Hornady Swaged Lead Round Balls in 40 caliber-approximate dimensions .395" diameter, 93 grains. Hornady cold swages from pure lead which eliminates air pockets and voids sprues common to cast balls, creating a near perfect, consistent and concentric round ball used by the U.S. Muzzleloading Team who won numerous Gold Medals. Hornady's strict production procedures results in a smoother, rounder surface with unsurpassed uniformity demanded by muzzleloader's worldwide. 100 per box.