The new Cutting Edge Maximus 40 Caliber Muzzleloader Bullet was designed for use in in-line muzzleloaders and could possibly be the most accurate muzzleloader bullet ever made. These bullets were designed for that after 1-2" of penetration, 4 blades break off and radiate outward away from the main wound channel while the base continues through for even deeper penetration creating a massive amount of trauma. FeaturesRequired Twist Rate: 1:24" or fasterG1 Ballistic Coefficient: .285OAL: 1.121"