Description PRODUCT DETAILBrand: Hornady Category: Centerfire Rifle Rounds Caliber: 300 Blackout Model: Subsonic Bullet Weight: 190 gr Rounds Per Box: 20 Casing Material: Brass Bullet Type: Sub-X Muzzle Energy: 465 ft lbs Muzzle Velocity: 1050 fps Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.