Dakota Kid, you want to use FFFFG or 4FG for your priming pan. 3FG is usually used for small pistols and revolvers, and 2FG is used as a propellent in most of the larger caliber rifles and shotguns. I am not sure where to get real blackpowder in ND. Some of the other people on this site might know, I use pyrodex myself as it is easy to clean and most stores stock it. You are on the right track with your flintlock, blackpowder is quite a bit easier to ignite than pyrodex, so you should have better ignition with blackpowder in your flintlock.