Product DescriptionHSM Game King rifle ammunition is built around the proven Sierra GameKing bullet line, with components matched to help maximize accuracy and downrange performance. This .300 Remington Ultra Mag (300 RUM) load features a 150-grain Sierra GameKing Spitzer Boat Tail projectile for a sleek profile and reliable terminal performance, making it well-suited for hunting applications. Each box contains 20 rounds in a brass case.Product Highlights Loaded with a 150 gr Sierra GameKing Spitzer Boat Tail bullet for strong ballistic performance .300 Remington Ultra Mag (300 RUM) centerfire rifle ammunition for hunting use Precision-matched components designed to maximize accuracy and consistency Brass casing for dependable feeding and potential reloadability 20 rounds per box (20 boxes per case)Specs Brand: HSM Model/Line: Game King Manufacturer Part Number: 300RUM11N UPC: 810742023140 Cartridge/Caliber: .300 Remington Ultra Mag (300 RUM) Bullet Weight: 150 gr Bullet Type: Sierra GameKing Spitzer Boat Tail (soft point) Muzzle Velocity: 3,390 fps Muzzle Energy: 3,829 ft-lbs Case Material: Brass Primer: Boxer Corrosive: No Reloadable: Yes Rounds Per Box: 20 Boxes Per Case: 20 Country of Manufacture: USA (Made in Montana)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.