A while back, I had a buddy machine me another hammer weight set up so the gun would now become a separate cock and load gun. I wanted the custom hammer to be heavier than the factory hammer. The O.E.M. hammer weighs 1.9 oz and the custom one weighs 4 oz. including cocking handle. I also opened up the air-tube hole a tad bit more to MAX....lol. My buddy also made me a custom DELRIN Transfer Port and we got rid of the brass TP. I also moved the Bi-pod more forward and filled the previous stud hole with WOOD BONDO and retouched it up. I also scrounged up a stiffer smaller spring than the one my buddy sent me. And began trimming it too length. Yes, the mainspring is a DUAL setup. I also polished the heck outta the hammer and that gave me a little more FPS also.
Already got some round ball for it and i also have some Mark Whyte 175 gr Truncated Cone bullets. Jerry Boyenga at SUREFIRE Slugs is ALSO sending me some 220 gr Raptors. So far, from a 3000 psi fill, 454 cal Hornady Round Balls are doing 898.6-909.6-875.6, Jerry's 220 gr Raptor slugs are doing right at 700 FPS for the 1st shot but will be just a tad faster on the second shot. More chrony work to come (gun is kinda loud in a TOWN HOME community..lol). The 175 gr Mark Whyte bullets.......NOT SURE YET! Haven't chronied them yet. But they are probably gonna do about 800 FPS or so.
Some Pics.
Gun in full dress with the BI-POD moved forward for better balance:
Separate side cocking lever:
OEM vs custom hammer and springs:
Leroy Roduner MALE quick fill probe:
A 3 shot Chrony String:
Stay tuned for the next post!