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 theRamshot family is double-based and spherical shaped. Ramshot SILHOUETTE is the choice for competitive shooters in IPSC, IDPA and USPSA. A double-base high performance powder, it's is an excellent choice for 9mm, 38 Super, 40 S&W and 45 ACP. It has a low flash signature, high velocity, and clean burning properties which also make it the perfect choice for indoor ranges and law enforcement applications. 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.