So I suppose the question then is how hard is it to acquire the black powder and primer? I know when I was a teenager in the 90s, in rural Ohio, it was very easy for my friends and I to get our hands on the stuff. Is that still the case today?
There are effectively no primers for sale right now for common calibers, and that’s been the case since ~February of 2020.
Oh, and it’s not “black powder”, but “smokeless powder”. There are tons of varieties, and most are only suitable for one or two applications. Pistol powder is different from rifle powder, for example.
Black powder was replaced over 100 years ago and guns using it are not regulated, not even considered proper firearms. Pistol or rifle powder (they are different because they burn different) are easy to purchase legally in small quantities.
