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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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Yeah... (edited: more pics)

August 14 2011 at 10:12 PM
Phil  (Login Duane30)
Crosman Forum Member
from IP address 69.136.1.121


Response to becuase the slotting lowered the center line

Let me see if my cell phone can do a better pic, or pics...

I assume the Crosman intermounts will now work since the barrel is 7/16" diamater now. Did have a set, but traded them off a while back...

Be right back!

Notice the end plug. There is a slight radius removed equal to that of the tube. The removed portion is only as thick as the lip on the plug.

You can see my sweet solder job! Yeah, I am self centered on it! My first attempt at soldering on a Benji and it went too well!! You will also notice how the added tubes mate up evenly and centered on the breech taper.

I measured all the tubes (diameters), even the pump tube, then crunched the math as to how much the tube will need to be removed each time a tube was added, as the barrel got thicker by the layers.

My only question is if the head annealed the metal or not (?). Next, it will be media blasted then a nice coat of gray (or grey) appliance epoxy for that parkerized look. Any better ideas on paint?

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This message has been edited by Duane30 from IP address 69.136.1.121 on Aug 14, 2011 10:46 PM


 
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