Product Description Winchester AutoBuck is an all-purpose buckshot load engineered to reliably function in most semi-automatic shotguns, as well as pump action, break action, and other platforms. The USAB121 delivers a 12-pellet payload of #1 buckshot at 1,325 fps, providing dense, uniform patterns and controlled impact for hunting, home defense, and target shooting. Each 5-round box features 12 Gauge, 2-3/4" shells loaded with 1 oz of hardened lead shot, offering the dependable performance and technical precision that Winchester has long been known for. Product Highlights High-Hit Probability: Packed with 3 additional pellets compared to traditional 9-pellet buck loads, delivering superior pattern density on every shot Stopping Power: #1 buckshot hits with authority, providing massive energy transfer and deep penetration on medium game Ultra-Reliable Cycling: Optimized payload and velocity specifically engineered for dependable functioning in semi-automatic shotguns Versatile Application: Suitable for hunting, home defense, and target shooting across a wide variety of shotgun actions including pump, break, and semi-auto Consistent Ignition: Centerfire primer and plastic case ensure uniform ignition and smooth cycling round after round Specs Brand: Winchester Ammo MPN: USAB121 UPC: 020892030176 Gauge: 12 Shell Length: 2-3/4 in Shot Size: #1 Buck Pellet Count: 12 Muzzle Velocity: 1,325 ft/s Shot Weight: 1 oz Shot Material: Lead Cartridge Case Material: Plastic Primer Style: Centerfire Lead Free: No Rounds per Box: 5 Application: Hunting, Home Defense, Target Shooting Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>