Last time I used my apple cannon the cap blew off the end. Seems the threads on the cleanout got worn from too many bushels of apples going at the barn and it couldn't hold the pressure any more. One day I loaded it up and boom! My hand was numb for a while with a few minor cuts. Ever had a fire cracker go off in your hand, thats the feeling. Had to spend the rest of the weekend holding my beer in my left hand. Moral of the story is be careful where both ends are pointed, not just the live end. This was a while back and I still haven't got around to building the next one, but these stories are givin me the urge. (I never learn).
Mike
Mike