7mm Remington Ultra Magnum
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7mm Remington Ultra Magnum | ||||||||||||||||
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Type | Rifle | |||||||||||||||
Place of origin | United States | |||||||||||||||
Production history | ||||||||||||||||
Designer | Remington | |||||||||||||||
Designed | 2002 | |||||||||||||||
Specifications | ||||||||||||||||
Parent case | .300 Remington Ultra Magnum | |||||||||||||||
Case type | Beltless, rebated, bottleneck | |||||||||||||||
Bullet diameter | .284 in (7.2 mm) | |||||||||||||||
Neck diameter | .317 in (8.1 mm) | |||||||||||||||
Shoulder diameter | .5250 in (13.34 mm) | |||||||||||||||
Base diameter | .5500 in (13.97 mm) | |||||||||||||||
Rim diameter | .532 in (13.5 mm) | |||||||||||||||
Case length | 2.850 capacity 108.1 gr. | |||||||||||||||
Overall length | 3.600 in (91.4 mm) | |||||||||||||||
Rifling twist | 1-9 1/4" | |||||||||||||||
Primer type | Large rifle magnum | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Test barrel length: 26" |
The 7mm Remington Ultra Magnum or 7mm RUM is a 7mm rifle cartridge introduced by Remington Arms in 2001.
Overview[]
The 7mm RUM was created using the .404 Jeffery case[citation needed]which was also used to develop the .375 RUM .300 RUM, and .338 RUM[citation needed]. By necking down the .300 RUM to suit the .284 or 7mm projectile, Remington produced a non-belted case with a head diameter that is somewhat larger than belt diameter of original belted numbers. The resulting case has significantly more capacity than any conventional belted magnum. Compared to the 7mm Remington Magnum, top 7mm RUM loads deliver 25% more energy at 300 yards.[citation needed] Such performance demands a price and in this case, that is a large muzzle blast, sharp recoil and short barrel life.[1]
The 7mm Ultra Magnum boasts the largest case of any commercial 7mm cartridge.
See also[]
References[]
![]() | This article needs additional citations for verification. (September 2014) |
External links[]
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Wikimedia Commons has media related to 7 mm Remington Ultra Magnum. |
- Pistol and rifle cartridges
- Remington Ultra Magnum rifle cartridges
- Ammunition stubs