#6.5x40mm
New Long-Range Wildcat for AR-15: the 6.5 x 40mm
Small Arms Defense Journal spent some significant ink profiling the development of a new AR-15 platform compatible long-range round. The 6.5x40mm (aka .264 Warrior Magnum) is not to be confused with the (relatively) common 6.5 Grendel. Developed by Mitch Shoffner, the 6.5x40mm provides performance close to 7.62x51mm NATO at short range and exceeds it at long ranges.
