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 LRT (Long Range Target) is targeted at 338 Lapua shooters. The burn rate is similar to Retumbo.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.