Goex sells a lot of them, a few different types.
How much black powder do you want together in the same container?
As for smokeless powder, before my tragic ice fishing accident, I reloaded a few cartridges. Many took well more than 70 grains, meaning less than a 100 cartridges per pound. I don't like to change component lots in the middle of a run, so 1 pound cans are off the table.