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In C.I.P. regulated countries every rifle cartridge combination has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers. This means that 7×64mm Mauser chambered arms in C.I.P. regulated countries were, as of 2014, proof tested at 519.00 MPa (75,275 psi) PE piezo pressure.
The M1 ammo crate held a total of 1,000 belted or linked rounds packed in 4 M1 ammo boxes and the later M1A1 ammo crate held a total of 1,000 belted or 1,100 linked rounds packed in M1A1 ammo boxes. There were two .50 M2 ammo boxes to a crate (for a total of 220 belted or 210 linked rounds) with a volume of 0.93 cubic feet.
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.
An overview of 7mm caliber cartridges, their history, and uses in firearms.
The 7×61mm Sharpe & Hart Magnum belted cartridge (A.K.A. 7mm S&H Super [1]) was developed by Philip B. Sharpe and Richard (Dick) Hart in the 1950s. Some articles claim it was based on the .300 H&H Magnum case, [1] [2] while others claim it was based on the 7x61 MAS M1907 case.
In 2008, the most popular and useful .284 Winchester-case based cartridge was not the original, but rather the 6.5-284 Norma. This former wildcat, made by necking down the original Winchester .284 casing to 6.5mm (.264), was developed for long range target shooting where participants usually handload their ammunition.
The twist rate for the 7x64 is 1 in 8.66 inch against 1 in 10 inch for the 280 Remington. Nearly every European rifle producer offers the 7x64 as a standard caliber. The .280 Remington does, however, have a larger than expected number of European users in imported self-loading rifles such as those by Remington.
In November, 1943 it was the first plant to package ammo in vacuum-packed metal cans. In the Spring and Summer of 1944 it was employed in inspecting and repacking .45 ACP and .30 Carbine ammunition. EW Eau Claire Ordnance Plant (August 1942 to December 1943) – Eau Claire, Wisconsin a division of US Rubber Co.