Winchester Ammunition AA Supersport Sporting Clay, 410 Gauge 2.5, #8.5 Shot, 1/2 oz, Shotshell, 25 Round Box AASC4185 Since 1965, AA has been recognized as one of the finest quality target shotshells ever developed, continuing the Winchester tradition of legendary excellence with unparalleled target-breaking performance that revolutionized the target shooting and reloading industry.