50ct Box - .45Cal bullet can be used in a sabot, purchased separately, or can be annealed and swaged for use in 45Cal Muzzleloaders. The new MZL Maximus high BC muzzleloader bullet was designed for use in in-line muzzleloaders and could possibly be the most accurate muzzleloader bullet ever made. These bullets are machined on a CNC Swiss style lather out of solid copper bar stock and will function down to 1300fps. Technical Info: Weight: 250 grains Required Twist Rate: 1:30 or faster G1 Ballistic Coefficient: .200 G7 Ballistic Coefficient: OAL: .912