The 6.5mm Grendel is undoubtedly an intermediate cartridge jointly made by British-American armorer Bill Alexander, aggressive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a small-recoil, significant-precision rifle cartridge specifically for the AR-15 System at medium/extended range (200–800 lawn). It really is an improved variation of the six.5mm PPC. The six.5mm Grendel cartridge was 1st unveiled in May possibly 2003 in the Blackwater Schooling Facility in North Carolina, the place it remained supersonic at one,200 yd (one,100 m) array and out-shot the 7.62mm NATO with only 50 percent the recoil. Because its introduction, it's got confirmed to get a versatile cartridge and is also now growing into other firearm design and style platforms together with bolt-action rifles as well as Kalashnikov method.
The title "Grendel" is inspired through the legendary monster antagonist in the Outdated English epic poem Beowulf. It absolutely was a trademark owned by Alexander Arms (Bill Alexander's organization in Radford, Virginia) and created at Radford Arsenal, till lawfully unveiled in 2010 for SAAMI standardization with collaboration from Hornady. The purpose in the 6.5mm Grendel structure was to create a powerful STANAG magazine-length cartridge to the AR-fifteen System that would reach 200–800 yd (180–730 m) and surpass the effectiveness with the indigenous five.56mm NATO/.223 Remington cartridge. Constrained from the dimension in the STANAG Publications, the Grendel's designers made a decision to utilize a shorter, larger sized-diameter case for greater powder volume although making it possible for Place for that extensive, streamlined, superior ballistic coefficient six.5mm (.264 cal.) bullets. Firing manufacturing unit-loaded ammunition with bullets starting from 90 to 129 grains (five.8 to 8.4 g), its muzzle velocity varies from 2,five hundred ft/s (760 m/s) with 129- and a hundred thirty-grain (eight.four g) bullets to two,900 ft/s (880 m/s) with 90 gr (five.eight g) bullets (related in velocity to a 77-grain (five.0 g) 5.56 mm spherical). Depending on their circumstance check here product and bullet pounds, six.5mm Grendel cartridges weigh fourteen.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 six.5mm PPC conditions. This diameter is larger sized than the five.56×45mm NATO, thereby necessitating using a non-conventional AR-fifteen bolt. The improved case diameter brings about a little reduction inside the magazine ammo capacities. A six.5mm Grendel magazine With all the same Proportions being a 30-spherical STANAG magazine will hold 26 rounds of Grendel ammunition.
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