Berger Bullets Target 223 Remington 73gr BT Centerfire Rifle Ammo - 20 Rounds - The Berger .223 Remington 73 Grain Boat Tail Target ammo was designed to offer both bolt-gun and gas-gun operators a premium round that outperforms current 223 long range rounds. The 73 Grain BT Target projectile has been known in competitive shooting and Mil/LE circles as the "test-bullet for AR platforms. The competitive shooter's adage has always been "If it won't shoot a 73 Grain Berger, it likely won't shoot. Period.Function tested and competition proven, the Berger .223 Remington, 73 Grain BT Target is the target round to beat. Minimum Twist: 1:9in; Best Concentricity Available; Consistent Core;