My Dad's got what could be the ultimate cast boolit gun. A homemade blackpowder cannon with a 1.975" bore. A friend of his turned it out on a lathe from steel 30 years ago. The bore will just fit a frozen orange juice can filled with cement. (at least the cans 30 years ago fit according to my Dad.)
I shot the cannon last weekend at my four-year-old son's birthday party. He's into pirates, so we had a pirate party and of course Daddy had to get out a real cannon to show the kids.
I loaded it with 120 grains of black, a few crumpled sheets of newspaper packed down hard as a wad, and then filled the rest of the bore with Tootsie rolls and lollypops. The charge was just right, not too loud and blew candy about 75 feet in the air. Wrappers were a little singed, but the kids had a great time picking it up in the yard.
Which brings me to my idea. I'd like to make a roundball mould for the cannon. A lead ball about that size should weigh about 11,500 grains. I am trying to envision how to design the mould and possibly cut it on an NC Bridgeport at work.
Anyone ever made a big round ball mould?