I'm about to start a project: homemade ammo. In this crazed time, when some calibers seem to have disappeared off the face of the earth, I've made a small quantity of black powder, cast some "Big Lube" bullets, and made a batch of Gatofeo #1 lube (a 19th C. recipe that works with black powder). I'm also planning to try "recharging" some primers from scavenged range brass, using paper roll caps (I'm NOT going to try making mercury fulminate or some other dangerous concoction).
It should be fun to see if I can make workable .45 Colt ammo from fired brass, with no new primers, powder, lube or bullets. I consider the paper caps VERY corrosive, unlike the black powder, which draws water, but is not corrosive in and of itself. I'll be dropping the cases into water -- probably with Windex -- to stop any reactions on the brass. The pistol will be cleaned right away with Ballistol.
I've always been interested in black powder cartridges. I'll be using these in a Remington New Model Army ("1858 Remington"), with a Kirst conversion cylinder which dropped in and functions beautifully. Do I need to do this? Nah, but I want to try black powder, and the ammo shortage gives me an excuse. I also like the idea of having some independence from the supply chains, even if it's just for practice or recreational ammo.