Crosman 2240 Review



Crosman 2240 Review

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In factory form the Crosman 2240 is a fun plinking pistol with a velocity of slightly over 400fps with 14.3gr pellets. Accuracy is quite reasonable with the 7.25" factory barrel.

The 2240 is sometimes referred to as a "diamond in the rough" because there are so many modifications available for this little gun. Modifications include metal breeches, bulk fillable adapters, longer barrels, valve performance tweaks, and the list goes on.

I recently had the opportunity to do an extensive test on a modified 2240. This gun was modified by a Canadian named Kim Kowalchuk (aka Whitewolf). This specific gun is known as his "Whitewolf 2240 Hunter" because performance is enhanced for hunting purposes with little regard to CO2 consumption.

The mods on this particular 2240 include the following:

-CJ Rino Breech

-Extended bolt probe

-12" Crosman barrel (2289 barrel cut down,crowned and lapped)

-Trigger tuned to 2-3 pounds

-Valve work (porting, lighter spring, port angle altered)

-2289 hammer spring

-Muzzle brake

-Nickel plating

-2X Nikko Sterling scope

-Silver Millet rings

The valve stem on this gun was recently replaced by myself do to a lifting stem seal. This stem is an unaltered factory replacement. I also replaced the breech-to-barrel seal several times as I tried to maximize velocity with a tight seal.

Breech-to-Barrel Seal

This little seal has given me much grief over the duration of my testing. The origianl CJTune seal was accidentally crushed and replaced with something else before I received the gun for testing. The seal that was in the gun was an inadequate replacement which was leaking badly.

I first tried a stack of 2 o-rings under the breech and had to shim this stack with a small washer. This system produced velocities of only 460fps with 14.3gr pellets. Obviously leakage was a problem.

Next I tried a short piece of oxygen tank tubing from a drugstore. This tubing measures approximately .225" OD. This clear tubing has an internal support structure that creates a slight restriction of air flow through the tubing. This structure helps prevent accidental crushing of the tube when it is used on oxygen tanks and masks. The velocity using this tubing was approximately 500fps with 14.3gr pellets.

Finally I tried fish tank bubbler hose. This hose measures about the same as the oxygen tube except there is no internal support structure to restrict flow. With a tight fitting "bubbler hose tube" I was able to achieve velocities of 534fps average for 14.3gr pellets. This velocity lasted for a few powerlets but the next shooting session had velocities back to 500fps. I think the seal either shifted or shrank. I once again made a new seal and this time I achieved a 530fps average with the same test pellet. All was well for another day. The next day the velocity was back to 500fps. I have taken the 2240 apart enough times to loose interest in changing this seal again. I'm sure I would eventually get the correct length and things would stabilize at 530-535fps but velocity readings were consistent at 500fps so I did the accuracy testing at this velocity.

After all my testing was completed I obtained the correct seal length for the Rino breech from CJTune. The proper length should be .170"-.180". If I was thinking properly I would have asked for this info before I experimented with various tube lengths. Oh well.

Velocity Data

I was able to check velocity with a tight seal on two occations. This data I believe is the true potential of this particular gun. With a bit of patience a new seal should maintain the velocities I obtained with a tight fitting seal.

Below are the velocities I obtained with a new seal:

Crosman Copperhead WC (14.3gr) - 535, 533, 536, 536, 536, 535, 532, 537, 532, 532----AVE= 534fps

Beeman Kodiak (21.1gr) - 453, 452, 452, 448, 447----AVE= 450fps

Velocities with shifted (or bent) seal:

Beeman FTS (14.6gr) - 501, 500, 501, 501, 499, 501, 501, 499, 497, 498------------AVE= 500fps

Beeman Trophy (14gr) - 506, 509, 502, 504, 502, 501, 504, 504, 502, 499-----------AVE= 503fps

RWS Superdomes (14.5gr) - 503, 505, 502, 500, 504, 503, 503, 500, 501, 498----AVE= 502fps

RWS Hobby (11.9gr) - 542, 539, 542, 539, 539, 540, 541, 540, 539, 537-------------AVE= 540fps

The top velocity figures give a true idea of the potential of this gun. The lower figures are helpful to see how consistent the velocites are among a 10 shot series. All shots were spaced about 30-40 seconds apart during the test. I found that firing quickly produced higher velocity fluctuations.

The temperature for all the testing was fairly stable at 68-69F degrees.

Accuracy Data

Below are the groups shot from the custom 2240 pistol. All groups are 5 shots each at 10 meters and measurements are calculated center-to-center.

Throughout the accuarcy testing the pistol was clamped in my Black and Decker Workmate to help minimize shooter error and give a fair evaluation of the guns true potential.

Crosman Copperhead WC - .390, .255, .433, .382--------AVE= .365"

Crosman CP -.433, .384, .200, .354----------------------------AVE= .343"

Beeman FTS - .245, .392, .180, .441--------------------------AVE= .315"

Beeman Trophy - .456, .434, .412, .525----------------------AVE= .457"

Beeman Kodiak - .298" (Out of these pellets)

RWS Superdome - .453, .469, .212, .400--------------------AVE= .384"

RWS Hobby - .404, .531, .368, .610---------------------------AVE= .478"

JSB Exact - .218, .438, .344, .437------------------------------AVE= .359"

I shot a few more groups with JSB Exact.

JSB Exact - .329, .311, .395, .246------------------------------AVE= .320"

JSB Exact - .455, .372, .357, .348------------------------------AVE= .383"

JSB Exact - .219, .435, .424, .369------------------------------AVE= .362"

Accuracy with the Custom 2240 is quite consistent. I averaged out all 41 groups listed above and came up with an average of .375"ctc which is exactly 3/8"ctc. Accuracy seems to be generally .32"-.36"ctc with the favoured pellets. This is not olympic grade results but for a fun plinking gun it is more than adequate.

Gun Measurements

From the back of the gun to the front of the muzzle brake measures 16". The 2X Nikko Sterling scope extends rearwards bringing the total length to 18" from the beginning of the scope's eyepiece to the end of the muzzle brake.

The weight of the Whitewolf 2240 is 2lbs.12oz with the scope mounted.

Disclosure

Finally, I would like to say that I have no affiliation with Whitewolf or CJTune. Although I live in Canada, Kim and I have two provinces and many miles between us.

The gun that was used for this review does not belong to me. I originally obtained the gun from a friend to repair the stem seal and he allowed me to use the gun for the review. Thanks Art!

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