Hornady Black Powder 32 cal Lead Round Balls for MuzzleloadingHornady . 32 Caliber Lead Round Balls for Muzzleloading The . 32 caliber is the classic small bore muzzleloading cartridge light, accurate, and economical to shoot. Favored by squirrel hunters, small game shooters, and traditional muzzleloading enthusiasts who appreciate the challenge of a small bore rifle, the . 32 caliber demands a consistent, well made projectile to perform at its best. Hornady . 32 Caliber Lead Round Balls deliver exactly that