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 photo 63f5b325-0274-4312-9dbd-2effde5b3715_zps0x27orls.jpg

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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sooooo, all the force needed to overwhelm the spring

December 14 2011 at 4:24 PM

dan house  (Login dan_house)
Crosman Forum Member
from IP address 153.90.162.47


Response to It is as Ron shows

is apllied to that little surface area (in green on Rons drawing)?

does that small surface area contribute to the amount of presure necesary to open the check valve, or is that all spring....?.



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