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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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The barrels...

February 12 2012 at 7:53 PM
robert  (Login gubb33ps)
Crosman Forum Member
from IP address 68.105.50.68


Response to more or less anticipated the issues

...are choked, so they did try something different. But the bore is rough and a bit over size.

Seems like 3 choices:

A Marauder barrel could be made to work, but would lose the choke when shortened. that may not be bad, have had several non-choked barrels shoot well.

Custom LW barrel.

Mod the bolt to carry an O-ring and use a standard Crosman barrel (or after market 22XX barrel).

Of the three, belive I'll eventually go with the o-ringed bolt and probably a 5mm LW barrel.

 
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