not on purpose, but...when I've "dryballed"! As soon as I knew what I did, I pull the nipple and put a few grains of powder in the breech, re-ram, cap & fire. About 5 grains seems to give velocity similar to a baseball, and almost no smoke. It's embarassing, but at the same time kinda cool to watch the ball hit the target! Once, I even had a ball bounce off a gong, and dug it up out of the snow & re-used it.