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The Winchester Model 54 is a bolt-action rifle manufactured by the Winchester Repeating Arms Company. The 54 was the first successful production run civilian centerfire bolt action for Winchester. [1] Using a Mauser 98 [2]-type action, the Model 54 was produced until 1936 when, with some modifications, it was reintroduced [3] as the Winchester ...
The first references to the possible use of polymers in the manufacture of casings come from the early 1950s. One of the earliest is the patent filed by Jack W. Roske in 1950 [1] and the idea was to use a metal cup joined with a polymer shell "that will be converted to gas during the firing phase to assist in propelling the projectile and thereby permit reduction in the use of the propelling ...
The 7.62×54mmR has a 4.16 mL (64 gr H 2 O) cartridge case capacity. The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt-action rifles and machine guns alike, under challenging conditions. 7.62×54mmR maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm). [5]
The pre-war headstamp has the 1- or 2-letter code for the brass supplier of the cartridge case at 6 o'clock, the 2-digit year the cartridge case was produced at 12 o'clock, the lot number of the propellant at 9 o'clock, and the 2-digit year the finished cartridge was assembled at 3 o'clock. The brass suppliers or cartridge manufacturers would ...
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]
The ArmaLite AR-18 is a gas-operated rifle chambered for 5.56×45mm NATO ammunition.The AR-18 was designed at ArmaLite in California by Arthur Miller, Eugene Stoner, George Sullivan, and Charles Dorchester in 1963 as an alternative to the Colt AR-15 design, a variant of which had just been selected by the U.S. military as the M16.
The 7.5×54mm French has 3.76 ml (58.0 grains H 2 O) cartridge case capacity. 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. 7.5×54mm French maximum C.I.P. [4] cartridge dimensions. All sizes in millimeters (mm).
Many such cartridges were designated by a three-number system (e.g., 45–120–3 1 ⁄ 4 Sharps: 45-caliber bore, 120 grains of (black) powder, 3 1 ⁄ 4-inch long case). Other times, a similar three-number system indicated bore (caliber), charge (grains), and bullet weight (grains). The 45-70-500 Government is an example.