:-1 lb. canister-Delivers top velocities with great accuracy in 44 Magnum, 454 Casull, 475 Linebaugh and the 460 and 500 S&W magnums-Silhouette shooters claim it is the most accurate 44 powder they have ever used-Choice for 410-bore shotgun, especially among top competitive skeet and sporting clays shooters-Handles all 2-1/2-inch, ½-oz. loads, as well as all 11/16-oz. loads for the 3-inch version