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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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Metallurgy question...

June 25 2012 at 9:20 AM
Airfierce  (Login Airfierce)
Crosman Forum Member
from IP address 66.81.29.218

Hi guys,

Wondering if y'all know some temperature numbers for the heat treating of barrels, air chambers & miscellaneous parts on Crosman's?

Not sure where it applies, but thinking in terms of re-bluing parts, baked finishes, welding, brazing & soldering jobs at temperatures that might undo factory heat treatment if it exists. One method of blueing is to heat yellow or orange or near cherry red and quench in various types or weights of oil depending on desired finish. Even cold blue is better when parts are heated, but...?

I'm not sure which parts might have been heat treated in the first place except those that are obviously hardened like hammer sleeve etc. Any guidelines in general? No harm no foul? I'm aware of normalizing an entire piece after a process to realign grain throughout, so that parts don't warp, but wondering about those temps also. Suggestions?

Mine are vintage guns from the late 40's to mid 60's.

Thanks!

 
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