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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.
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 .358 Norma Magnum is a rifle cartridge introduced in 1959 by Norma. The cartridge is closely related to the .308 Norma Magnum and both cartridges share the same case head dimensions as the .300 H&H Magnum , but have far less body taper, resulting in the same internal capacity in a shorter case. [ 1 ]
These bullets include most Barnes' bullets over 110 gr (7.1 g) and any conventional spitzer bullet of over 115 gr (7.5 g). Hornady's 117 gr (7.6 g) round nose bullet is made for such firearms which have the slower spin rate. Norma loads this bullet in the Weatherby's H257117RN ammunition for owner of such rifles who require a heavier bullet.
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.
The .338 Norma Magnum prior to C.I.P. certification had a shorter cartridge overall length (91.44 mm (3.60 in) compared to the cartridge overall length of the .338 Lapua Magnum (93.50 mm (3.681 in). The .338 Norma Magnum loaded with 19.44 g (300 gr) .338 caliber Sierra HPBT projectiles will have these projectile less deeply seated compared to ...
Like every other big-game cartridge, it presents a stout recoil. Since there are not many factory loads available, the 8mm Remington Magnum is often used by reloaders. They can use this cartridge to create powerful loads by handloading, while staying within the 448 MPa (65000 psi) SAAMI piezo pressure limit. Combined with bullets with jackets ...
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