The Muzzle-Loaders Black Powder Revolver Powder Measure makes loading your revolver easy and consistent. The convenient, 100% brass tube is perfectly sized for revolver chambers and small-bore muzzleloaders, giving you more dependable and accurate loads. This durable measure can handle from 5 to 45 grains of blackpowder or Pyrodex™ propellant. The solid brass construction won't cause any spark, and works well with all muzzleloading or black powder pistols.