It's been done thousands of times, never with anywhere near decent results so far as I know (yes, I was one of the thousands ). As Bronko said. the patterns are horrendous - totally useless beyond fifteen or twenty feet.

But go ahead and give it a try for yourself. You can't hurt anything. Drop about 60 grains of powder down the tube. Ball up one square of toilet paper and tamp it down on the powder. Drop some shot down on top of that - about 1-1/2 times the volume of the powder. Then ball up a half-sheet of toilet paper and ram that down for an overshot wad. It's fun and interesting to play with and, as I said, you can't hurt anything except that you may need to stomp out some smoldering toilet paper on the ground ten feet from the muzzle. So don't do it in a fire hazard area.