Product DescriptionHornady Superformance rifle ammunition is engineered to deliver faster velocities and consistent hunting performance across a wide range of temperatures. This load is chambered in .257 Roberts +P and features Hornady's 117-grain SST (Super Shock Tip) polymer-tip bullet for flat trajectories, controlled expansion, and strong weight retention on medium game. Each box includes 20 rounds and is loaded in brass cases.Product Highlights .257 Roberts +P hunting ammo loaded with 117-grain SST (Super Shock Tip) polymer-tip bullets Superformance propellants designed to increase velocity while maintaining reliable performance 2945 fps muzzle velocity for flat-shooting, high-energy downrange performance Brass-cased, Boxer-primed, reloadable cartridges 20-round box-ideal for sight-in and hunting useSpecs Brand: Hornady Line/Series: Superformance Cartridge: .257 Roberts +P Bullet Weight: 117 grain Bullet Type: SST (Super Shock Tip) polymer tip Muzzle Velocity: 2945 fps Muzzle Energy: 2253 ft-lb Ballistic Coefficient (G1): 0.390 Sectional Density: 0.253 Case Type: Brass Primer: Boxer Reloadable: Yes Corrosive: No Lead Free: No Rounds Per Box: 20 Country of Manufacture: United States UPC: 090255813531 Manufacturer Part Number: 81353Disclaimer: 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.