.375 Remington Ultra Magnum Explained

.375 Remington Ultra Magnum
Origin:United States
Type:Rifle
Designer:Remington
Design Date:2000[1]
Parent:.300 Remington Ultra Magnum
Case Type:Beltless, rebated-rim, bottleneck
Bullet:.375
Neck:.4050
Shoulder:.5250
Base:.5500
Rim Dia:.534
Case Length:2.850
Length:3.600
Rifling:1-12"
Primer:Large rifle magnum
Max Pressure:65000
Max Cup:< !-- Ballistic performance -->
Bw1:235
Btype1:SP
Vel1:3148
En1:5172
Bw2:250
Btype2:SBT
Vel2:3036
En2:5118
Bw3:260
Btype3:Partition
Vel3:2970
En3:5094
Bw4:270
Btype4:SP
Vel4:2941
En4:5187
Bw5:300
Btype5:RN
Vel5:2945
En5:5760
Test Barrel Length:26
Balsrc:Alliant Powder[2]

The .375 Remington Ultra Magnum, also known as the .375 RUM is a .375 rifle cartridge introduced by Remington Arms in 2000. The cartridge is intended for large and dangerous game.

It is a beltless, rebated rim cartridge created by necking up the .300 Remington Ultra Magnum case to .375 caliber with no other changes. Factory loadings are less powerful than handloads for the cartridge. Remington factory loads produce 2,760 ft/s (840 m/s)[3] with a 300 grain (19 g) bullet for 5,070 ft·lbf (6.88 kJ) of muzzle energy.

General information

The intended use of this cartridge includes hunting large, thick-skinned game. It is powerful enough to kill any land animal and, with its high velocity, can do so at fairly long ranges. Such performance comes at the price of a heavy recoil: in a sporting-weight rifle of ~8 lb (3.6 kg), this cartridge can produce a fierce 80 ft·lbf (108 J) of recoil (approximately 3.5 times that of a .30-06.)

There is a wide selection of .375 in (9.53 mm) bullets available that are suited to the high velocities of the .375 RUM, and boat tail bullets help to further extend the useful range.

Currently, there are no production rifles in this chambering(Savage & Remington previously did so.) Remington, DoubleTap[4] and Nosler[5] are the only sources of factory ammunition. Loading dies and reloading data are readily available to the handloader. Double Tap loads to the specifications attributed to handloader limits.

See also

External links

Notes and References

  1. Web site: 375 Remington Ultra Mag . . Barnes Bullets . Barnes Bullets, LLC. 38 N Frontage Rd Mona, UT 84645 . 2014-07-26 . https://web.archive.org/web/20140811081132/http://www.barnesbullets.com/copper_manual/375_Remington_Ultra_Mag.pdf . 2014-08-11 . dead .
  2. Web site: Alliant Powder - Reloaders' Guide . . Alliant Powder . Alliant Powder 2299 Snake River Avenue Lewiston, ID 83501 . 2014 .
  3. Web site: PREMIER A-FRAME. Remington. Remington Arms Company, LLC 870 Remington Drive P.O. Box 700 Madison, NC 27025-0700. 2014. 2014-07-23. https://web.archive.org/web/20140726152903/http://remington.com/products/ammunition/centerfire/premier-a-frame/premier-a-frame.aspx. 2014-07-26. dead.
  4. Web site: 375 Remington Ultra Mag . . 2014 . DoubleTap Ammunition . DoubleTap Ammunition 646 S. Main St. #333 Cedar City, UT 84720 . 2014-07-24.
  5. Web site: Ammunition-Nosler . . 2014 . Nosler . Nosler Inc. 107 SW Columbia St. Bend, OR 97702 . 2014-07-24 . 2014-07-16 . https://web.archive.org/web/20140716192202/http://www.nosler.com/ammunitionpage . dead .