.338 Remington Ultra Magnum
Rifle cartridge
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The .338 Remington Ultra Magnum is a .338 caliber rifle cartridge introduced by Remington Arms in 2002.
| .338 Remington Ultra Magnum | ||||||||||||
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| Type | Rifle | |||||||||||
| Place of origin | USA | |||||||||||
| Production history | ||||||||||||
| Designer | Remington | |||||||||||
| Designed | 2000 | |||||||||||
| Specifications | ||||||||||||
| Parent case | .300 Remington Ultra Magnum | |||||||||||
| Case type | Beltless, rebated, bottleneck | |||||||||||
| Bullet diameter | .338 in (8.6 mm) | |||||||||||
| Neck diameter | .371 in (9.4 mm) | |||||||||||
| Shoulder diameter | .526 in (13.4 mm) | |||||||||||
| Base diameter | .550 in (14.0 mm) | |||||||||||
| Rim diameter | .534 in (13.6 mm) | |||||||||||
| Case length | 2.760 in (70.1 mm) | |||||||||||
| Overall length | 3.600 in (91.4 mm) | |||||||||||
| Case capacity | 113 gr H2O (7.3 cm3) | |||||||||||
| Rifling twist | 1-10 in (254 mm) | |||||||||||
| Primer type | Large rifle magnum | |||||||||||
| Maximum pressure | 65,000 | |||||||||||
| Ballistic performance | ||||||||||||
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| Test barrel length: 26" | ||||||||||||
Design
It is a beltless, rebated rim cartridge based on the .300 Remington Ultra Magnum[1] case shortened .090" and necked-up to accept a 0.338-inch (.338 caliber) bullet. The .338 Remington Ultra Magnum has a similar case capacity as the .338 Lapua Magnum[2] and somewhat lower than that of the .338-378 Weatherby Magnum. It is one of the most powerful .338-caliber rounds in production.[citation needed]
