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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]
List of rifle cartridges, by primer type, calibre and name. From left to right: ... .284 Winchester.30 caliber – .39 caliber.30 Carbine.30 Newton
450 Bushmaster, Uses .284 Winchester cases. Cut the length to 1.700" to form a straight-wall cartridge, from 2.170". The .284 Winchester case is very similar to the .308, however, the .284 case has a body diameter of 0.500", and the .308 case has a body diameter of 0.471". Both share an identical head/rim.
The 6.5mm Creedmoor (6.5×48mm), [6] designated 6.5 Creedmoor by SAAMI, 6,5 Creedmoor by the C.I.P. [4] is a centerfire rifle cartridge introduced by Hornady in 2007. [7]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.
This is a list of firearm cartridges which have bullets of a caliber between 6 millimetres (0.236 in) and 6.99 millimetres (0.275 in). Length refers to the cartridge case length; OAL refers to the overall length of the cartridge; Measurements are in millimeters then inches, i.e. mm (in).
Size comparison of some 6.5 mm cartridges, left to right: .264 Winchester Magnum, 6.5×55mm Swedish, 6.5×52mm Carcano, .260 Remington, 6.5mm Creedmoor, 6.5mm Grendel. The .260 Remington being a .264 caliber (6.5 mm) has certain advantages: the bullets have good sectional density (penetrating ability) and a good selection of bullet weights.
6.5×52mm Mannlicher–Carcano, Italian military cartridge; 6.5×53mmR, Dutch and Romanian military cartridge; 6.5×54mm Mannlicher–Schönauer, Greek military cartridge; 6.5×55mm, Swedish-Norwegian military cartridge; 6.5×68mm, rebated rim bottlenecked centerfire rifle cartridge; 6.5-284 Norma, wildcat cartridge
The .264 Winchester Magnum is a cartridge which was standardized by SAAMI, which published recommended specifications for the cartridge. SAAMI recommends a six groove barrel with a rate of twist of one revolution in 9 in (230 mm), a bore diameter of .256 in (6.5 mm) and a groove diameter of .264 in (6.7 mm) with each groove having a width of 0. ...