Blue Diamond Features Available in three grain weights the Blue Diamond Muzzleloader Bullets take accuracy to a whole new level. Berry's proprietary sabot ensures easy loading and a tight seat providing match grade consistency shot after shot. The polycarbonate tips create excellent expansion without sacrificing weight retention. Whether it's the high slopes of the Rocky Mountains for elk or the prairies of Kansas for whitetail deer Berry's Blue Diamond Muzzleloader bullets deliver the success that the modern black powder hunter expects. Blue Diamond Specifications Brand: Berry s Mfg Bullet Material: Jacketed Lead Bullet Type: Bullet And Sabot Grain: 275 Gr Reloading Caliber: 45 Cal Reloading Diameter: .451