The Winchester AA target load, introduced in 1965, is still regarded as the most legendary shotshell in the sport. The AA has helped millions of shooters break more clays and raise the bar for performance. Product Specifications Gauge: 12 Gauge Shot Material: Lead Shot Size: 8 Shot Type: Lead Rounds Per Box: 10 Muzzle Velocity: 1145 fps Shell Length: 2.75" Payload: 1 1/8 oz