so i was out shooting a few. on the last shot it locked the slide open, when i went to remove the magazine i noticed the empty casing still in the gun. i dont have a camera to post pics but basically when it extracted the empty casing, it somehow pulled it back, and down between the magazine feed lips. it pulled the casing almost straight back, and spread the feed lips as it lodged the empy there. i expect the magazine to be ruined although i haven't removed the empty from it yet. the casing was left in the magazine lips centered, but with the front of the casing with a slight rise and the magazine follower still engaged the slide stop. and the wierdest part is on the front of the casing, the edge that was on top. it has a couple dimples that looks like the slide had been released on the empty, but it haddent. any ideas on this one?