Precision turned from solid copper, the Cutting Edge Raptor 50 Caliber (45 Cal in 50 Cal Sabot) Muzzleloader Bullet was designed specifically for .50 caliber in-line muzzleloader rifles. Precision turned from solid copper, the MZL Raptor delivers devastating trauma and extreme accuracy for muzzleloading rifles. Never before has a bullet been available that compares to its performance and function. FeaturesWeight: 160 grainsRequired Twist Rate: 1:30" or fasterOAL: .627" w/o tip, .868" with tip