FORGET the muzzleloader for shtf.
There AINT any bison herds anymore. The big game will all be gone within a month or 2 of shtf. making blackpowder for bombs is one thing, "granulating" it for decent performance in a firearm is quite another. It's VERY dangerous. Dupont and Pyrodex BOTH have blown up black powder plants, for instance. The HUGE amounts of black powder needed make it VERY inefficient. You can take livestock and deer with a .22 rifle, and it's dead flat EASY to carry 500 rds of .22lr, which will last you 20 years or more. The muzzleloader SUCKS when you have no solvents, or proper oils. EVERY time you fire it, you HAVE to wash it out with boiling water and soap, or it will corrode BADLY. That's a LOT of time you AINT got a gun ready. It's NOISY, short ranged, a single shot, and the smoke HIDES your target, and MARKS your location. VERY bad idea, when there's enemies around with auto rifles. A .22 rifle has the same effective range as a muzzleloader, really. so you can't outreach them, and they have rapidfire, scopes, concealability, etc.
If u are BORED, get an electronic shooting timer, and go FASTER with your hitting. There is no LIMIT, really, to how much better yo can get, if you use both rifle and pistol, and either hand-eye. You will NOT "max out" your ability with both, with either hand, I guarantee it. What black powder USUALLY means, you INTEND to wimp out and not FIGHT over the outlawing of autorifles.