For serious rifle competition, trust Winchester's Match ammunition. Winchester Supreme Match ammunition features proven MatchKing bullets and the hollow point boat tail design provides the precision match shooters demand, shot after shot. Spiveco/J4 jacket for unmatched concentricity and uniformity. Delivers reduced drag and improved downrange velocity and accuracy. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. Box of 20 rounds.