One of my friends was shooting his G43 and he dropped the mag with a round left in the chamber. He fired at a target and got a jam. It appeared the case head seperated and left a partial piece of brass in the chamber. He then locked back the slide and retrieved a wooden dowel from his bag and proceeded to pop out the piece of brass. Low and behold it was in backwards. It had extracted and flipped around and rechambered head first. Talk about weird. I suppose the lack of magazine caused a peculiar condition that caused it. Not the strangest thing I've ever seen, but nevertheless.