|Place of origin||United States|
|Parent case||.50 BMG|
|Bullet diameter||.585 in (14.9 mm)|
It uses the .50 BMG case with the neck opened up to accept a .585 in (14.9 mm) bullet. It fires the 1,173-grain (76.0 g) bullet at 2,700 ft/s (820 m/s) with the fire-formed load. The Barnes 750-grain (49 g) bullet can also be loaded to 3,000 ft/s (910 m/s). It has a destructive device exemption. Only rifles chambered for the .50 BMG can be converted to this caliber.
This article needs additional citations for verification. (September 2010) (Learn how and when to remove this template message)