The 6mm Creedmoor, a necked-down version of the 6.5mm Creedmoor, uses lighter 6mm bullets while maintaining reduced recoil. It was first conceptualized by Lee Gardner in 2009 and later popularized by John Snow. Savage Arms offers rifles chambered in this caliber, and Hornady provides various ammunition options. Performance-wise, it closely resembles the .243 Winchester but excels with heavier bullets due to its design for longer projectiles and faster twist rates in rifles.
