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Alan Alford's build

2250b Tube for later move to bulk CO2.
12" .22 Caliber Barrel from Doomsday Backpacker
Brian & Assoc. Alluminum Breech with 2 barrel screws
Original site rear
Pin site on Custom Mt. Airguns Muzzle Break
2x1 Centerpoint Scope with UTG dovetail adapters
Mountain Airguns Custom Bolt and Handle
Mountain Airguns Custom Power Adapter and spring guide
B&A Boss Valve for extra Power

Built mainly for fun and to shoot at local Field Trial Pistol Match.

It currently it shoots a 14.3 Crosman Hunting Pellet at about 530 fps in a 72 degree room for 8.92 FPE.



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Re: Flat top piston

May 21 2012 at 11:26 AM

dave  (Login arathol1)
Crosman Forum Member
from IP address 70.181.53.36


Response to Flat top piston

"Having studied this a bit, and checking with a few engineers, ( not counting being one ) I can see no merit whatever in a flat piston over the conical cup **properly adjusted** "

I know a few engineers and most tend to over analyze and rely on theory rather than experience. There is no replacement for experience when working with airguns. Flat top pistons do provide more power per stroke than the conical pistons. There is more to it than sealing and adjusting. Try it before you condemn it.

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