Frank, I've got Ted Cash beat, and my thing joins both blackpowder and pipe worlds. I take my used tobacco tins and, in the winter months, whenever we feel like having a fire, we've got an old cooking wood stove in our fireplace my uncle bought and put there in the sixties. I should probably mention here that we live in a brick Cape style house with a slate roof that my father and uncle built in the thirties. I actually grew up in a bigger brick house my father built on his own about a half mile away, but that's another story.
Anyway, the actual fire chamber in the cooking stove is pretty small as far as wood stoves go, but it holds a good amount of wood and hot coals. I place a few tobacco tins in there and let them get burned red hot s o they're eventually devoid of all traces of logos and writing, just basically a gunmetal grey with swirls of blue, red and other colors. Some turn out plain, some are real surprises and turn out beautifully varied in their colors.
I rub them smooth, put a fine layer of wax on them to protect them from rust, and carry various possibles in them; wads, cards, patches, tow, anything needed to maintain the particular gun they will "belong" to and put them in the corresponding shooting pouch. You can bet I'll be making up some little tins with your beeswax formula in them, because that stuff comes in handy in many ways
Yet another fun thing to do for an old guy. I've never fired off a cannon, though!
Plus, I can "oil up" by just running my hand over my forehead or bald head!! 