How did the musketeers carry the gunpowder in Napoleonic Era?

by PraiseBasedDonut

AFAIK there were no one-time plastic baggies at that time.

Rittermeister

Combat soldiers almost always used pre-manufactured paper cartridges which contained both powder and shot. The cartridge would be torn with the teeth and the powder, shot, and paper dumped into the barrel, in that order. These cartridges were stored in leather cartridge boxes worn on the belt; 40-60 rounds would be a normal load. Additional cartridges would be transported in the wagons of the army supply train, to be issued to the troops when they ran short on ammunition.