Ramshot Smokeless Powder is newly manufactured, meaning it hasn't been pulled from loaded ammunition and it's not military surplus powder. Every powder in the Ramshot family is double-based and spherical shaped. Ramshot ZIP is a clean burning, double-base propellant designed for a wide range of handgun calibers. Low charge weights make it the most economical and versatile choice for high volume shooters with the added benefit of low recoil, low flash and minimum residue. 9mm, 40 S&W, and 45 ACP are just a few of the cartridges that are well-matched with this powder Other Important Information: 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.