I first got into black powder at Ft Lewis, WA. I was out shooting on the range on post one day, .54 and my revolver. The range used to get all of the old bowling pins from the alley on post, and folks would set them up on specially made frames and knock em down. Sooo, my buddy and I figured we would do the same with our BP revolvers. I was loaded and my buddy was now empty, so I started shooting. After a couple shots, the range master comes running out of his little tin building behind the firing line, yelling for a cease fire.
He was really ****** and was wanting to know who shot thru his window. He finally calmed down, and had a chunk of lead in his hand and said it came thru the window and bounced off of the wall. It looked like a slightly flattened out .451 ball.
We walked down and looked at the pins I had knocked over, and one of them had a depression at the thin point of the neck. Got an unfired ball, and it fit right in the depression.
Bullets do weird things.