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At the start of the 20th century the famous German gun and ammunition designer Wilhelm Brenneke (1865–1951) was experimenting with the engineering concept of lengthening and other dimensional changes regarding standard cartridge cases like the M/88 cartridge case, then used by the German military in their Mauser Gewehr 98 rifles, to obtain ...
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.
Voluntary Industry Performance Standards for Pressure and Velocity of Centerfire Rifle Ammunition for the Use of Commercial Manufacturers (PDF). SAAMI. December 14, 2015. Archived from the original (PDF) on March 21, 2021
This ammunition was also produced in a B-v high-velocity or "v" ammunition variant that added 110 m/s (361 ft/s) muzzle velocity to the normal B variant. [ 40 ] All verbesserte (v) ("improved") high-velocity ammunition variants were loaded to a 50 MPa (7,252 psi) higher operating pressure than the corresponding normal ammunition variants.
Factory loadings. Number of manufacturers producing complete cartridges - e.g. Norma, RWS, Hornady, Winchester, Federal, Remington, Sellier & Bellot, Prvi Partizan. May be none for obsolete and wildcat cartridges. H/R: Handgun (H) or rifle (R) - dominant usage of the cartridge (although several dual-purpose cartridges exist)
.358 Norma Magnum.358 Winchester.360 Buckhammer.360 No 2 Nitro Express.360 No 5 Rook.369 Nitro Express.375 CheyTac.375 Dakota.375 Flanged Nitro Express.375 H&H Magnum.375 Remington Ultra Magnum.375 Ruger.375 SOCOM.375 SWISS P.375 Viersco Magnum.375 Weatherby Magnum.375 Whelen.375 Winchester.376 Steyr.378 Weatherby Magnum.38 Special.38-40 Winchester
Norma manufactured commercial ammunition, but later discontinued the line. While the 7×61mm S&H proved to be popular, mostly outside of the United States, [1] it led was overshadowed once the 7mm Remington Magnum was released. [2]
During the Second Boer War in South Africa, British authorities were obliged to re-evaluate rifle and ammunition design and tactics after facing Boer sharpshooters and snipers armed with Mauser Model 1893 rifles and Mauser Model 1895 rifles firing 7×57mm rounds with withering effectiveness, easily outranging the .303 British cartridge as ...