Benjamin marauder velocity

Benjamin marauder velocity DEFAULT

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Years ago, we saw Crossman and Benjamin Marauder come along in the world of air guns.

Later, Crossman acquired Benjamin but the brand names remained intact, and day by day it got stronger.

giphy Benjamin Marauder Synthetic Stock (Gen 2) Review - The Perfect Mix of Superiority And Affordability

As Crossman predicted back then, it did nothing but add brand value to Crossman.

When it comes to air guns, Benjamin Marauder has always been the undisputed star on the market.

Be it power or accuracy, the Benjamin Marauder is going to take your shooting experience to another level.

For every shooter who takes their shooting seriously, Benjamin Marauder is an asset, a name you can trust.

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This silent PCP gun not only offers you the best performance but also goes easy on your pocket. 

The first generation of Benjamin Marauder (a.k.a Benjamin Marauder Gen 1) comes with a wooden stock.

(For an in-depth review of Benjamin Marauder Gen 1 wood stock, see this post)

This second generation Benjamin marauder is a treat to shooters of all levels with a much lighter synthetic stock.

Here, we are going to review the Benjamin Marauder Synthetic Stock Gen 2, going into detail on all its features.

So you can make a wise choice while choosing the best PCP air gun for the money.

Table of Contents

Benjamin Marauder Synthetic Stock – Guntype

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Thisis a pre-charged pneumatic gun.

Like all PCP guns, it works on compressed air.

Don’t get overwhelmed with all the technical terms by the way, you can read more about PCP guns in this post .

In pre-charged pneumatic (PCP) guns, the driving power of the system is the pressure generated from compressed air,

Which is a result of mechanical work inside the system.

There is no chemical reaction taking place inside a PCP gun .

So let’s settle this here — It’s all AIR!

Now that you know what drives the gun let me explain how to clear the air.

In any PCP gun you will see a tank.

That air tank acts as a reservoir.

There are numerous valves alongside the reservoir that keep the air compressed giving rise to air pressure.

When you pull the trigger a small opening is created for the air to escape the reservoir.

The compressed air escapes the system, firing the projectile.

Now I think the picture is clear for everyone.

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However, do not get confused with air pressure and performance of Benjamin marauder.

Crossman has made a very helpful and detailed manual for Marauder’s enthusiasts,

And it clearly states the highest pressure needed for your reservoir.

I advise you not to go above that because with extreme pressure, your air gun will jam.

It is always wise to follow the manual while using an air gun.

It will help you understand your weapon on a deeper level.

The tank in your marauder can be filled with a hand pump or air compressor.

While a hand pump is a cheaper option, it will tire you down to fill a 215cc air reservoir.

On the other hand, there are numerous air compressors available that will do your job efficiently and faster, leaving you to focus your energy on shooting.

I will discuss the compressor details in the accessories part.

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Benjamin Marauder is a multi-shot rifle. 

In PCP air guns, there is a piston that uses air to fire the pellets.

The motion caused by this piston works on the bolt and makes it fire,

And with the spring action in play, it comes back to the previous position to repeat the same action for the next shot.

In any single-shot gun you have to make that one shot count

Because otherwise you have to go through the hassle of loading the gun

And before you know it, the moment is gone.

Let’s be honest, there are times when you are not in your best form or when the timing is just off.

In cases like this you can always use another shot instantly.

Benjamin Marauder Synthetic Stock Gen 2 lets you fire up to 10 shots

And offers you auto indexing, which keeps you accurate with successive shots.

Benjamin Marauder is always celebrated for one feature which took it to another level altogether — The silent action.

A Marauder is an extremely silent rifle which is why you seldom hear it.

The Gen 2 comes with a fully shrouded barrel which does its job of eliminating the noise perfectly,

Though with the higher caliber it could get comparatively louder.

(For more on things you should know about air rifle barrels before buying, see this post.)

So if you are doing pest control or some squirrel is messing with your garden, I suggest you take up a marauder

And deal with it silently without catching the attention of your neighbors.

(For more on the best air rifle for squirrels, see this post)

click for the lowest price

Another striking feature in a Marauder is the trigger.

I can vouch for this trigger being one of the safest available in the market.

This is a two-stage adjustable trigger that works for both accuracy and safety.

Benjamin Marauder brings you various caliber choices such as .177, .22 and .25.

All the features like speed, air pressure, accuracy and energy changes with caliber.

(For more on how to choose the right air gun caliber for your game, see this post.)

The choked barrel plays a great role in maintaining the accuracy, shaping the shot spread in the initial stages.

This is the basic anatomy of the Benjamin marauder synthetic stock gen 2 air rifle,

And this serves you better than any conventional spring piston gun, which takes a lot of effort to reload frequently.

Now I will give you a better insight on some very important parts of the air gun so you will know if its the right investment for you.

Stock

As the name suggests, this Benjamin marauder gen 2 model comes with a synthetic stock.

It is lighter than the gen 1 wooden stock.

Though it lacks the authenticity of the wooden stock, it has several advantages over the first one.

The synthetic stock comes with a powder coating of black for better weather resistance.

The metal parts have bluing on them as to not get affected by rust.

Honestly though, the synthetic stock does look less charming than the wooden one.

However, let us discuss the pros of having a synthetic stock.

Firstly, they are lighter.

You can carry it easily here and there.

Get a sling loop and a sling with it and you are all set.

The synthetic is an entire pound lighter in weight than the wood stock.

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Secondly, you can use them in extreme weather conditions.

Wooden stocks are more easily affected by weather, and wood can be easily damaged in snow or rain,

Whereas this synthetic stock will serve you long term, and has an unquestionable durability.

Therefore, even if it lacks class, it is more practical to get a synthetic as a Marauder is not to be shown as a trophy but to improve your shooting experience.

(For more on the in-depth comparison between synthetic and wood stock, see this post.)

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Another feature that the marauder offers is an ambidextrous stock.

This is a huge upgrade compared to other products available on the market.

You reverse the bolt according to your dominant hand and you are good to go.

The stock has padding too so you can have a comfortable experience and a comb that can be adjusted vertically.

Sight

Sight is one of the most important deciding factors in shooting.

Your success depends on the right kind of scope and the perfect adjustment of it.

The proper alignment of the target, illumination and surveying equipment with range can do wonders for your shooting.

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In Benjamin marauder synthetic stock gen – 2, across the receiver top, there is an 11 mm dovetail rail.

It does not come with an open iron scope, which should be duly noted.

However, you get an open door to choose your favorite scope, which would also fit your purpose and pocket.

If you are getting a marauder which comes with Lothar Walther barrel, then it will feature a picatinny or weaver rail.

You can always switch between rails and scope with a simple use of an adapter.

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If it gets too confusing for you to get a perfect scope, you can always order a marauder premium package which will include all the necessary accessories.

This package offers the CenterPoint 4-16x40mm Rifle Scope.

(For more on how many types of air gun sights out there and which one is suitable for you, see this post.)

Although you can go for Lothar Walther barrel with picatinny or weaver rail, I don’t think you would need one

As there is very little recoil to handle with the Benjamin Marauder.

Velocity, accuracy and power

An air gun is chosen for its power and accuracy, and velocity is another important point you simply cannot avoid while judging an air gun.

The Benjamin Marauder comes with huge possibilities if properly tunes.

I am strictly prohibiting anyone who has no profound knowledge of air guns to tamper with the tuning.

You only change things when you know what you are doing.

There is a huge potential with simple tuning in this air gun, and proper tuning of things like hammer spring tension, striker ravel or valve output would open new doors for you.

However, note this carefully, you only change the tune with a proper chronograph, profound technical knowledge and ample time in hand.

For the rest of us,who are just beginning, we are fine to go with the preset tune which is also wonderful and keeps your performance level constant.

With tuning, you can get variable muzzle velocity but one thing you must remember is that you have to monitor the air pressure throughout the process,

Or you will end up with faulty muzzle velocity or air pressure that hampers your performance.

Here I am sharing my test results of Benjamin marauder .22 calibers with different pellets

So you get a thorough idea of its power and velocity along with accuracy.

I used seven different pellets of varying weights and got a range of velocities of 1041.83 FPS to 843.85 FPS.

The power range was from 23.38 ft-lbs to 33.43 ft-lbs.

WeightPelletsFirst shot muzzle velocityTenth shot muzzle velocityAverage muzzle velocityAverage muzzle energyAccuracy
9.70 grainGamo Raptor Platinum1057.94 FPS1030.82 FPS1041.83 FPS23.38 FT/LBSGOOD
10.03 grainH&N field target trophy green1038.43 FPS1007.23 FPS1024.70 FPS25.00 FT/LBSPOOR (vertical stringing)
11.90 grainRWS hobby994.08 FPS963.31 FPS980.30 FPS25.40 FT/LBSGOOD
14.30 grainCrossman premier HP950.15 FPS922.70 FPS935.83 FPS27.81 FT/LBSGOOD
14.35 grainJSB jumbo Exact953.59 FPS929.36 FPS941.61 FPS28.26 FT/LBSBEST OF THE TESTED
14.66 grainH&N field target trophy954.80 FPS927.51 FPS941.99 FPS28.89 FT/LBSGOOD
21.14 grainH&N barracuda match848.93 FPS836.84 FPS843.85 FPS33.43 FT/LBSGOOD

The accuracy of a Benjamin marauder is unbeatable in any given condition.

However, the range changes with change in caliber.

The accuracy a Marauder offers is much higher than the price range in which it comes.

For the same or the nearest higher accuracy, the price just doubles or even triples.

For .25 you can go up to 50-100 yards, but while the caliber decreases you have to map your range with it too.

.22 is good to go up to 30 yards and small game like rabbits or squirrels are good to go.

.177 is suitable for paper shots.

(For more on the differences between .177 & .22 and which jobs they do best, see this post.)

.25 is so far the most suitable one for gaming and with proper tuning and informed settings, it could get you some coyotes or other big game.

Rick Eutsler from AirgunWeb took an in-depth look at the Benjamin Marauder Synthetic stoc here:

Trigger

Can we just all take a second to grasp the fact that Benjamin marauder not only offers us a metal trigger, but they are also adjustable!?

Oh, don’t let me stop there — they also have two-stage adjustable triggers.

When we think about positive let off or crisp functioning of any air gun the topic comes to an end at trigger feature.

What kind of trigger your device has can make a huge difference in your shooting, and you will feel this once you get to the field and start the actual job.

A two-stage trigger offers you two basic facilities that any sconventional trigger fails to deliver.

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The first one is accuracy.

Two-stage triggers do wonders when it comes to accurate shots.

Their working principle is the key here.

There are two pulls required from your end.

If you do not make the target in the first pull then you can pause, make the adjustment and then go for the second pull.

BAM! That’s your target.

The minimal effort required for this inter-stage adjustment makes a huge difference in shooting experience and success.

The second advantage is safety.

When it comes to shooting, we have to be very careful all the time of accidental or undesired discharge.

A two-stage trigger lowers the possibility of such incidents because of its heavier pull weights.

It weighs around 3 lbs and unless you pull it with intention, there are very few chances of accidental fire.

The Benjamin Marauder also features a safety which is in direct contact with the trigger.

Moving on to trigger settings, you can change the pull weight or trigger blade position according to your needs.

The Crossman manual is very detailed and user friendly with all the information one might need to make any change in any settings.

However, just like tuning I would suggest you do it only with adequate knowledge.

A trigger is something you should not mess with in any firearms.

It could lead to several undesired incidents and the worst you can expect is an accident.

Do not go hard on your trigger.

Change one thing or two at a time, understand what you did, give your system time and let it work on it,

And then you understand how it changes the output.

Throughout the process keep a sharp eye on the safety. Care will always reward you

Cocking and loading

Cocking and loading is a simplified process in a marauder.

Like all other air guns or rifles, you start with pulling the bolt back, slide the magazines like a pro

And push it back to its initial position, and you are good to go.

Now while talking about magazines, I will mention some practical issues which may seem funny but in real life makes a lot of difference.

First, what you should know is the size of magazines and pellets that you will use in your marauder synthetic stock gen 2.

They are comparatively on the smaller side, and you may end up losing a lot if not careful throughout the process.

If you have bigger hands, it could add to your troubles.

However, this is nothing that could stop you from loading a marauder, just don’t end up wasting too many pellets.

They know circular magazines loading could be tricky, so they have an elevated aluminum breech to make it less messy.

The bolt is reversible, which could be a new feature to you and may take some time, but you will get used to it before long.

Loudness

This heading should be quietness, because a marauder does not deal with loud business.

The barrel of Benjamin marauder synthetic stock gen 2 is fully choked, and this makes this gun awfully quiet.

In the updated version, they have used an in built de-pinger which eliminates the sharp ping of a shot, and instead you hear a dull thud.

The USP of a Marauder should be quietness and accuracy.

People claim to kill squirrels with it without scaring off anything else from the lawn.

Shooting Ability

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At the beginning of the Benjamin marauder synthetic stock gen 2 reviews I mentioned it is a 10-shots-gun with auto indexing.

Anyone finding this alien? Fear not, they have single shot trays available too,

Though you will never need one once you start using the multi shot feature and realize how great it actually is.

Another shooting feature present in the Marauder which steals the show is how it shows the number of remaining pellets in the magazine.

This not only helps you in planning your shots but also keeps you safe from double feeding and jamming.

Double feed control is often absent in air guns, and this particular feature comes in handy for avoiding jamming.

Double feeding jams the air gun, and clearing this stoppage is a different job altogether.

Therefore, it is better you keep a track of your shooting.

The above feature also helps to eliminate the accidental double discharge.

You can use the cheek weld for higher accuracy, and this is possible because of the adjustable stock comb height which I mentioned earlier.

This also helps in mounting scopes.

The ambidextrous stock helps both right and left-handed shooters and goes perfectly with a wide range of accessories available in the market.

Durability

Benjamin marauder is well known for its durability.

This is a gun that will cost you little to keep in good shape.

A marauder, with just a little care, will keep you busy in hunting for a really long time.

Benjamin marauder synthetic stock gen 2 rifle is not high maintenance and could go for ages because of its sturdy parts and high-quality building blocks.

Accessories

A Benjamin marauder is a pretty neat gun and does not demand a lot of side parts.

However, being a PCP gun, one thing that you cannot ignore is an air pump.

The air tank is its powerhouse and for compressed air pressure, you have fill the tank with air.

Now, there are two ways of filling the reservoir.

One with a hand pump, second with a compressor or scuba tank.

If you are not sure, I urge you to read this awesome guide on how to choose the right air source for your PCP air rifle.

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The first one is more conventional though it could be very tiring.

The reservoir is 215cc, and the air ranges over around 2000-3000 psi. which is a modest amount in terms of air pressure.

It also depends on your physical ability.

You can always use a scuba tank or air compressor to do the job for you so you can save your energy for shooting.

Numerous air compressors are available on the market.

Some of the most popular air compressors are venturi compressor 4500 psi, Benjamin traveler 4500 psi compressor, air venture nomad portable air compressor etc.

But you can also go for marauder value pack if you want something cheaper.

In case of hand pumps, air venturi g6,  g7 or Hill MK4 could be your options.

Another accessory which you will need is a scope as it does not come with one.

Scopes are an important deciding factor, and you can use your preferred one that goes with the factory dovetail rail.

You can go with Hawke sports optics, UTG-3 9*32 1” bugbuster scope, Winchester products etc.

giphy Benjamin Marauder Synthetic Stock (Gen 2) Review - The Perfect Mix of Superiority And Affordability

Maintenance

As I have already mentioned, the Benjamin marauder synthetic stock gen 2 is not a high-maintenance air gun.

There is very little you have to do to keep a marauder functioning.

After some hundreds pellets, clean the magazines and cock so there is no lead build up.

You can use any good air rifle lube, and it will be as good as new.

For other metallic parts,keep a microfiber handy and wipe the gun off occasionally for it to have a shiny and print free look.

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Pros and Cons

Price

A marauder offers you the best price while giving the performance of an elite rifle.

When we talk about air rifles, we talk about a price range that starts from $100 to several thousand.

A Benjamin combines superiority with affordability.

I am not saying you can’t get a better air rifle, but I’ll bet you can’t get one in this price range.

Anything better with same features will cost you at least twice if not thrice this price.

click for the lowest price

You can get a marauder for between $500-550 depending on your choice of barrel and stock.

Accessories like compressors or scopes will cost you another $200-250 but can go up if you can afford higher-quality materials.

Specifications

So far, I have discussed all the feature of this marauder upgraded model in detail,

But in case you are in a hurry and have to take all in one go then here are the specifications that you will get in this air gun.

  1. Benjamin marauder synthetic stock gen 2 air gun weighs around 7.3 lbs, which is almost 1lb less than the wood stock which is about 8.2lbs.
  2. It is about 42.8” long, which is not what is recorded in the manual.
  3. This is a PCP gun with a reservoir of 215 cc.
  4. It uses compressed air pressure, which is around 2000-3000 psi for the best performance.
  5. The velocities can vary depending on the air gun setting, which, in other words, mean this rifle offers you variable velocities.
  6. Benjamin marauder has an inbuilt pressure gauge to keep track of the pressure inside the air tank.
  7. There is a quick disconnect arrangement on the air tank so while filling the tank you can use one female quick disconnect and finish the job easily.
  8. Internal shroud mechanism makes it one of the quietest air guns available in the market.
  9. The choked barrel is all about accuracy.
  10. Aluminum breech is elevated so as to load circular magazines easily.
  11. This model of Benjamin offers 10 repetitive shots with an auto indexing feature.
  12. It comes with two-stage adjustable metal trigger for better safety and accuracy.
  13. The stock is ambidextrous and suitable for both left and right hand shooters.
  14. The bolt is reversible, which makes it open to all kinds of accessories available in the market and can be used by both left and right handed shooters easily.
  15. You get a magazine along with swivel sling stud with Benjamin marauder synthetic stock gen 2 air gun.

Customer review

Customers from all over the world love Benjamin marauder synthetic stock gen 2 air guns and there has been little complaint against it.

The accuracy, durability and versatility along with affordability has so far secured the greatest fan base among the shooters.

Critics and testers that are trusted for their unbiased opinion on air guns worldwide have got nothing negative about this marauder.

Conclusion

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Overall, the Benjamin marauder synthetic stock gen 2 is one of a kind for all its great features, and it will be worth your money. 

I hope you got a clear picture of Benjamin marauder synthetic stock gen 2 and by now are prepared to invest in your ammunition wisely.

Cheers to accuracy, power, class and Benjamin marauder!

 

Sean Campbell

https://airgunmaniac.com/about-autor-sean-campbell/

Sean Campbell’s love for hunting and outdoor life is credited to his dad who constantly thrilled him with exciting cowboy stories. His current chief commitment involves guiding aspiring gun handlers on firearm safety and shooting tactics at the NRA education and training department. When not with students, expect to find him either at his gunsmithing workshop, in the woods hunting, on the lake fishing, on nature photoshoots, or with his wife and kid in Maverick, Texas.

Sours: https://airgunmaniac.com/benjamin-marauder-synthetic-stock-gen-2-review/

Tuning a Marauder- What to adjust and where to start

Found this while researching how to “tune my Marauder”. As he states it is not a “how to” but rather a what are the components and a starting place. Thought this might be of help to other Marauder shooters. This was written in 2009 most likely for the Gen 1 but will apply to the Gen. 2 model. He has several other posts which go into the start place if you want more information. I thought it was stated concisely and easy to understand. Hope this helps others  :

ShadowShot:

Hello all,

I am sure there will come a time when some one will ask, (like I am), 
what is the factory setting for this part of the rifle, or that part?
I have not tried to call or email the factory yet on this. I am not to sure they
 would give out the information but I don’t see why they wouldn’t.
I thought it would be a good idea to collect what factory settings
we have found or collected, and pool the information here for reference.

I know, for example, the commonly found factory setting for the hammer stroke length,
or the “Hammer Throw” in the .22 cal rifles are maxed out at full throw length. 
IE: (The 1/8 Allen screw adjustment backed counter clockwise all the way out.). 
This controlls how far the hammer travels before striking the valve.

This collected information is not intend to be a, “how to”, for tuning your Marauder.
It is only here for restoring your rifle to the original factory set points. You may have lost
 yours during tuning or never wrote them down when you started.

There are two basic areas of adjustments for the factory 2500psi Fill.
1. Velocity, which is controlled by three areas of adjustment.
 (a) Hammer spring preload
 (b) Hammer Stroke Length
 (C) Valve Metering Screw.

2. The trigger assembly.
  (a) Trigger Pull
  (b) Trigger Position
  (c) Trigger Stages

If you would, please be very specific when you post.
I know many things can be said here of safety, how to adjust, what adjustments you have made
and so on. If you will , please post something like, “My .22 or .177 rifle came with the Hammer Stroke Length
turned 2 turns in from it max out position”. We may find that the settings are the same for both rifles. 

As the information comes in, I will try to keep up with it here
in this main post. Once we have completed collecting the data,
Gene might find the information of some library value.

Thanks for your input and help.
ShadowShot

Here is how you start:

Crosman Marauder Tuning Procedure

Tuning your Benjamin PCP with the use of the Hammer Spring Tension Adjuster and Hammer Stroke Adjuster
by Ray and Hans Apelles ~ The “A” Team
Caution: All testing should be done with muzzle pointed in a safe direction and into a safe backstop!!!!
Principles
Preparation:
There are many different ways a PCP may be tuned/adjusted. With the adjustable Hammer Spring Tension and
Adjustable Stroke you have virtually all you need to tune a PCP to your liking.
This Document will give you a brief introduction into adjusting and from there you will need to experiment to get the
performance you desire.
A certain amount of force is required by the hammer to open a valve to achieve a particular velocity with a given pellet.
This can be applied in a variety of ways. At one extreme the hammer can be moved a long distance (stroke) with a low
spring tension. At the other extreme the hammer can be moved a very short distance (stroke) with a very high spring
tension. And there is everything in between. Each method yields a different firing characteristic. It is up to the end user
to decide how he would like the gun adjusted to suit his needs and firing characteristic desires.
A long stroke, low spring pressure setting will give a very light cocking effort and long spring life. As the hammer opens
the valve, the pressure from the reservoir combined with the valve return spring pressure will close the valve. With a light
spring pressure the hammer is likely to be thrown back far enough (and off of the valve stem) that the hammer spring then
gets re-tensioned and the hammer gets thrown forward to hit the valve stem again and expel more air. This can be heard
and sounds as though the gun is burping out air for as many as 3 or 4 burps per shot.
A short stroke, high spring pressure setting will yield a heavy cocking effort and possibly shorter hammer spring life. As
the hammer opens the valve, the pressure from the reservoir combined with the valve return spring pressure will close the
valve. With a heavy hammer spring tension the hammer can’t get thrown back so far (or possibly not even off the valve
stem) as to tighten up the hammer spring and throw the hammer back onto the valve to burp out more air. There is the
small possibility that the valve may also close slower, allowing more air to escape, because of the added hammer spring
tension keeping the hammer against the valve. This method of tuning usually yields a shorter sharper crack at discharge.
This method yields little to no Hammer Bounce.
The best balance between the long stroke low spring tension and the short stroke high spring tension is what is desired.
The following guide will help you achieve a setting that will give you the desired velocity. It will be up to the user to
achieve the balance they desire for an optimal setting. An optimal setting will give the highest efficiency yielding little to
no hammer bounce, reasonable cocking effort and good shot consistency.
It would be a good learning experience to try each method so as to learn the characteristics of each in your particular gun.
Start with the long stroke low hammer tension (which is very similar to the factory setting) and then try the short stroke
high hammer tension method. After learning each you can then find a balance between the two. When finding the
balance, if you can hear any air burp then you should adjust more to a shorter stroke higher hammer tension. You are
looking for that fine balance which can only come from experience. At the end of this document you will find a method for
determining charge pressure and shot count. It is advisable to do each for the 2 different methods so you can see the
difference in shot count and velocity curve which will give you an idea of the efficiency you have achieved in each.
After finding your setting for each method, you can determine that setting by inserting the adjustment wrenches and
counting how many turns to get back to the end stops. An example would be 7 turns in hammer spring, 5 turns in stroke
yields 850 fps with xyz pellet with a 2000 psi charge for 25 shots. Using this method you can always get back to a
particular setting while you are trying different settings.
A) Hammer Stroke Adjustment (HSA): With the gun assembled, adjust the hammer stroke to the longest stroke position.
This is done by inserting the Hammer Stroke Adjustment (HSA) allen wrench through the Hammer Spring Tension
Adjuster (HSTA), through the spring, into the hammer and catching the Hammer Striker. Then turn counter clockwise until
the Striker is to the fully retracted position. This is the start position for your adjustments.
B) Hammer Spring Tension Adjustment (HSTA): With the gun assembled, adjust the Hammer Spring Tension to the least
tension position. This is done by inserting the Hammer Spring Tension Adjustment (HTA) allen wrench into the end plug
and catching the HSTA and turning counter clockwise until the Hammer Spring Tensioner is to the fully retracted position.
This is the start position for your adjustments.
Revised 6/1/2009
C) If it is possible, make an identical replacement of the transfer port but change the ID to .110″ or smaller. It is rare that a
PCP needs a transfer port larger than .110 to achieve 20 ftlbs. If you are trying to significantly reduce the power of (as an
example) the Discovery then you may go smaller yet. As an example, one that we tuned used a .105″ transfer port to get
just below 20 ftlbs. The transfer port in the Discovery is large because it is designed to work with CO2 as well and needs
the larger size for the lower pressure CO2 gas. A Transfer Port that is large enough to give you the velocity you desire
but no more will give you a flatter velocity curve. It is not mandatory that you replace the transfer port but it is beneficial.
In the case of the Marauder, turn the transfer port adjustment all the way in (clockwise) and then turn it out 4 revolutions
(counter clockwise). This is the starting point for the adjustable transfer port which is now all the way open.
1) Set up a chronograph station with the assembled gun on sand bags in front of the chronograph so your readings will be
consistent. The Muzzle should be at least 18 inches from the first sensor to prevent incorrect readings.
2) Have initial adjustments of the PCP set to A, B and C above.
Note: you will initially be tuning for a particular charge range so you will need to charge the gun to the same pressure
each time and every 5 shots or so to maintain pressure during setting. Changes in charge pressure will give you changes
in readings that will confuse the issue. Once the settings are complete then you will determine correct charge pressure
and number of shots for that pressure.
3) Charge gun to a pressure that will be a little above the middle of your desired charge range. Example: If you are
looking to charge to 2000 psi and shoot to 1000 psi then charge to 1600 psi for testing.
4) Turn in (clockwise) the hammer tension until you feel tension on the hammer spring and then turn 1 more revolution in.
5) Chronograph a shot to see where your velocity is.
6) Increase hammer tension 1 turn.
7) Repeat 5 and 6 until your desired velocity is reached.
8 Shorten your hammer stroke 1/2 turn.
9) Chronograph a shot to see where your velocity is.
10) If your velocity stayed the same go to 8. If your velocity decreased go to 6.
11) Keep making adjustments (remember to charge every 5 shots) and chronographing until you are satisfied with the feel
of the shot cycle. This is learned through experience and can not be adequately explained.
4) Cock Hammer.
5) Turn in (clockwise) the hammer tension until you reach full coil bind and can not turn the hammer tension in any further
(gun may fire during this adjustment). Fire gun. Cock the hammer again. If it will not cock then turn hammer tension out
1/2 turn. Cock gun again. Repeat until gun will cock reliably.
6) Turn hammer tension out 2 to 3 turns.
7) Chronograph a shot to see where your velocity is.
8 Shorten your hammer stroke 1/2 turn.
9) Repeat 7 and 8 until your desired velocity is reached.
You may see that as the stroke is decreased the velocity will actually increase. This is a common phenomenon as a more
efficient setting is reached.
Adjustments:
Method 1
Method 2
Revised 6/1/2009
10) Keep making adjustments (remember to charge every 5 shots) and chronographing until you are satisfied with the feel
of the shot cycle and velocity. This is learned through experience and can not be adequately explained.
If your PCP has an Adjustable Transfer Port (as does the Marauder) then you can fine tune the velocity.
1) Turn the adjustment screw in ¼ turn at a time and chronograph a shot.
2) Make another ¼ turn adjustment and chronograph another shot.
Repeat the process until you reach your desired velocity.
During this process you may notice that the PCP gets quieter and blows less air but the velocity doesn’t change much.
This is common as you are achieving a more efficient setting. Your shot count will increase as well.
Another benefit of a PCP with an adjustable transfer port is that you can dramatically flatten a velocity curve by restricting
the transfer port and increasing the energy used to open the valve stem.
You will increase the usable charge pressure band and increase shot count in the process.
You will have to experiment with the settings to achieve this type of balance.
It will not be explained in detail here. It is mentioned here so you can strive to achieve such a balance as you are gaining
experience with the other adjustments.
Fine Tuning Velocity with an Adjustable Transfer Port
Re

Found this while researching how to "tune my Marauder". As he states it is not a "how to" but rather a what are the components and a starting place. Thought this might be of help to other Marauder shooters. This was written in 2009 most likely for the Gen 1 but will apply to the Gen. 2 model. He has several other posts which go into the start place if you want more information. I thought it was stated concisely and easy to understand. Hope this helps others  :ShadowShot:Hello all,I am sure there will come a time when some one will ask, (like I am), what is the factory setting for this part of the rifle, or that part?I have not tried to call or email the factory yet on this. I am not to sure they would give out the information but I don't see why they wouldn't.I thought it would be a good idea to collect what factory settingswe have found or collected, and pool the information here for reference.I know, for example, the commonly found factory setting for the hammer stroke length,or the "Hammer Throw" in the .22 cal rifles are maxed out at full throw length. IE: (The 1/8 Allen screw adjustment backed counter clockwise all the way out.). This controlls how far the hammer travels before striking the valve.This collected information is not intend to be a, "how to", for tuning your Marauder.It is only here for restoring your rifle to the original factory set points. You may have lost yours during tuning or never wrote them down when you started.There are two basic areas of adjustments for the factory 2500psi Fill.1. Velocity, which is controlled by three areas of adjustment. (a) Hammer spring preload (b) Hammer Stroke Length (C) Valve Metering Screw.2. The trigger assembly.  (a) Trigger Pull  (b) Trigger Position  (c) Trigger StagesIf you would, please be very specific when you post.I know many things can be said here of safety, how to adjust, what adjustments you have madeand so on. If you will , please post something like, "My .22 or .177 rifle came with the Hammer Stroke Lengthturned 2 turns in from it max out position". We may find that the settings are the same for both rifles. As the information comes in, I will try to keep up with it herein this main post. Once we have completed collecting the data,Gene might find the information of some library value.Thanks for your input and help.ShadowShotHere is how you start:Crosman Marauder Tuning ProcedureTuning your Benjamin PCP with the use of the Hammer Spring Tension Adjuster and Hammer Stroke Adjusterby Ray and Hans Apelles ~ The “A” TeamCaution: All testing should be done with muzzle pointed in a safe direction and into a safe backstop!!!!PrinciplesPreparation:There are many different ways a PCP may be tuned/adjusted. With the adjustable Hammer Spring Tension andAdjustable Stroke you have virtually all you need to tune a PCP to your liking.This Document will give you a brief introduction into adjusting and from there you will need to experiment to get theperformance you desire.A certain amount of force is required by the hammer to open a valve to achieve a particular velocity with a given pellet.This can be applied in a variety of ways. At one extreme the hammer can be moved a long distance (stroke) with a lowspring tension. At the other extreme the hammer can be moved a very short distance (stroke) with a very high springtension. And there is everything in between. Each method yields a different firing characteristic. It is up to the end userto decide how he would like the gun adjusted to suit his needs and firing characteristic desires.A long stroke, low spring pressure setting will give a very light cocking effort and long spring life. As the hammer opensthe valve, the pressure from the reservoir combined with the valve return spring pressure will close the valve. With a lightspring pressure the hammer is likely to be thrown back far enough (and off of the valve stem) that the hammer spring thengets re-tensioned and the hammer gets thrown forward to hit the valve stem again and expel more air. This can be heardand sounds as though the gun is burping out air for as many as 3 or 4 burps per shot.A short stroke, high spring pressure setting will yield a heavy cocking effort and possibly shorter hammer spring life. Asthe hammer opens the valve, the pressure from the reservoir combined with the valve return spring pressure will close thevalve. With a heavy hammer spring tension the hammer can't get thrown back so far (or possibly not even off the valvestem) as to tighten up the hammer spring and throw the hammer back onto the valve to burp out more air. There is thesmall possibility that the valve may also close slower, allowing more air to escape, because of the added hammer springtension keeping the hammer against the valve. This method of tuning usually yields a shorter sharper crack at discharge.This method yields little to no Hammer Bounce.The best balance between the long stroke low spring tension and the short stroke high spring tension is what is desired.The following guide will help you achieve a setting that will give you the desired velocity. It will be up to the user toachieve the balance they desire for an optimal setting. An optimal setting will give the highest efficiency yielding little tono hammer bounce, reasonable cocking effort and good shot consistency.It would be a good learning experience to try each method so as to learn the characteristics of each in your particular gun.Start with the long stroke low hammer tension (which is very similar to the factory setting) and then try the short strokehigh hammer tension method. After learning each you can then find a balance between the two. When finding thebalance, if you can hear any air burp then you should adjust more to a shorter stroke higher hammer tension. You arelooking for that fine balance which can only come from experience. At the end of this document you will find a method fordetermining charge pressure and shot count. It is advisable to do each for the 2 different methods so you can see thedifference in shot count and velocity curve which will give you an idea of the efficiency you have achieved in each.After finding your setting for each method, you can determine that setting by inserting the adjustment wrenches andcounting how many turns to get back to the end stops. An example would be 7 turns in hammer spring, 5 turns in strokeyields 850 fps with xyz pellet with a 2000 psi charge for 25 shots. Using this method you can always get back to aparticular setting while you are trying different settings.A) Hammer Stroke Adjustment (HSA): With the gun assembled, adjust the hammer stroke to the longest stroke position.This is done by inserting the Hammer Stroke Adjustment (HSA) allen wrench through the Hammer Spring TensionAdjuster (HSTA), through the spring, into the hammer and catching the Hammer Striker. Then turn counter clockwise untilthe Striker is to the fully retracted position. This is the start position for your adjustments.B) Hammer Spring Tension Adjustment (HSTA): With the gun assembled, adjust the Hammer Spring Tension to the leasttension position. This is done by inserting the Hammer Spring Tension Adjustment (HTA) allen wrench into the end plugand catching the HSTA and turning counter clockwise until the Hammer Spring Tensioner is to the fully retracted position.This is the start position for your adjustments.Revised 6/1/2009C) If it is possible, make an identical replacement of the transfer port but change the ID to .110" or smaller. It is rare that aPCP needs a transfer port larger than .110 to achieve 20 ftlbs. If you are trying to significantly reduce the power of (as anexample) the Discovery then you may go smaller yet. As an example, one that we tuned used a .105" transfer port to getjust below 20 ftlbs. The transfer port in the Discovery is large because it is designed to work with CO2 as well and needsthe larger size for the lower pressure CO2 gas. A Transfer Port that is large enough to give you the velocity you desirebut no more will give you a flatter velocity curve. It is not mandatory that you replace the transfer port but it is beneficial.In the case of the Marauder, turn the transfer port adjustment all the way in (clockwise) and then turn it out 4 revolutions(counter clockwise). This is the starting point for the adjustable transfer port which is now all the way open.1) Set up a chronograph station with the assembled gun on sand bags in front of the chronograph so your readings will beconsistent. The Muzzle should be at least 18 inches from the first sensor to prevent incorrect readings.2) Have initial adjustments of the PCP set to A, B and C above.Note: you will initially be tuning for a particular charge range so you will need to charge the gun to the same pressureeach time and every 5 shots or so to maintain pressure during setting. Changes in charge pressure will give you changesin readings that will confuse the issue. Once the settings are complete then you will determine correct charge pressureand number of shots for that pressure.3) Charge gun to a pressure that will be a little above the middle of your desired charge range. Example: If you arelooking to charge to 2000 psi and shoot to 1000 psi then charge to 1600 psi for testing.4) Turn in (clockwise) the hammer tension until you feel tension on the hammer spring and then turn 1 more revolution in.5) Chronograph a shot to see where your velocity is.6) Increase hammer tension 1 turn.7) Repeat 5 and 6 until your desired velocity is reached.8 Shorten your hammer stroke 1/2 turn.9) Chronograph a shot to see where your velocity is.10) If your velocity stayed the same go to 8. If your velocity decreased go to 6.11) Keep making adjustments (remember to charge every 5 shots) and chronographing until you are satisfied with the feelof the shot cycle. This is learned through experience and can not be adequately explained.4) Cock Hammer.5) Turn in (clockwise) the hammer tension until you reach full coil bind and can not turn the hammer tension in any further(gun may fire during this adjustment). Fire gun. Cock the hammer again. If it will not cock then turn hammer tension out1/2 turn. Cock gun again. Repeat until gun will cock reliably.6) Turn hammer tension out 2 to 3 turns.7) Chronograph a shot to see where your velocity is.8 Shorten your hammer stroke 1/2 turn.9) Repeat 7 and 8 until your desired velocity is reached.You may see that as the stroke is decreased the velocity will actually increase. This is a common phenomenon as a moreefficient setting is reached.Adjustments:Method 1Method 2Revised 6/1/200910) Keep making adjustments (remember to charge every 5 shots) and chronographing until you are satisfied with the feelof the shot cycle and velocity. This is learned through experience and can not be adequately explained.If your PCP has an Adjustable Transfer Port (as does the Marauder) then you can fine tune the velocity.1) Turn the adjustment screw in ¼ turn at a time and chronograph a shot.2) Make another ¼ turn adjustment and chronograph another shot.Repeat the process until you reach your desired velocity.During this process you may notice that the PCP gets quieter and blows less air but the velocity doesn’t change much.This is common as you are achieving a more efficient setting. Your shot count will increase as well.Another benefit of a PCP with an adjustable transfer port is that you can dramatically flatten a velocity curve by restrictingthe transfer port and increasing the energy used to open the valve stem.You will increase the usable charge pressure band and increase shot count in the process.You will have to experiment with the settings to achieve this type of balance.It will not be explained in detail here. It is mentioned here so you can strive to achieve such a balance as you are gainingexperience with the other adjustments.Fine Tuning Velocity with an Adjustable Transfer PortRe

Sours: https://www.airgunnation.com/topic/tuning-a-marauder-what-to-adjust-and-where-to-start/
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Airgun Review: The Benjamin Marauder PCP Air Rifle

I started shooting adult oriented spring-piston air rifles while living overseas, and just before returning home, I was introduced to the new precharged pneumatic (PCP) airguns. My first PCP rifles were from Britain and were beautifully made and extremely accurate. However, the expense of imported airguns presented a barrier to entry for many US shooters. At that time, for the cost of a PCP air rifle, the American shooter could buy a couple .22 rimfire rifles and a few bricks of ammo (those were the days). Combined with a general lack of awareness within the domestic shooting community, this dampened the initial growth of the PCP airgun market. If only an airgun like the Benjamin Marauder air rifle existed then.

Before we discuss why the Benjamin Marauder is so effective, let’s review how it came to be. When Crosman (the parent company of Benjamin) threw their hat in the PCP air rifle ring with the Discovery, I was given the opportunity to do some preliminary testing. They quickly improved on the initial design and a few months after the introduction of the Discovery, I was contacted by Crosman to evaluate their follow-up to the Discovery. This prototype air rifle had a multi-shot magazine, was fully shrouded, had a two-stage adjustable trigger, was more powerful, provided a high shot count, and would be available in several calibers. This new gun was to be called the Marauder, and the design was feature-rich, offered excellent performance, and was priced right for the US market.

The Marauder ticked the boxes for what I want in a hunting rifle, then and now, and I’ve used this gun a lot over the years. I’ve hunted with it across the US, and I’ve carried the Marauder as my small game gun on multiple trips to South Africa. To make this great air gun even better, Crosman has continued to improve the Benjamin Marauder platform.

Benjamin Marauder air rifle

Benjamin Marauder .25 Caliber PCP Air Rifle

An extremely quiet air rifle that shoots .25 caliber pellets at 800 fps with excellent accuracy. Crossman

Check Price

Benjamin Marauder Specifications

  • MSRP: $599 for the .25 caliber with synthetic stock and crosman barrel
  • Bolt action that is reversible for left and right hand shooters
  • 8-shot repeater with auto-indexing feature (10 shot .22 and .177)
  • Maximum fill pressure: 300 psi
  • Operating pressure: 2,000 to 3,000 psi 
  • Internal shroud with baffles for quiet shooting
  • Choked barrel for superior accuracy 
  • 2-stage adjustable match trigger with metal trigger blade 
  • Aluminum breech with 11 mm dovetail
  • Optional rifled Lothar Walther barrels include a Weaver/Picatinny rail 
  • Ambidextrous Turkish Walnut stock with adjustable comb (Synthetic stock available)
  • Built-in air pressure gauge 
  • 215cc air reservoir with a male quick-disconnect Foster fitting
  • 42.8″ long 
  • 8.2 lbs (synthetic stock is 7.3 lbs) 
  • Includes one magazine and sling swivel studs
Collection of Marauder airguns

Benjamin Marauder Overview

The Marauder is a large frame air rifle, but it is well balanced with a hardwood stock that has an adjustable and ambidextrous raised comb, a nicely shaped pistol grip, and machine cut checkering on the grip and forestock. The result is a rifle with excellent ergonomics that provide a stable shooting platform.

The standard Benjamin Marauder package comes in .177, .22, and .25 caliber. You can also choose from two stock options, either the hardwood stock described above, or a synthetic stock which aside from weight (about ½ lb lighter), has the same dimensions and design elements. The Marauder is cycled with a bolt action positioned at the rear of the receiver. The bolt can be set up for either a left or right hand shooter. The cocking action is short and smooth, and when cycled it auto-indexes the rotary magazine. It is easy to cock the rifle without coming off the shoulder, allowing quick follow-up shots. The .25 caliber rifle has an eight-shot capacity, is easy to load, and is a proven design.

The two-stage adjustable trigger is set up at about 3 pounds from the factory. The trigger is crisp with a positive let-off and negligible overtravel. Trigger adjustments are achieved using a set screw for trigger pull weight, trigger blade position, and changes to the first and second stages. The safety is positioned directly in front of the trigger and is easily accessible without a lot of extraneous hand movement. The Marauder utilizes a rifled barrel with a choked muzzle, producing excellent accuracy. It is equipped with an integrated barrel shroud resulting in a very quiet airgun! It’s the quietest air rifle I’ve heard in its power class. If the main reason you are buying an air rifle is backyard target practice or small game hunting in a noise-sensitive environment, this gun should be on your radar.

Onboard air storage is provided with an under-barrel cylinder with a 215 cc capacity and a pressure rating of 3000 psi. The cylinder is filled from an external source using a standard quick fill connector. A pressure gauge is mounted a couple inches in front of the trigger guard and allows air pressure to be monitored as the gun is shot.

shooting target for airguns

Benjamin Marauder Accuracy and Velocity Test

For this review, I took a stock Benjamin air rifle to the range and put it through its paces. Specifically, my objectives were to run shot strings over the chronograph, shoot 45-yard groups, and try out a few different pellets. The Marauder’s onboard adjustments allow the preferred balance between power, consistency, and shot count.

How powerful is the Benjamin Marauder? At the factory presets the rifle generated 27 shots with a peak velocity of 835 fps, a low of 680 fps, and an average of 787 fps. If we look at the first 15 shots, the average velocity is 822 fps with a 25.39-grain pellet or a calculated muzzle energy of 38 foot pounds. From an airgun perspective, this is a respectable energy output, but as mentioned, the gun can be optimized depending on the shooter’s requirements.

Accuracy at 45 yards was very good, the best results being obtained with JSB Exact 25.39 grain round nose pellets. Ten shot groups could consistently be covered with a quarter, and I think it is fair to say that this is solid performance in a small game gun. When shooting groups at 10 yard increments between 30-75 yards, I was able to keep two shots almost on top of one another until reaching 75 yards where they opened up but still remained within the kill zone of a rabbit.

Though baseline performance is good, it is possible to further improve power, accuracy, and air management by adjusting the hammer (tension and stroke) and optimizing the airflow through the transfer port for a specific pellet. These adjustments are a parallel to handloading in the firearms world. However, I would suggest you read up on this and buy a chronograph before you start tweaking the rifle. 

In my range session, I shot four different pellets, the JSB Exacts, the Benjamin Discovery, the H&N Baracuda, and the JSB Hades. The JSB Exacts gave the best results, and an occasional flyer occurred with the H&N’s, but all of these pellets would be good for small game hunting. Air rifles can have pellet preferences, so to get the best possible results, the shooter needs to try different projectiles.

shooter loading marauder magazine

Where the Marauder Shines

I find the Benjamin Marauder to be an excellent hunting air rifle. It carries well, comes quickly to the shoulder, points naturally, and allows a consistent and comfortable sight alignment. As mentioned, my preference is the .25 caliber which hits small game like a sledgehammer. I have complete confidence with this rifle at 50 yards and have frequently reached out farther when shooting prairie dogs from a rested position. The bolt action and magazine cycles smoothly and reliably, which enables fast follow-up shots when needed. I can be rough on my guns and gear in the field. This rifle has stood up to the hard knocks and always performed for me.

Where is the Benjamin Marauder lacking?

Of course, very few things in this world are perfect, and as good as the Marauder is there are places it could be improved. First, even though the rifle is not oppressively heavy, it is pretty stout, hitting 10 to 11 pounds with a scope. The rifle does not have a mechanism to prevent double loading a pellet. It is possible to cock the rifle in the heat of the moment, only to realize the gun already had a pellet loaded and a second pellet has been jammed in behind it. This is not a huge problem but can require some time and effort to correct.

And finally, the Marauder is not regulated, so shot-to-shot consistency is good but not great. The solution is to find a setting where there is a balance between shot count, power, and accuracy. This allows consistency to be optimized for all but the most precision oriented competitive applications. There are also after market regulators for those that want to follow this path with their Marauder.

shooter removing dust cap on Marauder airgun

Tip: How to Fill a PCP Air Rifle

There are several options available to supply your Marauder with air: the least expensive (by far) is a 3 stage hand pump, but eat your Wheaties before using this bad boy. It resembles a bicycle pump on steroids, and you’ll have to put your back into a couple hundred pumps to charge the gun from empty. The next option is a high pressure air tank, but you will need an air source such as a paintball or dive shop. My favorite option is an air compressor. The good news for airgunners is that the price of personal compressors is becoming quite affordable. Crosman offers a full size compressor and a travel compressor, which makes filling your rifles fast and easy.

Final thoughts on the Marauder

I really liked the Benjamin Marauder from the first time I shot it. As stated, it is a larger gun, but I find that it balances on the shoulder and fits me well. With the adjustable stock, I think most shooters will be able to configure the rifle to fit them. The performance is solid, with excellent accuracy and power. The Marauder, especially the .25 caliber, will do the job on any small game you want to pursue. The fact that you can adjust the power, and the gun is so inherently quiet, means it can be used in noise-sensitive shooting and hunting scenarios. In my experience, the rifle and the magazines are rugged and reliable. And finally, the breadth of aftermarket components and the number of possible modifications makes this a great platform for a wide range of applications and shooting disciplines. I do think that if you are looking for a mid-priced hunting rifle, the Marauder deserves a spot on your shortlist.

Sours: https://www.outdoorlife.com/gear/benjamin-marauder-review/
Marauder Tune Information Revised

.25 marauder velocity

just got a marauder gen-2 .25 cal. I started to monkey with the tune settings. I left the hammer stroke stock. an messed with the hammer spring tension, and the air valve. this question is to all the experienced fellas that know what way is up….I am a total noob with this hobby.

1-812
2-817
3-820
4-814
5-816
6-815
7-818
8-812
9-812
10-808
11-808
12-800
13-794
14-788
15-783
16-776

the start psi is 28,000 as my fill bottle has a regulator and its all it does. and the end psi is 2,000. i am trying to figure out if this is acceptable or not ?. any input or advice is greatly welcomed. thanks, peace, randy.

just got a marauder gen-2 .25 cal. I started to monkey with the tune settings. I left the hammer stroke stock. an messed with the hammer spring tension, and the air valve. this question is to all the experienced fellas that know what way is up....I am a total noob with this hobby. 1-812 2-817 3-820 4-814 5-816 6-815 7-818 8-812 9-812 10-808 11-808 12-800 13-794 14-788 15-783 16-776 the start psi is 28,000 as my fill bottle has a regulator and its all it does. and the end psi is 2,000. i am trying to figure out if this is acceptable or not ?. any input or advice is greatly welcomed. thanks, peace, randy.

Sours: https://www.airgunnation.com/topic/25-marauder-velocity/

Marauder velocity benjamin

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Marauder Tune Information Revised

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