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A headstamp is the marking on the bottom of a cartridge case designed for a firearm. It usually tells who manufactured the case. Military headstamps usually have only the year of manufacture . The left cartridge's headstamp says "FC 223 REM" which means that it was made by Federal Cartridge Co. and it is in the caliber .223 Remington. The ...
It remains a very popular sporting round, with ammunition produced by all major manufacturers. It has a 68.2 grains (4.43 ml) H 2 O cartridge case capacity. The exterior shape of the case was designed to promote reliable case feeding and extraction under extreme conditions for both bolt-action rifles and machine guns.
The original Eley-Boxer cartridge case was made of thin-coiled brass—occasionally these cartridges could break apart and jam the breech with the unwound remains of the case upon firing. Later the solid-drawn, centerfire cartridge case, made of one entire solid piece of tough hard metal, an alloy of copper, with a solid head of thicker metal ...
A headstamp is the markings on the bottom of a cartridge case designed for a firearm. It usually tells who manufactured the case. It usually tells who manufactured the case. If it is a civilian case it often also tells the caliber: if it is military, the year of manufacture is often added.
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 cases tend to have similar case capacity when measured (case capacities have been observed to vary by as much as 2.6 grains (0.17 ml)), although the shoulder profile and neck length are not the same and 5.56×45mm NATO cartridge cases tend be slightly thicker to accommodate higher chamber pressures.
In 1964, a 2nd pattern of the small arms ammunition case were introduced that was missing the plastic stiffener in front. This allowed the case to carry three M14 magazines side-by-side rather than two. In 1965, slightly modified small arms ammunition cases came into service to coincide with the adoption of the 5.56×45mm NATO M16 rifle. Four ...
The term belted magnum [1] [better source needed] or belted case refers to any cartridge, but generally a rifle cartridge, with a shell casing that has a pronounced "belt" around its base that continues 2–4 mm (0.079–0.157 in) past the extractor groove.