Description SPECIFICATIONS:Brand: Federal Category: Centerfire Rifle Rounds Caliber: .223 Rem Model: Varmint & Predator Bullet Weight: 40 Grain Rounds Per Box: 20 Casing Material: Brass Application: Varmint Bullet Type: Hornady V-Max (VMX) Muzzle Energy: 1282 ft lbs Muzzle Velocity: 3800 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.