This Winchester 7mm Mauser (7x57mm) Super-X ammunition features a 145 grain Power-Point bullet. It's a unique exposed soft nose jacketed bullet design that delivers maximum energy on target. Strategically placed notches around the jacket mouth improve upset performance and ensure uniform expansion for massive energy release. Since 1922, Winchester Super X ammunition has provided exceptional quality and outstanding performance for all types of hunter and shooters who rely on its time-proven dependability backed by legendary excellence. Proven Accuracy High Velocity Maximum Impact Rapid Controlled Expansion Product Specifications Caliber: 7mm Mauser (7x57mm) Product Line: Super X Bullet Weight: 145 gr Bullet Type: Power-Point; Jacketed Soft Point (JSP) Muzzle Velocity: 2660 fps Muzzle Energy: 2278 ft/lb Quantity: 20 Rounds per box