.300 Norma Magnum | ||||||||
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Type | Rifle | |||||||
Place of origin | Sweden | |||||||
Production history | ||||||||
Designer | Norma | |||||||
Designed | 2012 | |||||||
Specifications | ||||||||
Parent case | .338 Norma Magnum | |||||||
Case type | Rimless, bottleneck | |||||||
Bullet diameter | 7.83 mm (0.308 in) | |||||||
Neck diameter | 8.68 mm (0.342 in) | |||||||
Shoulder diameter | 14.29 mm (0.563 in) | |||||||
Base diameter | 14.87 mm (0.585 in) | |||||||
Rim diameter | 14.93 mm (0.588 in) | |||||||
Rim thickness | 1.52 mm (0.060 in) | |||||||
Case length | 63.30 mm (2.492 in) | |||||||
Overall length | 93.50 mm (3.681 in) | |||||||
Case capacity | 6.75 cm3 (104.2 gr H2O) | |||||||
Rifling twist | 229 mm (1 in 9 in) | |||||||
Primer type | Large rifle magnum | |||||||
Maximum pressure (CIP) | 440.00 MPa (63,817 psi) | |||||||
Ballistic performance | ||||||||
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Source(s): Cartridges of the World, 2012 |
The .300 Norma Magnum, also known as .300 NM or "300 Norma" for short, is a centerfire magnum rifle cartridge developed by Swedish ammunition manufacturer Norma Precision. The .300 Norma Magnum uses a .338 Norma Magnum case necked down to the .30 caliber,[1] named to differentiate it from the older .308 Norma Magnum designed in 1960, and has begun to gain popularity in the long-range shooting community. According to the official C.I.P. (English: Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .300 Norma Magnum can handle up to 440.00 MPa (63,817 psi) Pmax piezo pressure.[2]
The United States Special Operations Command (USSOCOM) chose the new MK22 Advanced Sniper Rifle which will be chambered in .300 Norma Magnum (designated M1163) as well as 7.62x51mm and .338 Norma Magnum.[3][4][5]
References
- ^ Barnes, Frank C. (2012). Richard A. Mann (ed.). Cartridges of the World (13th ed.). p. 471. ISBN 1440230595.
- ^ "C.I.P. TDCC datasheet 300 Norma Mag" (PDF). CIP. Archived (PDF) from the original on 12 July 2013. Retrieved 4 July 2013.
- ^ "MK22 Precision Sniper Rifle (PSR)". PEO Soldier. Archived from the original on 18 May 2022. Retrieved 18 May 2022.
- ^ "1305-01-669-2481 (1305-AC33, 13065024, 13072050) Data". Part Target. Archived from the original on 3 June 2022. Retrieved 3 June 2022.
- ^ "ARMY - MIL-DTL-32618 (3) CONT. DIST". GlobalSpec. Archived from the original on 18 May 2022. Retrieved 18 May 2022.