Hornady’s 6mm Advanced Rifle Cartridge is specifically designed to extend the range and improve the performance of an AR-15 rifle. (David M. Fortier)
April 30, 2026
By David M. Fortier
According to statements from Hornady a few years back, a specialized entity within the Department of Defense (“cough” Delta Force) requested a cartridge with certain capabilities. We can deduce these as greater effective range and better exterior and terminal ballistics with increased penetration over the 5.56x45mm. Basically, it sounds like they were looking for the benefits of the 7.62x51mm but in a smaller and lighter package. The result of this request led to Hornady introducing the 6mm...
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