There are numerous threads here about what three, or two, or whatever, type of guns, one would have if there was some sort of limit. I want to try that here. If you were somehow limited to only one rifle powder and one handgun powder, what would they be? Looking at my current firearms here are my two choice. For rifle, Varget. It wouldn't be the best choice for all my long guns, but it is one powder that I could use in all of them. W231 would be my one pistol powder. Again, it would fit the bill for my handgun applications.