Going to have to explain that one to me Sabot. How can a rifle rated for 4 pellets get a stuck BP from shooting BH? From what I just read on the site it tries to say since it is machined with such close tolerances that there is no blowback on the threads so that shouldn't be why. If he only loaded say 120gr BH it shouldn't at all be a pressure issue. Hell, they say they tested it to 125,000 PSI which would take a pretty good handfull of BH to accomplish that much pressure. I'm sure he didn't screw up and load up that much BH. With the .45 pistol case surrounding the nipple and closed off with the bolt that should seal things up pretty well so that shouldn't be the problem. Just trying to wrap my brain around that one is why I am asking.