Product Description Winchester Big Bore 10mm Auto ammunition is trusted to perform in critical personal defense situations and hunting applications. Loaded with a 200-grain Semi-Jacketed Hollow Point (SJHP) projectile, it is designed to control and delay expansion for deep, effective terminal performance while delivering massive shock and lethal wound channels. Packaged in a convenient 20-round box, Big Bore is built for dependable function when it matters most. Product Highlights 200-grain Semi-Jacketed Hollow Point (SJHP) bullet designed to control and delay expansion Engineered to produce massive shock and lethal wound channels for defense and hunting use 10mm Auto loading suitable for demanding handgun applications Dependable performance for critical personal protection and hunting scenarios 20 rounds per box for easy carry and range-ready convenience Specs Brand: Winchester Ammunition Model/Line: Big Bore Caliber: 10mm Auto Bullet Weight: 200 gr Bullet Type: Semi-Jacketed Hollow Point (SJHP) Rounds Per Box: 20 Muzzle Velocity: 1175 fps Muzzle Energy: 613 ft-lbs Country of Manufacture: USA UPC: 020892233058 Manufacturer Part Number: X10MMBB 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.