As promised, I took my quarter scale Napoleon cannon with me on vacation along with another hard drive destined for destruction. With all of the family commitments, it took a while to get around to it, but this morning I dragged it out on the beach and cancelled the hard drive's ticket. I think the movie clip and pics show that the results were favorable. I need to find someone with a chronograph and find out what the velocity of the ball is. By the looks of that hole it was moving along at a pretty good clip.