Search results
Results from the WOW.Com Content Network
The 7.62 mm designation refers to the internal diameter of the barrel at the lands (the raised helical ridges in rifled gun barrels). The actual bullet caliber is often 7.82 mm (0.308 in), although Soviet weapons commonly use a 7.91 mm (0.311 in) bullet, as do older British (.303 British) and Japanese (7.7×58mm Arisaka) cartridges.
The .308 Norma Magnum (7.62×65mmBR) cartridge was created by Nils Kvale at Norma, Sweden. Like the larger .358 Norma Magnum it is based on a shortened 300 H&H magnum. [1] [2] It very closely resembled the wildcat .30-338 Magnum cartridge. [3] [2] Kvale designed a wildcat cartridge, the 8mm Kvale, in 1949.
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 308 Winchester and 7.62X51 are identical cartridgesThe cartridege was developed in the USA as a commercial round with an Imperial measurement ie .308 inches.The cartridge was adopted in Europe where all military calibers- even in the UK who still use miles instead of kilometres- all calibers are metric hence 7.62x51 millimetres.
Although originating from an identical preceding series of experimental cartridges, the commercial 1952 .308 Winchester and the military 1954 7.62×51mm NATO chamberings have evolved separately but remain similar enough that they can be loaded into rifles chambered for the other round, but the .308 Winchester cartridges are typically loaded to ...
The confusion is based on difference in rounding out (rounding up or rounding down) the case length (case length of our cartridges is 53.65-0.2 mm). The letter "R" indicates a case rim. After Russia’s joining European Commission (ПМК) a definite name of this cartridge was determined – 7,62×54R.
The overall case length after the shortening and re-sizing is 1.565". The cartridge was designed to use .308" diameter bullets in weights of 110 to 150 grains, with a standard twist rate of 1-12". [1] Wilson Combat states that heavier bullets can be used in a barrel with a 1-8" twist rate for subsonic loads. [4]
The HK 940, a hunting rifle long action variant of the Heckler & Koch SL7, designed for using cartridges exceeding the 7.62×51mm NATO/.308 Winchester 2.8 in (71.12 mm) overall length like the .30-06 Springfield or 7×64mm and lacked the wooden handguard of the SL7 and was equipped with a longer barrel with integral flash hider/compensator ...