Sierra outdoor master cartridges utilize innovative components and production processes that deliver an economical cartridge suitable for all purposes.Packed with hard-hitting terminal performance.Specially placed skives in the jacket around the tip of the bullet provide positive, uniform and controlled expansion.Cartridges are loaded with brass casings, making reloading with conventional equipment easy and economical.Specifications: 300 blackout 115 gr 2290 fps hollow point (hp) 20 bx/10 csCaliber: 300 BlackoutBullet Type: Hollow Point (HP)Bullet Weight: 115 grMuzzle Energy: 1338 ft lbsMuzzle Velocity: 2290 fpsRounds Per Box: 20Boxes Per Case: 10Application: HuntingCasing Material: BrassHazair: Yes