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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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More pics..

November 26 2011 at 8:55 AM
Mark  (Login Specman)
Crosman Forum Member
from IP address 85.211.137.242


Response to Surely this is not right? Any comments appreciated...

Here is a shot of the stainless probe simply pushed into the .177 barrel, no breech to confuse the issue

[linked image]

Here is a brass .177 extended probe

[linked image]

Here is the two probes side by side, not a great picture I am afraid and hardly scientific. Not easy to see but I used the lined paper through the bolt holes to centre.
The brass bolt has more brass behind the handle and doesn't reach so far into the barrel

[linked image]

I'll try to measure the distance between the bolt handles and the o-ring grove as accurate as possible for each probe.

 
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