Accurate Powder features a large assortment of smokeless powders for serious loaders who want high impact for any type of firearm-including handguns, rifles, or shotguns. Accurate Powder carries a powder tailored for the type of shooting you do, whether it's full power powders for hunting or long range rifle shooting to reduced powders for cast bullets, cowboy action, handgun or target loads. If you want consistent loads that stay on target, get the advantage of Accurate!
1680: Ideal powder for large capacity, high performance handgun cartridge loads, including calibers like .454 Casull, .460 S and W and .500 S and W. It's surprisingly efficient and well suited for other low-capacity rifle cartridges such as the .22 Hornet and 7.62 x 39.
Sinclair, Issue:3A, Page:103