Clumping is in the bottle. It has nothing to do with what's in the barrel.
Do you agree that's it's just APP powder Randy?
I've not had any "in the bottle" clumping. The shooting I've done has been with a .50 cal. Omega. It
does form a ring by the QLA, easy to brush away, and not at the level of Pyrodex / T7 as far as filth and clean-up. That the OEM is APP is no secret, Alliant has been very open about that. It is improved over Shockey's, so a flippant "just APP" isn't exactly accurate.
