The 14.5 mm JDJ was created by SSK Industries of Wintersville, Ohio. It uses the .50 BMG case with the neck opened up to accept a .585 in (14.9 mm) bullet. It fires the 1173 grain (76 g) bullet at 2700 ft/s (820 m/s) with the fire-formed load. The Barnes 750 grain (49 g) bullet can also be loaded to 3000 ft/s (910 m/s). It has a destructive device exemption. Only rifles chambered for the .50 BMG can be converted to this caliber.


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