I think I would get 2 jugs of 2400, and 2 jugs of unique..... I can make my own black powder, but if i couldnt make black powder, it would be 2 jugs of 2400, and 2 jugs of pyrodex....
I can load all of the guns that I NEED to shoot with 2400, but for shotgun slugs, buckshot, and waterfowl, blackpowder is the stuff to have... You can load all muzzle loader BP rifles and ALL cal shotguns either in shotshells, or by just using the brass part of a high brass shot shell, you can turn any single shot shotgun into a muzzle loading long gun....
AG