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Norma was started in 1902 by three Norwegian brothers from Nordre Land, Lars Enger (1850-1917), Johan Enger (1852-1925) and Ivar Enger (1863-1942), whose company L.A.Enger & Co acquired an ammunition factory in Raufoss and later moved to Kristiania (modern day Oslo) as Norma Projektilfabrik A/S (Norma projectile factory stock company) a few years earlier in 1895.
The .300 Norma Magnum, also known as .300 NM or 300 Norma, is a centerfire magnum rifle cartridge developed by Swedish ammunition manufacturer Norma Precision.The .300 Norma Magnum uses a .338 Norma Magnum parent case necked down to .30 caliber, [1] named to differentiate it from the older .308 Norma Magnum designed in 1960, and has begun to gain popularity among long-range shooters.
Aside from the manufacturing advantages, ball propellants metered more uniformly through powder measures used to load cartridges, had a longer storage life in loaded cartridges, [8] and reduced erosion of rifle barrels when those cartridges were fired. On the other hand, ball propellant loadings were more difficult to ignite, produced brighter ...
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 ...
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Redding Reloading, according to their catalog, offers custom made 3-die sets for the .400 Corbon. [23] Lubricating of the bottleneck case can be avoided when starting with .400 Corbon cases by using a carbide .45 ACP sizing die before using the .400 Corbon sizing die. Using a five-stage progressive reloading press makes this less of a chore.
The .338 Norma Magnum was originally developed as a long-range sport shooting wildcat cartridge by the American sport shooter Jimmie Sloan with the help of Dave Kiff, owner of Pacific Tool and Gauge, who made the reamers and headspace gauges. Barrels were supplied by Rock Creek Barrel Inc. Various twist rates were tried with 5R rifling.
The combustion products of smokeless powder are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder. [1] In addition, smokeless powder does not leave the thick, heavy fouling of hygroscopic material associated with black powder that causes rusting of the ...