Winchester Super-X Shotshells are hard-hitting and reliable. From deer to upland birds, there is a Super-X Shotshell for almost every quarry. First introduced in 1922, Super-X ammunition delivers better, and more dependable knock-down power. Made using precise manufacturing processes and high quality components, this ammunition has become the ammunition to rely and depend on for whatever your need. Powerful high brass performance offers long-range knock-down The one piece hinged wad guarantees consistent, tight patterns and reduced felt-recoil. Winchester’s famous 209 Primer and clean burning powder ensure reliable ignition and consistent velocity, round after round.