Federal Premium SUBSONIC .300 AAC Blackout 220 Grain Open Tip Match Centerfire Rifle Ammo 20 Rounds. The cartridges deliver superior accuracy reliability and cleanliness in suppressed firearms thanks to carefully selected propellants bullet weights and profiles. The subsonic loading for the 300 Blackout not only lends itself to better noise reduction through the suppressor it also reduces it by avoiding the ballistic crack inherent to supersonic loads. In addition special clean-burning powders to make it easy for shooters to clean their weapons other conventional ammunition can cause severe fouling in suppressed firearms. Specifications for Federal Premium SUBSONIC .300 AAC Blackout 220 Grain Open Tip Match Centerfire Rifle Ammunition: Manufacturer: Federal Caliber: .300 AAC Blackout Number of Rounds: 20 Bullet Type: Open Tip Match (OTM) Bullet Weight: 220 grain Cartridge Case Material: Brass Muzzle Velocity: 1000 ft/s Application: Target Shooting Package Type: Box Primer Style: Centerfire Lead Free: No Features of Federal Premium American Eagle .300 AAC Blackout 220gr. OTM Rifle Ammo - 20 Rounds Bullet weights and profiles carefully selected for suppressed firearms Clean burning powders for easier cleanup Lower cost for volume shooting Reliable function feeding and ignition Federal brass cases Package Contents: Federal Premium SUBSONIC .300 AAC Blackout 220 grain Open Tip Match Centerfire Rifle Ammunition What is Federal Premium SUBSONIC .300 AAC Blackout 220 Grain Open Tip Match Centerfire Rifle Ammunition good for? The manufacturer says that it is suitable for target shooting.Federal AE300BLKSUP2: Premium SUBSONIC .300 AAC Blackout 220 Grain Open Tip Match Centerfire Rifle Ammo 20 Rounds