Blackheart, did you see the picture I posted? That's a full sized 2 and 3/4" 12 gauge shell, and I didn't stage that picture. It happened three times just from racking the action with a loaded magazine. The third time it happened, I laid it down in my gun case and took a picture of it to show my gunsmith. Same thing happened to Hickok45 while reviewing a Mossberg pump shotgun. If it were impossible, it would not have happened three times to me, and been captured once in a Hickok45 video. He was using standard 2 and 3/4" shells, too.