The Hornady Superformance 300 Win. Mag. 165 gr CX from the Superformance series brings high-velocity magnum performance to hunters and long-range shooters who demand reliable copper-alloy expanding terminal performance, with the CX bullet profile delivering consistent expansion and weight retention for deep penetration on big game; with a listed muzzle velocity of 3260 fps and muzzle energy of 3893 ftlbs this 300 Winchester Magnum load pairs ideal trajectory and downrange energy for mountain hunts, plains work, and precision magnum shooting, and it runs in standard magnum actions using brass casings for reliable feeding and extraction, while its ORM-D hazardous air classification and United States origin give range officers and outfitters clear handling and logistics expectations; whether youre dialing for elevated shots at extended yardages or seeking dependable terminal performance in thick cover, the Superformance CX load balances speed, energy, and the copper alloy expanding bullet design in a package that integrates with modern magnum rifles and optics setups for real-world hunting and field-use scenarios.