.338 Remington Ultra Magnum Explained

.338 Remington Ultra Magnum
Origin:USA
Type:Rifle
Designer:Remington
Design Date:2000
Parent:.300 Remington Ultra Magnum
Case Type:Beltless, rebated, bottleneck
Bullet:.338
Neck:.371
Shoulder:.526
Base:.550
Rim Dia:.534
Case Length:2.760
Length:3.600
Case Capacity:113
Rifling:1-10 in (254 mm)
Max Pressure:65,000
Primer:Large rifle magnum
Bw1:250
Btype1:PSP Bonded
Vel1:2860
En1:4540
Bw2:250
Btype2:PSP A-Frame
Vel2:2860
En2:4540
Test Barrel Length:26"

The .338 Remington Ultra Magnum is a .338 caliber rifle cartridge introduced by Remington Arms in 2002.

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.

Because this cartridge already operates at very high pressures (65,000 PSI), handloaders cannot realize significant velocity improvements over factory ammunition as many handloaders have done over the years with more conventional, lower pressure rounds. However, they can still tune their own loads for best precision in their specific rifles, as with any other cartridge.

See also

External links

Notes and References

  1. http://www.chuckhawks.com/338rem_ultra_mag.htm .338 Rem Ultra Mag
  2. Web site: Lapua vs RUM Case Capacity . 2014-07-17 . https://web.archive.org/web/20140726050622/http://www.longrangehunting.com/forums/f19/lapua-vs-rum-case-capacity-92742/ . 2014-07-26 . dead .