Both. I will find a bullet mould for the greaser bullets and fireform all the new brass. I have 500 of them, lol! I would also shoot those for fun and let my braver family members to "belly up to the bar" and experience launching freight trains at 1300 fps....
The Paper Patch bullets actually require less cleaning of the barrel, but using a blow tube to soften the chamber fouling. There are newer cleaning techniques such as pushing "pigs" down the barrel, which I will investigate after I get some rounds down it.
Black powder is a filthy mess, but it's glorious at the same time.