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The .308 Norma Magnum (7.62×65mmBR) cartridge was created by Nils Kvale at Norma, Sweden. Like the larger .358 Norma Magnum it is based on a shortened 300 H&H magnum. [1] [2] It very closely resembled the wildcat .30-338 Magnum cartridge. [3] [2] Kvale designed a wildcat cartridge, the 8mm Kvale, in 1949.
Based upon a slightly shortened .308 Winchester cases with FTX bullets and special powder to approach .308 ballistics from a Marlin lever-action rifle. .308 Norma Magnum: 1960 [3] Sweden [8] 1 [2] R [10] 7.85×65.00mm [8] 3687 [10] 3640 [8] 1.975 84.0 [10] 0.308 [10] 65.00mm Belted. European cartridge designed for the US market. [3].308 ...
A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile caliber and case shoulder shape. [ clarification needed ] The term derives from the .357 Magnum , the original revolver cartridge with this designation.
The larger dimensions of the .300 Win Mag compared to the .308 Norma Magnum and .30-338 Winchester Magnum cartridges ensures that rifles chambered in such rounds can readily be rechambered to the .300 Win Mag, though the shorter neck of the longer round necessitates comparable bullets must be seated more deeply in the case.
Nils Kvale and Roy Weatherby were invaluable for Norma's success in the latter half of the 20th century. Kvale was a product developer for the company in the 1960s and introduced a number of new calibers such as the .308 Norma Magnum and .358 Norma Magnum to the market. Today, Norma has a yearly production of 100 million rounds in 110 calibers. [6]
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.
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The .358 Norma is what is known as a "short magnum," designed to work in long rifle actions; many .30-06 rifles such as the 1903 Springfield rifle have been rebarreled to the much-more powerful .358 Norma. [5] Norma's factory ammunition for the .358 Norma drives a 250-grain bullet at 2880 fps and produces more than 4,600 ft-lbs (foot-pounds) of ...