This 8.6 Blackout Load features a Berger 300 grain Hybrid OTM Tactical Rifle Bullet. Berger Hybrid OTM (Open Tip Match) bullets utilize a hybrid olive, which blends tangent and secant designs to optimize efficiency and minimize sensitivity to seating depth. Our ballisticians have tuned this 8.6 BLK load to preform well in today's most popular firearms. The Gorilla Ammunition manufacturing process ensures consistency by pairing high end linear loading equipment with multi stage in-process inspections by highly trained machine operators with a final inspection of each and every round by our quality inspectors to ensure only ammunition that meets our rigorous specifications makes it into the box. These rounds are designed for bolt action 8inch, 12inch and 16inch 8.6BLK barrels with a 1:3 twist. Shooters can expect to shoot SUB- MOA groups at 100 yards with these loads. Specifications for Gorilla Ammunition 8.6 Blackout 300 Grain Bolt Action Only, Berger Hybrid Subsonic Brass Cased Rifle Ammunition: Manufacturer: Gorilla Ammunition Caliber: 8.6mm Blackout Number of Rounds: 20 Bullet Type: Solid Copper Bullet Weight: 300 grain Cartridge Case Material: Brass Muzzle Velocity: 1020 ft/s Application: Hunting, Self-defense Additional Features: Bolt Action Only, Berger Hybrid Subsonic Fastener/Closure Type: Slip On Seasonal/Temperature Use: All Seasons Age Group: Adults Features of Gorilla Ammunition 8.6 Blackout, Bolt Action Only, 300gr Berger Hybrid Subsonic Ammunition - 20 Round Box: Berger Hybrid OTM Subsonic - 20 Round Box Tuned 8.6 BLK Load for Popular Firearms Designed for Bolt Action 8, 12 and 16 8.6BLK Barrels SUB-MOA Groups at 100 Yards Muzzle Velocity: 1020 FPS Package Contents: Gorilla Ammunition 8.6 Blackout 300 Grain Bolt Action Only, Berger Hybrid Subsonic Brass Cased Rifle Ammunition What is Gorilla Ammunition 8.6 Blackout 300 Grain Bolt Action Only, Berger Hybrid Subsonic Brass Cased Rifle Ammunition good for? The manufacturer suggests that it is best for self-defense, hunting.