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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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EXTRUSION.....

July 31 2012 at 12:21 PM
Greg Lundy  (Login BALLISTIC1)
Crosman Forum Member
from IP address 70.194.6.234


Response to investment casting ( real world term) nt

Extruding is exactly the correct term and it works ALMOST exactly like the Play Dough FunFactory. An aluminum billet approximately 6" in diameter 3' long is loaded into this big hydraulic press it is heated but not to melting... The die is inserted into the machine and it squirts out the desired shape... Investment casting usually involves making a mold, casting a positive of wax, inspecting wax positive for voids, defects, etc. And if all is good the positive is made into a mold and when the metal flows in the wax is melted out and the metal fills the void... It is also called 'lost wax' method... It is called investment casting because it is a sustantial time and effort to produce parts this way.. It is cheaper to cast a 'Bad Part' out of wax than metal.... Greg

Ballistic Enterprises #1 513 490 0035 "GO BALLISTIC!!!!" BE#1

 
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