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Firing factory-loaded ammunition with bullets ranging from 90 to 129 grains (5.8 to 8.4 g), its muzzle velocity varies from 2,500 ft/s (760 m/s) with 129- and 130-grain (8.4 g) bullets to 2,900 ft/s (880 m/s) with 90 gr (5.8 g) bullets (similar in velocity to a 77-grain (5.0 g) 5.56 mm round). Depending on their case material and bullet weight ...
The 6.5 PRC (Precision Rifle Cartridge) was initially designed by George Gardner of GA Precision and Hornady in 2013 and released at the 2018 SHOT Show. It is essentially a more powerful and flatter-shooting version of the 6.5mm Creedmoor and uses the same bullet, but not the same cartridge case. [13] [14]
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.
The Double Tap achieves 2,825 ft/s (861 m/s) and 4,700 ft⋅lb (6,400 J) with a 270-grain Barnes TSX from a 23-inch barrel Ruger 77 African. The .375 Ruger's greater case capacity, and the "short fat" cartridge efficiency lead to increases in the neighborhood of 150 to 200 fps over the .375 H&H Magnum cartridge.
With a 165-grain bullet, the 6.8 Western is capable of matching the muzzle velocity of a .270 Winchester loaded with a 150-grain bullet. The higher ballistic coefficient of the 6.8 Western results in a flatter trajectory at distances beyond 600 yards, which may be controversial for hunting purposes. [8]
Although, the solid .308 bullets that are lighter than 150 gr do not have optimum ballistic coefficients (hollow-point bullets can have an optimum profile at a slightly lower weight than 150 gr). Any cartridge candidates for the AR-15 family of rifles must be limited to a cartridge over all length (COAL) of 2.260 inches, in order to fit in the ...
The .308 Winchester has a 3.64 mL (56 gr H 2 O) cartridge case capacity. [9] The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt-action rifles and machine guns alike, under extreme conditions. .308 Winchester maximum C.I.P. cartridge dimensions. All dimensions in millimeters (mm) and inches.
The RPR was originally announced in the following calibers and configurations: .308 Win. with 1:10 twist, 20 in (51 cm) barrel, weighing 9.7 lb (4.4 kg) 6.5 Creedmoor with a 1:8 twist, 24 in (61 cm) barrel, weighing 10.6 lb (4.8 kg)