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Posted by james Thanks,
on 4/16/2007, 4:15 am
152.163.100.134
Hello. Has anyone used the American Pioneer BP substitute? I'm finding that load velocities are all over the place! I mean one shot at 723 fps, and two shots later in the same cylinder and BOOM 1291 fps! I suspected something strange because recoil from shot to shot was very different, so I set up my Shooting Chrony, which I know is very accurate and consistent. I'm shooting a Ruger Old Army, CCI #11 caps, lube impregnated felt wads, Speer .457 round balls, and a flask with volume screw-on spout that I cut to throw a charge that pretty much fills up the chamber. I ram each ball to the same depth (ram stops on the frame, and I get a perfect little circle of lead from each ball being rammed home. I thought maybe something was off with the charge volumes, but when I got back to the house, I used the flask to throw six charges separately onto my grain scale and they measured 35.5 to 37.5 grains each, so about 5% variation over six loads. There is a very noticeable recoil difference from shot to shot that I knew I wasn't imagining. Any ideas? What the heck?
James
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