Winchesters Classic X207 Super-X 20g 2 3/4" # 7.5 only gets better with age. Designed and used for years on small game. Through proven design and manufacturing, the Winchester X207 20g Super-X provides consistent performance and tight patterns for accuracy on target. The Winchester X207 Super-X 20g is manufactured  by Olin Corporation at the Winchester Centerfire Operations Facility in Oxford, Mississippi and like all Winchester ammunition is subject to stringent quality control measures before being packaged and shipped out.