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Military rifle propellant was manufactured in batches in a procedure taking about two weeks [7] from treating cotton linters with nitric acid, through curing the extruded grains to evaporate excess ether and alcohol, and finally coating the dried grains with DNT and graphite. Each batch had somewhat different reaction rates, so testing was ...
Heat-sensitive carbon fiber tubes coated with a UV curable powder coating. Powder coating is a type of coating that is applied as a free-flowing, dry powder.Unlike conventional liquid paint, which is delivered via an evaporating solvent, powder coating is typically applied electrostatically and then cured under heat or with ultraviolet light.
The .375/303 Westley Richards Accelerated Express, also known as the .375/303 Axite, is an obsolete medium bore rifle cartridge. It was a high velocity, rimmed, bottlenecked cartridge. It was loaded with Axite, a new smokeless powder developed by Kynoch and said by them to be "comparatively free from erosion and corrosion effects".
John Olin, the son of founder Franklin W. Olin, improved shotgun cartridge designs in the 1920s by using harder shot and progressive burning powder. [9] Western produced 3 billion rounds of ammunition in World War II, and the Winchester subsidiary developed the U.S. M1 carbine and produced the carbine and the M1 rifle during the war.
Modern express rifles are generally either single-shot or bolt-action rifle designs. Doubles are still made but are quite expensive; getting both barrels to shoot to the point of aim is a labor-intensive process. Single-shot rifles are not used as often when hunting dangerous game because follow-up shots are not made as quickly.
The .500/450 No. 1 Black Powder Express was a rimmed, bottlenecked cartridge designed for use with black powder. The cartridge was originally designed as a deer stalking round with a 260 gr (17 g) bullet, although later a 530 gr (34 g) loading was produced for target shooting. [1] [2]
However, some manufacturers continue to coat their bullets with various compounds, notably Teflon and molybdenum disulfide, as a protective layer against barrel wear. Not a lot of performance data is available for these bullets, although the 9mm offering was reputed to push a 100- grain (6.5 g) projectile at a velocity of 1,350 feet per second ...
POF-USA rifles feature NP3™ coatings and hard, corrosion resistant, nitride heat-treated barrels and gas blocks, eliminating any requirement for lubrication. [ 5 ] Additional innovations developed by POF-USA include the integral bolt-carrier key with the interface behind the cam pin, oversized heat-sink barrel nut, roller cam pin, and ...