Description PRODUCT DETAIL:Cartridge: .308 Winchester Bullet: 155Gr FTX Muzzle Velocity: 2785 fps Muzzle Energy: 2669 ft/lbs Sectional Density: .223 Ballistic Coefficient (G1): .313 Application: Personal Defense Number of Rounds: 20 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.