Winchester Super-X Features The Winchester Super-X load in .223 Rem uses a 55 grain boat tail hollow point bullet designed to expand quickly on varmint-sized game while maintaining a flat trajectory at longer ranges. A muzzle velocity around 3240 feet per second and roughly 1282 foot-pounds of energy give this load the speed and impact needed for consistent humane kills on small predators and varmints. The boat tail design improves ballistic coefficient helping the bullet retain velocity and resist wind drift better than a flat-base projectile of similar weight. This combination of speed and bullet design makes the load well suited to both dedicated varmint hunting and high-volume target shooting. Each case is loaded with brass cases and boxer primers both of which are reloadable letting handloaders recover spent brass for future reloading projects rather than discarding it after a single use. Manufactured in the USA this ammunition reflects Winchester s Super-X line a product family that has delivered dependable performance for shooters since 1922. The 500-round case format gives varmint hunters and high-volume shooters enough ammunition to get through an extended range session or a full season without needing to restock mid-way. The Winchester Super-X .223 Rem 55 grain BTHP load is available for sale at GrabAGun for shooters who demand consistent accuracy round after round. Winchester Super-X Specifications Manufacturer: Winchester Model: Super-X Caliber: .223 Rem Bullet Type: BTHP Bullet Weight: 55 Grain Velocity: 3240 FPS Energy: 1282 ft-lbs Rounds Per Box: 20 Primer: Boxer Reloadable: Yes Country of Origin: USA Available At: GrabAGun