Reloading a black powder pistol cartridge is not terrifically different from reloading a smokeless one. The case sizing, depriming, mouth flaring, repriming, and bullet seating & crimping operations are identical. The one big difference is that you measure the recommended powder charge WEIGHT (from a reloading reference) but you load by VOLUME for black powder. That is, the case is filled to just above where the seated bullet will be when finished. Black powder needs to be at least moderately compressed to burn well. Seating and crimping the bullet on top of that moderately compressed charge of black powder is correct.