Underwood Ammo Rifle Ammunition Features The Underwood .300 AAC Blackout load uses a 125 grain polymer tipped spitzer bullet a boat tail design that improves ballistic efficiency and helps the round retain velocity downrange better than a flat base projectile. At a muzzle velocity of 2250 feet per second and 1405 foot pounds of energy this load is built to deliver dependable performance from the shorter barrels commonly found on .300 Blackout rifles and pistols. The polymer tip aids in initiating expansion on impact which matters for shooters using this round for hunting or defensive applications. Consistent velocity and energy figures like these come from careful attention to powder charge and bullet selection during loading. Each box contains 20 rounds housed in brass cases giving handloaders the option to collect and reload spent brass after a range session. The .300 AAC Blackout cartridge was designed to function reliably in both AR-15 pattern rifles and pistols making this load versatile across a range of platforms chambered for the cartridge. Whether used for target practice training or hunting this Underwood load offers a consistent well-documented ballistic profile that shooters can rely on. It is a solid choice for anyone looking to stock up on dependable .300 Blackout ammunition. Underwood Ammo Rifle Ammunition Specifications Manufacturer: Underwood Ammo Model: Rifle Ammunition Caliber: .300 AAC Blackout Bullet Weight: 125 Grain Bullet Type: Polymer Tipped Boat Tail Rounds Per Box: 20 Muzzle Velocity: 2250 FPS Muzzle Energy: 1405 ft-lbs Available At: GrabAGun