Winchester AA-HS 12ga 2-3/4" / 69mm once fired cases
The NEW Winchester AA hull (refered to as High Strength or "HS" by Winchester) is a three-piece Reifenhauser type design. It consists of a brass head, an inner tapered base resembling a plastic cup and a straight length of extruded plastic tubing. The cases have a preformed 8 point crimp.
