Bought a 10/22 a few weeks ago. Finally got the thing to group decently after trying some different scope/ring/ammo combinations. Now I just have to figure out how to keep it from hanging up every 3 or 4 shots. The strange thing is that it feeds a new round but the old brass keeps the action from closing all the way. I can't figure how it can feed without completely ejecting the old brass. Any suggestions on a fix?