May or may not be applicable, but I'm trying to help. I have a Browning Buckmark, and a SW mp15-22. When I started out, I was not careful about lining up the 22s level and flush against each other in the magazine as I loaded. Had misfires from both about half the time. Read an article about the importance of being careful, especially with the banana clips in the mp15-22. Once that was solved, so have been all my problems. No misfeeds in either gun since. Hope that's of some use.