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The measurement .303 inches (7.7 mm) is the nominal size of the bore measured between the lands which follows the older black powder nomenclature. Measured between the grooves, the nominal size of the bore is .311 inches (7.9 mm). Bores for many .303 military surplus rifles are often found ranging from around .309 to .318 inches (7.8–8.1 mm ...
The .303/22, sometimes known as the .22/303, is a wildcat centrefire rifle cartridge based on the .303 British, necked down to fire a .224 projectile, originating in Australia in the 1930s as a cartridge for sporterised rifles, particularly on the Lee–Enfield action. Similar versions also appeared in Canada around the same time. [3]
Shotguns are classed according to gauge, a related expression. The gauge of a shotgun refers to how many lead spheres, each with a diameter equal to that of the bore, that amounts to one pound (454 g (1.0 lb)) in weight. In the case of a 12-gauge (18.5 mm) shotgun, it would take 12 spheres the size of the shotgun's bore to equal a pound. [12]
The .303 Savage is a rimmed, .30 caliber rifle cartridge developed by the Savage Arms Company in 1894 which was designed as a short (as short as the .30-30 Winchester
.276 Enfield (7×60mm) rimless bottlenecked rifle cartridge for which the action was originally designed.303 British (7.7×56mmR) rimmed cartridge for which the P14 action was adapted During the Second Boer War the British were faced with accurate long-range fire from Mauser rifles, model 1893 and 1895, in 7×57mm caliber.
The cartridge was propelled by 47 gr (3.0 g) of cordite size 3 at a muzzle velocity of 2,150 ft/s (660 m/s). [12] In 1916 a tracer round was developed for the .577/450, the 295 gr (19.1 g) bullet comprised a cupronickel envelope containing 91 gr (5.9 g) of tracer element. The round was propelled by 40 to 50 gr (2.6 to 3.2 g) of cordite at a ...
.303 British.303 Magnum.303 Savage.375/303 Westley Richards Accelerated Express.307 Winchester.308 Marlin Express.308 Norma Magnum.308 Winchester.308×1.5" Barnes.310 Cadet.318 Westley Richards.32 Remington.32 Winchester Self-Loading.32 Winchester Special.32-20 Winchester.32-40 Ballard.32-40 Winchester.325 Winchester Short Magnum.327 Federal Magnum
The 303-cubic-inch (5.0 L) engine had hydraulic lifters, an oversquare bore:stroke ratio, a counterweighted forged crankshaft, aluminum pistons, floating wristpins, and a dual-plane intake manifold. The 303 was produced from 1949-1953. Bore was 3.75 in (95 mm) and stroke was 3.4375 in (87.31 mm).