Barnes Expander MZ Muzzleloader Bullet .50 Caliber .451 Diameter 250 Grain. 50 Caliber .451 Diameter 250 Grain 45126 on sale and available from our online store. OpticsPlanet is an Authorized US Distributor for Barnes Muzzleloading Supplies. With 100percent copper construction to deliver exceptional accuracy and shocking power. On impact the nose cavity expands to create six razor-sharp petals for deep reliable penetration. Retains virtually 100percent of their original weight. Specifications for Barnes Expander MZ Muzzleloader Bullet .50 Caliber .451 Diameter 250 Grain 45126: Manufacturer: Barnes Projectile Caliber: .50 Caliber Quantity: 15 Lead Free: Yes Sectional Density: 0.211 Package Contents: Barnes 45126BA Expander MZ Muzzleloader Bullet .50 Caliber .451 Diameter 250 Grain We offer the complete line of Barnes Muzzleloading Supplies. For our complete selection of products by Barnes on sale please visit our Barnes page. For more Muzzleloading Supplies please visit our Muzzleloading Supplies store section. Barnes Expander MZ Muzzleloader Bullet .50 Caliber .451 Diameter 250 Grain