Hornady Lead Balls 45 Cal .457 Lead BallsCompletely uniform in size, weight, and roundness, Hornady® Round Balls deliver consistent and accurate performance. They’re 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.ACCURATEPrecision swaged to eliminate air pockets and deliver optimal accuracy.TRADITIONALPure lead replicates traditional design.CONSISTENTUniform in size, weight and concentricity.IMPORTANT: Before choosing a round ball diameter, check the bore size of your firearm and take into consideration whether you’re using compression fit or patched projectile loading.