This bullet was designed exclusively for .416 Barrett rifles. Our MTAC line is machined out of lead free solid copper bar stock on a CNC Swiss lathe. These are a high BC, solid bullet designed exclusively for target use at all ranges. A unique feature of this bullet is our patented SealTite band which is a band slightly larger than caliber diameter around the bullet which was designed to eliminate fliers by preventing gas blow-by. The SealTite band also decreases copper fouling which is typically associated with mono metal bullets. The required twist rate for this bullet is 1:13 or faster. *If shooting through transonic, a twist rate increase of 1 inch is recommended (ex: 1:9 instead of 1:10) Technical Info: Caliber: .416 Weight: 422 grains Required Twist Rate: 1:13 or faster G1 Ballistic Coefficient: .801 G7 Ballistic Coefficient: .410 OAL: 1.976 Projection Length: 1.357