The six.5mm Grendel is undoubtedly an intermediate cartridge jointly built by British-American armorer Monthly bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, like a low-recoil, high-precision rifle cartridge especially for the AR-15 System at medium/extended range (two hundred–800 garden). It's an enhanced variation in the six.5mm PPC. The 6.5mm Grendel cartridge was to start with unveiled in Could 2003 at the Blackwater Teaching Facility in North Carolina, in which it remained supersonic at one,200 yd (one,100 m) selection and out-shot the seven.62mm NATO with only fifty percent the recoil. Since its introduction, it's proven being a versatile cartridge and is also now growing into other firearm design and style platforms together with bolt-action rifles plus the Kalashnikov method.
The title "Grendel" is encouraged through the legendary monster antagonist in the Outdated English epic poem Beowulf. It absolutely was a trademark owned by Alexander Arms (Bill Alexander's firm in Radford, Virginia) and created at Radford Arsenal, till legally produced in 2010 for SAAMI standardization with collaboration from Hornady. The goal in the six.5mm Grendel structure was to build an efficient STANAG magazine-size cartridge for that AR-fifteen System that may achieve two hundred–800 yd (one hundred eighty–730 m) and surpass the general performance from the native 5.56mm NATO/.223 Remington cartridge. Constrained with the dimension with the STANAG Journals, the Grendel's designers made a 6.5 Grendel Hunting Ammo decision to utilize a shorter, much larger-diameter situation for increased powder volume even though allowing for space for the lengthy, streamlined, large ballistic coefficient 6.5mm (.264 cal.) bullets. Firing factory-loaded ammunition with bullets ranging from 90 to 129 grains (5.eight to eight.four g), its muzzle velocity differs from two,500 ft/s (760 m/s) with 129- and one hundred thirty-grain (8.4 g) bullets to 2,900 ft/s (880 m/s) with ninety gr (five.eight g) bullets (very similar in velocity to your seventy seven-grain (5.0 g) 5.56 mm spherical). Based upon their circumstance product and bullet pounds, six.5mm Grendel cartridges weigh 14.7 to 17.eight grams (227 to 275 gr).
The situation head diameter on the Grendel is the same as that from the 5.six×39mm (.220 Russian), seven.62×39mm and 6.5mm PPC conditions. This diameter is larger sized when compared to the five.56×45mm NATO, therefore necessitating the use of a non-regular AR-15 bolt. The amplified scenario diameter leads to a small reduction in the journal ammo capacities. A 6.5mm Grendel journal While using the exact same Proportions being a 30-spherical STANAG journal will hold 26 rounds of Grendel ammunition.
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