.375 Remington Ultra Magnum

Last updated
.375 Remington Ultra Magnum
Type Rifle
Place of origin United States
Production history
Designer Remington
Designed2000 [1]
Specifications
Parent case .300 Remington Ultra Magnum [1]
Case typeBeltless, rebated-rim, bottleneck
Bullet diameter.375 in (9.5 mm)
Neck diameter.4050 [1]
Shoulder diameter.5250 in (13.34 mm)
Base diameter.5500 in (13.97 mm)
Rim diameter.534 [1]
Case length2.850 [1]
Overall length3.600 in (91.4 mm)
Rifling twist1-12"
Primer typeLarge rifle magnum
Maximum pressure65,000 psi (450 MPa)
Maximum CUP< !-- Ballistic performance --> CUP
Ballistic performance
Bullet mass/typeVelocityEnergy
235 gr (15 g) SP3,148 ft/s (960 m/s)5,172 ft⋅lbf (7,012 J)
250 gr (16 g) SBT3,036 ft/s (925 m/s)5,118 ft⋅lbf (6,939 J)
260 gr (17 g) Partition2,970 ft/s (910 m/s)5,094 ft⋅lbf (6,907 J)
270 gr (17 g) SP2,941 ft/s (896 m/s)5,187 ft⋅lbf (7,033 J)
300 gr (19 g) RN2,945 ft/s (898 m/s)5,760 ft⋅lbf (7,810 J)
Test barrel length: 26
Source(s): 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. [1]

Contents

It is a beltless, rebated rim cartridge created by necking up the .300 Remington Ultra Magnum case to .375 caliber with no other changes. [1] Factory loadings are less powerful than handloads for the cartridge. Remington factory loads push a 300 grain (19 g) bullet at 2760 ft/s (840 m/s), [3] producing 5070 ft·lbf (6.88 kJ) of energy. A handloader can increase the muzzle velocity of a 300gr bullet to 3321 ft/s (900 m/s), [4] and develop 5800 ft·lbf (7.9 kJ). [5]

General information

The intended use of this cartridge includes hunting large, thick-skinned game. [1] It is powerful enough to kill any land animal [1] 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 [1] [3] [6] 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, [3] DoubleTap [7] and Nosler [6] 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

Related Research Articles

<span class="mw-page-title-main">Table of handgun and rifle cartridges</span> Small arms cartridge data

This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load.

<span class="mw-page-title-main">.460 Weatherby Magnum</span> Rifle cartridge

The .460 Weatherby Magnum is a belted, bottlenecked rifle cartridge, developed by Roy Weatherby in 1957. The cartridge is based on the .378 Weatherby Magnum necked up to accept the .458-inch (11.6 mm) bullet. The original .378 Weatherby Magnum parent case was inspired by the .416 Rigby. The .460 Weatherby Magnum was designed as an African dangerous game rifle cartridge for the hunting of heavy, thick skinned dangerous game.

<span class="mw-page-title-main">.458 Winchester Magnum</span> Rifle cartridge

The .458 Winchester Magnum is a belted, straight-taper cased, Big Five game rifle cartridge. It was introduced commercially in 1956 by Winchester and first chambered in the Winchester Model 70 African rifle. It was designed to compete against the .450 Nitro Express and the .470 Nitro Express cartridges used in big bore British double rifles. The .458 Winchester Magnum remains one of the most popular large game cartridges, and most major ammunition manufacturers offer a selection of .458 ammunition.

<span class="mw-page-title-main">7mm-08 Remington</span> Necked down .308Win

The 7mm-08 Remington is a rifle cartridge that is almost a direct copy of a wildcat cartridge developed around 1958 known as the 7mm/308. As these names would suggest, it is the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length. Of cartridges based upon the .308, it is the second most popular behind only the .243 Winchester. However, the .308 is more popular than both. In 1980, the Remington Arms company popularized the cartridge by applying its own name and offering it as a chambering for their Model 788 and Model 700 rifles, along with a limited-run series within their Model 7600 pump-action rifles during the early 2000s.

The .204 Ruger is a centerfire rifle cartridge developed by Hornady and Ruger. At the time of its introduction in 2004, the .204 Ruger was the second-highest velocity commercially produced ammunition and the only centerfire cartridge produced commercially for bullets of .204 inch/5 mm caliber.

<span class="mw-page-title-main">.300 Winchester Magnum</span> Rifle cartridge

The .300 Winchester Magnum is a belted, bottlenecked Magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard rifle action. It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet.

<span class="mw-page-title-main">.444 Marlin</span> Rifle cartridge

The .444 Marlin (10.9×57mmR) is a rifle cartridge designed in 1964 by Marlin Firearms and Remington Arms. It was designed to fill in a gap left by the older .45-70 when that cartridge was not available in any new lever-action rifles; at the time it was the largest lever-action cartridge available. The .444 resembles a lengthened .44 Magnum and provides a significant increase in velocity. It is usually used in the Marlin 444 lever-action rifle. Currently, Marlin, who is now owned by Ruger Firearms, does not offer the .444 chambering in any of their rifles. It remains to be seen when or if they will bring the chambering back into production.

<span class="mw-page-title-main">.222 Remington</span> Centerfire rifle cartridge

The .222 Remington or 5.7×43mm (C.I.P), also known as the triple deuce, triple two, and treble two, is a centerfire rifle cartridge. Introduced in 1950, it was the first commercial rimless .22 (5.56 mm) cartridge made in the United States. As such, it was an entirely new design, without a parent case. The .222 Remington was a popular target cartridge from its introduction until the mid-1970s and still enjoys a reputation for accuracy. It remains a popular vermin or "varmint" cartridge at short and medium ranges with preferred bullet weights of 40–55 grains and muzzle velocities from 3,000 to 3,500 ft/s (915–1,067 m/s).

<span class="mw-page-title-main">7mm Remington Magnum</span> Rifle cartridge

The 7mm Remington Magnum rifle cartridge was introduced as a commercially available round in 1962, along with the new Remington Model 700 bolt-action rifle. It is a member of the belted magnum family that is directly derived from the venerable .375 H&H Magnum. The original purpose of the belted magnum concept taken from the .300 H&H Magnum and .375 H&H Magnum, was to provide precise headspace control, since the sloping shoulders, while easing cartridge extraction, were unsuitable for this purpose. Improved cartridge extraction reliability is desirable while hunting dangerous game, in particular when a fast follow-up shot is required. The 7mm Remington Magnum is based on the commercial .264 Winchester Magnum, .338 Winchester Magnum, and .458 Winchester Magnum, which were based on the same belted .300 H&H Magnum and .375 H&H Magnum cases, trimmed to nearly the same length as the .270 Weatherby Magnum.

<span class="mw-page-title-main">8mm Remington Magnum</span> Rifle cartridge

The 8mm Remington Magnum belted rifle cartridge was introduced by Remington Arms Company in 1978 as a new chambering for the model 700 BDL rifle. The 8mm Remington Magnum's parent case is the .375 H&H Magnum. It is a very long and powerful cartridge that cannot be used in standard length actions, such as those that accommodate the .30-06 Springfield.

The .300 Remington Ultra Magnum, also known as the .300 Ultra Mag, 7.62×72mm or .300 RUM, is a 7.62 mm rifle cartridge introduced by Remington Arms in 1999. The .300 Remington Ultra Magnum is one of the largest commercially available .30 caliber magnums currently being produced. It is a beltless, rebated rim cartridge, capable of handling all large North American game, as well as long-range shooting. Among commercially produced .30-caliber rifle chamberings, the .300 Remington Ultra Magnum is second only to the .30-378 Weatherby Magnum in cartridge-case capacity.

The .264 Winchester Magnum is a belted, bottlenecked rifle cartridge. Except for the .244 H&H Magnum and .257 Weatherby Magnum, it is the smallest caliber factory cartridge derived from the 2.85 in (72 mm) Holland & Holland belted magnum case. It was introduced in the late 1950s and early 1960s with the .338 Winchester Magnum and the .458 Winchester Magnum as one of a family of short-cased 2.5 in (64 mm) belted magnum cartridges developed by Winchester based on the .375 Holland & Holland parent case. It was officially introduced to the public by Winchester in 1959. After many years of dwindling use it began enjoying a mild resurgence in popularity in the mid-2000s among long range rifle enthusiasts and reloaders due to the high ballistic coefficient of the heavier 6.5mm bullets and increasing popularity of cartridges such as 6.5mm Creedmoor, .260 Remington, 6.5 Grendel, benchrest and wildcat cartridges in 6.5mm.

<span class="mw-page-title-main">.240 Weatherby Magnum</span> Rifle cartridge

The .240 Weatherby Magnum was developed in 1968 by Roy Weatherby. In the development of his own .240in/6 mm cartridge, Weatherby was significantly influenced by both the success and the limitations of the .244 H&H Magnum cartridge devised in England by his friend and colleague David Lloyd. It was the last cartridge to be designed by Roy Weatherby.

<span class="mw-page-title-main">.257 Roberts</span> Rifle cartridge

The .257 Roberts, also known as .257 Bob, is a medium-powered .25 caliber rifle cartridge. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the 5 mm and 6 mm, and has more energy, but is harder recoiling, similar to larger hunting calibers, such as the 7 mm and 7.62 mm.

<span class="mw-page-title-main">.404 Jeffery</span>

The .404 Jeffery is a rifle cartridge designed for hunting large, dangerous game animals, such as the "Big Five" of Africa. The cartridge is standardized by the C.I.P. and is also known as .404 Rimless Nitro Express. It was designed in 1905 by London based gunmaker W.J. Jeffery & Co to duplicate the performance of the .450/400 Nitro Express 3-inch in bolt-action rifles. The .404 Jeffery fired a bullet of .422 in (10.72 mm) diameter of either 300 gr (19 g) with a muzzle velocity of 2,600 ft/s (790 m/s) and muzzle energy of 4,500 foot-pounds force (6,100 N⋅m) or 400 gr (26 g) with a muzzle velocity of 2,150 ft/s (660 m/s) and 4,100 foot-pounds force (5,600 N⋅m) of energy. It is very effective on large game and is favored by many hunters of dangerous game. The .404 Jeffery was popular with hunters and game wardens in Africa because of its good performance with manageable recoil. By way of comparison, the .416 Rigby and .416 Remington Magnum cartridges fire .416 in (10.57 mm) bullets of 400 gr at 2,400 feet per second (730 m/s) with a muzzle energy of approximately 5,000 foot-pounds force (6,800 N⋅m). These cartridges exceed the ballistic performance of the .404 Jeffery but at the price of greater recoil and, in the case of the .416 Rigby, rifles that are more expensive.

<span class="mw-page-title-main">.270 Weatherby Magnum</span> Rifle cartridge

The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. The cartridge is short enough to function in standard-length long actions with a brass length of 2.549" or 64.74mm and an overall length of about 3.295".

<span class="mw-page-title-main">.416 Remington Magnum</span> Rifle cartridge

The .416 Remington Magnum is a .416 caliber (10.57 mm) cartridge of belted bottlenecked design. The cartridge was intended as a dangerous game hunting cartridge and released to the public in 1989. The cartridge uses the case of the 8 mm Remington Magnum as a parent cartridge. When the cartridge was released in 1988, author Frank C. Barnes considered the .416 Remington Magnum to be the "most outstanding factory cartridge introduced in decades".

<span class="mw-page-title-main">.340 Weatherby Magnum</span> Rifle cartridge

The .340 Weatherby Magnum rifle cartridge was introduced in 1962 by creator Roy Weatherby to fill the gap between the .300 Weatherby Magnum and the .378 Weatherby Magnum, and in response to the .338 Winchester Magnum released in 1958.

<span class="mw-page-title-main">.338 Remington Ultra Magnum</span> Rifle cartridge

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

Nosler produces six different hunting cartridges. The first to be introduced was .26 Nosler, followed by .28 Nosler, .30 Nosler, .33 Nosler, .22 Nosler, and .27 Nosler.

References

  1. 1 2 3 4 5 6 7 8 9 10 "375 Remington Ultra Mag" (PDF). Barnes Bullets. Barnes Bullets, LLC. 38 N Frontage Rd Mona, UT 84645. Archived from the original (PDF) on 2014-08-11. Retrieved 2014-07-26.
  2. "Alliant Powder - Reloaders' Guide". Alliant Powder. Alliant Powder 2299 Snake River Avenue Lewiston, ID 83501. 2014.
  3. 1 2 3 "PREMIER A-FRAME". Remington. Remington Arms Company, LLC 870 Remington Drive P.O. Box 700 Madison, NC 27025-0700. 2014. Archived from the original on 2014-07-26. Retrieved 2014-07-23.
  4. "Hodgdon Online Reloading Data". Hodgdon Powder, P.O. BOX 2932 • SHAWNEE MISSION, KANSAS 66201. 2014. Archived from the original on 2007-11-11. Retrieved 2014-07-23.
  5. "The .375 Remington Ultra Mag" by Chuck Hawks
  6. 1 2 "Ammunition-Nosler". Nosler. Nosler Inc. 107 SW Columbia St. Bend, OR 97702. 2014. Archived from the original on 2014-07-16. Retrieved 2014-07-24.
  7. "375 Remington Ultra Mag". DoubleTap Ammunition. DoubleTap Ammunition 646 S. Main St. #333 Cedar City, UT 84720. 2014. Retrieved 2014-07-24.