black powder is cheap and easy to make, its also dirty, slow expanding, very smokey. but when there is no powder available, blackpowder is the most expedient thing.

its also low gas pressure so if you are manufacturing from tentative material, you really should load with black powder, and use enough that it wont squib.

there are a few videos still around, where people load with smokeless powder in a musket, or muzzle loader, instead of blackpowder.

this will blow your barrel open.