Hornady .451 Diameter Round Ball. Theyre cold swaged from pure lead which eliminates air pockets and voids common to cast balls. And the smoother rounder surface assures better rotation and consistency. Specifications for Hornady Lead Muzzleloading Round Balls: Manufacturer: Hornady Lead Free: No Dimensions: 2.30 X 3.50 X 4.15 in Number of Rounds: 100 Features of Hornady Lead Muzzleloading Balls ACCURATE Precision swaged to eliminate air pockets and deliver optimal accuracy. TRADITIONAL Pure lead replicates traditional design. CONSISTENT Uniform in size weight and concentricity. Package Contents: Hornady Lead Muzzleloading Balls Hornady .451 Diameter Round Ball