Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammo 200 Rounds. This feature eliminates one of the most common problems in .300 AAC Blackout ammo - over-penetration. With no-shorts-no doubles the fun starts right here. UMC Ultra Max ammunition's unique feature is its ability to fire two projectiles without reloading. Both rounds leave the barrel with the same speed recoil and pressure characteristics you'd find in a match round. But UMC Ultra Max doesn't stop there. Its unique 220 grain open tip flat base ensures high weight retention and deep penetration downrange. Its flat base ensures uniform penetration and energy transfer giving you a big bang for your buck. Specifications for Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammunition: Manufacturer: Remington Caliber: .300 AAC Blackout Bullet Type: Open Tip Flat Base (OTFB) Bullet Weight: 220 grain Cartridge Case Material: Brass Muzzle Velocity: 940 ft/s Application: Target Shooting Package Type: Box Primer Style: Centerfire Lead Free: No Features of Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammo First quality factory fresh components for reliable feed function and performance Package Contents: Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammunition What is Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammunition good for? The manufacturer suggests that it is suitable for target shooting.Remington 20109: .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammo 200 Rounds