The 6.5 Creedmoor ammo cartridge was originally designed and manufactured by Hornady Manufacturing Company in 2007. 6.5 Creedmoor is also referred to as 6.5mm Creedmoor, 6,5 Creedmoor, 6.5 CM, or 6.5 CRDMR. This centerfire rifle round is a variation of the 30 TC round, which itself was based on the 308 Win round. Designed for long-range target shooting, the 6.5 Creedmoor round is also good for hunting game.