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The 6.5mm Grendel is an intermediate cartridge jointly designed by British-American armorer Bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a low-recoil, high-precision rifle cartridge specifically for the AR-15 platform at medium/long range (200–800 yard).
6.5mm Grendel :The Grendel uses the same head and rim from the .220 Russian and the 7.62x39 with a rim diameter of 0.441-0.449. The 6.5 Grendel bullets have a true diameter of 6.71mm / 0.264" and the 6.5 Grendel case can be formed from abundant 7.62x39 cases with a neck re-sizing die, and fire-forming a slight change to the shoulder, if the ...
The 6.5mm Creedmoor designated as 6.5 Creedmoor by SAAMI, and as 6,5 Creedmoor by the C.I.P. [4] is a centerfire rifle cartridge introduced by Hornady in 2007. [6]It was developed by Hornady senior ballistics scientist Dave Emary in partnership with Dennis DeMille, the vice-president of product development at Creedmoor Sports, hence the name.
Left: 6.5mm Grendel. Right: 6.5-300 Weatherby Magnum. Type: Rifle: ... When bullets with high ballistic coefficients are used, trajectories are extremely flat ...
6.5 Grendel was originally designed for the AR15 class of firearms, and therefore has power level (pressure) ratings that are within the limits of that class. As such, the C.I.P.-listed pressure levels for the 6.5 Grendel are lower than those listed by the C.I.P. for the 7.62×45mm (C.I.P.: 430.00 MPa
Developed as an intermediate cartridge between 223 and 308 with superior external ballistics in a smaller package. 6.5mm Creedmoor: 2012 [8] US [8] 12 [23] R [4] 6.72×48.77mm [8] 3050 [4] 2493 [4] 1.635 47.0 [10] 0.264 [10] 0.585 [5] 48.77mm Uses the same bolt and magazines as 308 rifles, with higher velocity, accuracy, and lower recoil. 6.5× ...
Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges. [2] It is similar to the 6PDK which also uses a 6.2 mm bullet and a similar muzzle energy and case capacity to the 6mm AR and 6.5 Grendel, in a casing somewhat popular [3] for the AR-15, a necked-down 6.8mm Remington SPC casing. [citation needed]
The 6.5-284 has been used extensively in benchrest competitions and is known as an extremely accurate long range round. Using an improved version of the 6.5-284, Rich DeSimone set a 1,000-yard (914.4 m) world record with a 1.564-inch (39.73 mm) group. [4]