Australian Munitions .223 Remington 55 Grain Sierra BlitzKing Polymer Tipped Brass Cased Centerfire Rifle Ammo 20 Rounds. ADI is trusted by the worlds most discerning markspeople. The Sierra BlitzKing selected for this load is designed for explosive expansion in varmints and small game with the accuracy of the MatchKing bullets. The nose of the Sierra BlitzKing projectile is made of an acetyl resin compound and the sharp tip improves ballistic coefficient over small hollow point projectiles. The 55gr variant used in this cartridge features a boat tail to further increase the ballistic coefficient compared to flat-base design bullets of the same weight. Specifications for Australian Munitions ADI World Class .223 Remington 55 Grain Sierra BlitzKing Polymer Tip Brass Cased Centerfire Rifle Ammunition: Manufacturer: Australian Munitions Caliber: .223 Remington Number of Rounds: 20 Bullet Type: Boat Tail Tipped (BTT) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3277 ft/s Application: Varmint Small Game Package Type: Box Primer Style: Centerfire Lead Free: No Package Contents: Australian Munitions .223 Remington 55 Grain Sierra BlitzKing Polymer Tip Brass Cased Centerfire Rifle Ammunition What is Australian Munitions ADI World Class .223 Remington 55 Grain Sierra BlitzKing Polymer Tip Brass Cased Centerfire Rifle Ammunition good for? The manufacturer thinks that it is good for small game varmint.Australian Munitions 9332153003166: .223 Remington 55 Grain Sierra BlitzKing Polymer Tipped Brass Cased Centerfire Rifle Ammo 20 Rounds