About a year ago I put together a 220 Swift on a Yugo 48 action. I have never been able to get the rifle to feed correctly. It will not controll feed and many times the cartidges will slide forward in the magazine and the bolt is unable to pick them up. I imagine that part of the problem could be solved by installing a magazine block, but I am more concerned with the cartridges just popping up and having to force the bolt down on them as they enter the chamber. Does anybody have any ideas, or know of anyone who could correct this problem?