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. Specifications for Winchester AA 410 Bore 1/2 oz 2.5" Shotgun Ammunition: Manufacturer: Winchester Gauge: .410 Shell Length: 2 1/2 in Application: Competitive Shooting, Sporting Clays Included Accessories: None Shotgun Shot Weight: 1/2 oz Shot Material: Lead Primer Style: Centerfire Cartridge Case Material: Brass Lead Free: No Shotgun Shot Type: Birdshot Gun Type: Shotgun Features of Winchester Winchester AA 410 Bore 1/2 oz 2.5" Shotgun Ammunition: AA Wads; Specially designed to reduce felt-recoil and improve pattern performance; Best-in-Class Primer and Powder; Consistent, dependable and clean burning; High-Strength Hull; Reliable performance and excellent reloadability; Proven Hard Shot; Tighter, hard-hitting patterns Package Contents: Winchester AA 410 Bore 1/2 oz 2.5" Shotgun Ammunition What is Winchester AA 410 Bore 1/2 oz 2.5" Shotgun Ammunition good for? Our customers suggest that it is best for sporting clays, competitive shooting.