Multi-phase groove technology engages the shot cup and guides the pellets into a tight and consistent pattern, shot after shot. Extend your effective range with lethal patterns that reach out farther. Rated for HEVISHOT, Winchester, Long Beard XR, Federal Premium 3rd Degree and other high-performance turkey loads. Heat-treated steel for increased strength and durability with powerful turkey loads. CNCmachined for optimum precision. Polished end face for better seating and sealing, providing maximum power without pressure loss