Hodgdon Pyrodex P is intended to be a direct replacement for FFFg Black powder when measured volumetrically using a black powder measure. The principal uses for Pyrodex P are in muzzleloading pistols, cap and ball revolvers, and in small bore, muzzleloading rifles. Like all grades of Pyrodex, it burns cleaner and produces less fouling than blackpowder.Specifications and Features:Do not exceed the loads displayed in the reloaders guide.Never mix any two powders regardless of type, brand, or source.Never substitute any smokeless powder for Black Powder or any Black Powder substitute.