The new Cutting Edge Maximus 45 Caliber (40 Cal in 45 Cal Sabot) 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 2-3" 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. These bullets are machined on a CNC Swiss style lather out of solid copper bar stock and will function down to 1300fps. This 12-pack comes with blue Harvester crush rib sabots. FeaturesRequired Twist Rate: 1:30" or fasterG1 Ballistic Coefficient: .173OAL: .771