Where do we buy stuff, you ask?
At the time i bought my rifle from muzzle-loaders.com, some competition for "stuff" (and you need a lot of stuff) was tacticalwholesalers.com. I got some from muzzle-loaders at the time of the rifle and just about a boxcar load of stuff from Tactical because their prices were so cheap. Then in 2018 or 2019, Tactical abruptly stopped selling all ML stuff and i dont know why. During the past couple years I didnt need anything and now I do so i'm looking. Kittery Trading Post is one, muzzle-loaders.com and CVA itself. There is also Academy, like this:
https://www.academy.com/shop/browse/outdoors/shooting/ammunition/blackpowder-ammunition-There is also Buds, like this:
https://www.budsgunshop.com/search.php?q=black+powder&type=
Im sore about Tactical because they had the lowest prices and everything A to Z. Now there is no one place that i know of to get everything. You'll have wish lists and carts partly full in several places which isnt fun.
Also about Tactical, ok when you look at a place like muzzle-loaders.com you assume that they are showing everything in the market thats available for a ML. Tactical had much more which got me more excited about ML in general. Well, how would you know all the stuff thats available? Even CVA doesnt have it all. I cant even remember everything Tactical had because it was so much. Now something I want turns up as a lone item at some non-traditional source. Shopping isnt so simple now.
Get on the email list at muzzle-loaders because they have sales but you have to act fast when you get the notices because stocks run out almost immediately. You can also google for specific items you want and see who turns up, then set up a spreadsheet to chart the places and prices because you cant keep it all in your head.