Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammo 20 Rounds. Through a collaboration between AAC and Remington these Remington Ammo are designed for use with a silencer to produce a quieter shooting experience. The rounds in this box of Remington Subsonic Ammo are designed with a tipped bullet and have an open tip with a flat base. This design spends less time winding and fumbling while delivering more go-bang performance every time. Stay stealthy while using this Remington 220 Grain Subsonic 300 AAC Blackout Ammo w/ OTFB to take out targets with ease. Specifications for Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition: Manufacturer: Remington Caliber: .300 AAC Blackout Number of Rounds: 20 Bullet Type: Open Tip Flat Base (OTFB) Bullet Weight: 220 grain Cartridge Case Material: Brass Muzzle Velocity: 940 ft/s Muzzle Energy: 432 ft-lbs Application: Target Package Type: Box Primer Style: Centerfire G1 Ballistic Coefficient: 0.68 Lead Free: No Features of Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition: All offerings are specifically designed for optimal performance when paired with a silencer Competitively priced below the leading competition FNEB & OFTB bullets to eliminate exposed lead on the heel to eliminate leading in silencer ports Tight velocity control to eliminate supersonic cracks Package Contents: Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition What is Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition good for? The manufacturer says that it is best for target.Remington 28430: Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammo 20 Rounds