Speer Muzzleloader Round Lead Balls .451" are swaged from pure lead and manufactured using a special process that ensures maximum uniformity. Each ball features a smooth and round surface, which enhances rotation and contributes to consistent accuracy.Key FeaturesCaliber: Designed for 44 caliber muzzleloaders.Grains: Each ball weighs 137 grains.Units per Box: Packaged with 100 lead balls per box.