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6mm AR

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Covid-19
Type  Centerfire rifle
Designer  Robert Whitley
Case type  Rimless, bottleneck
Place of origin  United States
Parent case  6.5 Grendel
Bullet diameter  .243 in (6.2 mm)
6mm AR

The 6mm AR is a centerfire wildcat cartridge designed by Robert Whitley for long-range performance in an AR-15 rifle.

Description

The cartridge uses a 6.5 Grendel case that has been necked-down to accept a 6 mm (.243 in.) bullet.

The 6mm AR takes advantage of the wide variety of .243 in. caliber bullets. Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges.

It is similar to the 6PDK which also uses a 6mm bullet and a similar muzzle energy and case capacity to the 6mm AR and 6.5 Grendel, in a casing popular for the AR-15, a necked-down 6.8mm Remington SPC casing which does not need special magazines to fit the AR-15.

References

6mm AR Wikipedia


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