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Small arms ammunition pressure testing is used to establish standards for maximum average peak pressures of chamberings, as well as determining the safety of particular loads for the purposes of new load development. In metallic cartridges, peak pressure can vary based on propellant used, primers used, charge weight, projectile type, projectile ...
The high-velocity smokeless load was in a class with the .444 Marlin, [4] and its power exceeded the .348 [5] and .358 Winchester. [ 6 ] Winchester continued to offer the cartridge commercially until 1935 [ 1 ] and while it is still offered by some suppliers, due to its obsolescence and resultant obscurity, it is significantly more costly than ...
The .38-56 Winchester Center Fire / 9.59x53mmR or .38-56 Winchester cartridge was introduced in 1887 by Winchester for the Winchester Model 1886, [3] and was also used in the Marlin Model of 1895. Project and history
Winchester offered factory loaded .256 Magnum ammunition (and brass to reloaders) into the beginning of the 1990s. Winchester .256 factory loads used a 60 grain Open Point Expanding bullet at a MV of 2760 fps and ME of 1015 ft. lbs. from a 24-inch rifle barrel. That is about 500 fps faster than Winchester factory loads for the old .25-20 cartridge.
Announced to the public in early 1996 at an NRA convention, the 9×23mm Winchester cartridge was claimed to have the lowest recoiling load and still qualify for Major Power Factor designation in the IPSC. [2] [4] The IPSC Power Factor (PF) is equal to bullet weight in grains times muzzle velocity divided by 1,000. A PF of at least 175 was ...
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The original Winchester factory load consisted of a 300-grain (19 g) bullet at 1,420 ft/s (430 m/s) or a 330-grain (21 g) bullet at 1,380 ft/s (420 m/s). [ 1 ] With the introduction of superior cartridges designed for smokeless powder , the .40-72 Winchester became obsolete and was soon dropped from production.
List of Winchester Center Fire rifle cartridges.More commonly known as WCF, it is a family of cartridges designed by Winchester Repeating Arms Company. [1] There are many other Winchester cartridges that do not carry the WCF moniker, such as the .300 WSM. .270 Winchester, and .300 Winchester Magnum