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The data are all for barrels with a twist rate of 1 turn in 10 inches (250 mm) which is needed to stabilize the heaviest bullets. The higher muzzle velocities reported by Nosler for 165 grains (10.7 g) and heavier bullets use loads employing a slow-burning, double-base powder (Alliant Reloder 22). [citation needed]
Reloder 7 was the most popular of three cylindrical rifle powders introduced in 1965 to replace HiVel # 2. Each powder was blended from four different formulations dyed different colors. Production of the other two longer-grained powders, Reloder 11 and Reloder 21, was discontinued in 1972. [21] Blue Dot is a flake powder introduced in 1972.
Finnish smokeless powder. Smokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to black powder. Because of their similar use, both the original black powder formulation and the smokeless propellant which replaced it are commonly described as gunpowder.
Components of a modern bottleneck rifle cartridge. Top-to-bottom: Copper-jacketed bullet, smokeless powder granules, rimless brass case, Boxer primer.. Handloading, or reloading, is the practice of making firearm cartridges by manually assembling the individual components (metallic/polymer case, primer, propellant and projectile), rather than purchasing mass-assembled, factory-loaded ...
Smokeless powder is more efficient than black powder, and the cartridge cases could hold more powder. Smokeless powder loads, called "high speed" or "high velocity", were offered by the major ammunition makers, giving a typical velocity increase of 8% (1,200 feet per second (370 m/s) to 1,300 feet per second (400 m/s)) while still using the ...
Number 4831 was used to load navy anti-aircraft machine gun ammunition, and number 4895 was used to load United States service rifle ammunition. As these propellants became military surplus after the war, large quantities of different batches were blended together to make products with uniform average performance for sale to civilians.
The grain is the traditional measurement of the weight of bullets, black powder and smokeless powder in English-speaking countries. It is the unit measured by the scales used in handloading; commonly, bullets are measured in increments of one grain, gunpowder in increments of 0.1 grains. [12]
This led to the .22 Long in 1871, with the same bullet weight as the short but with a longer case and 5 gr (0.32 g) of black powder. This was followed by the .22 Extra Long in 1880, with a longer case and heavier bullet than the .22 Long.