Vrichard-I really would like to acquire a winchester cannon but the prices I've seen are a little salty.Maybe I'll get lucky and find one at a yard sale.
The Winchester 10 Gauge comes in a cool box. Its just a shipping crate with stenciled in red "one breech loading cannon". 2 weeks ago I saw some ammo for it at the gun show. The guy had a partial box for $84. It didn't make much sense to me and I passed.
My wife gave me a Napolean II cannon for Christmas one year back in the 1970s. We assembled it but it didn't give very good results. I had a buddy who was a machinist. I asked him if he could bore it out to 12 ga. He said sure. That turned a difficult toy in to a great one. All most of us seek is a very satisfying boom. The power pistons of shotgun fame can be used, then reused until they're torn. If you get a good load, you even get a smoke ring. That and the concussion shakes everything around you.
A good story. Back in the 1990s we were at a club owned gravel pit for the 4th of July. Just a bunch of friends sitting around, maybe some adult beverages. And the ever present fireworks. One of my buddies is a pretty good story teller. Up comes a little boy, maybe 7 or 8 years old. He kind of sadly handed my friend a burnt spinner. Just a little metal disk with pedals bent to form a propeller. The powder charge spins it and up it goes. So the buddy decided to put the little guy on and told him that when he was young, he could usually make them go off a 2nd time! Everyone was watching to see how Michael talked himself out of that one.
But the entire time my son and I were working like mad. We got the cannon turned on its base, put in a fuse (we always precut them) and then dumped in a couple of capfulls of black powder (4f) and pushed in a plastic wad, tamping it down pretty good. Then we set it back on its wheels with it aimed out across the way (safe direction) we lit the fuse. Long fuse, but good because the story was wearing thin. Then just before the sparkle went in the hole, the story teller just took a lighter, aimed it at the spinner and threw it up in the air. And of course it did nothing but flutter up.
And then the boom hit. A full compliment of innocent by standers, getting ready to laugh at the guy. You should have heard the things they were saying about him and me. Many of their comments can be refuted with a copy of my parents marriage license. We laughed about it for a couple of years. It was one of our better unrehearsed stunts.