7mm Remington Ultra Magnum

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

Bullet mass/type	Velocity	Energy
140 gr (9 g) PSP Bonded	3,425 ft/s (1,044 m/s)	3,646 ft·lbf (4,943 J)
150 gr (10 g) PSP Bonded	3,325 ft/s (1,013 m/s)	3,682 ft·lbf (4,992 J)
175 gr (11 g) PSP A-Frame	3,025 ft/s (922 m/s)	3,555 ft·lbf (4,820 J)

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 which was also used to develop the .375 RUM .300 RUM, and .338 RUM. 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. 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.

References

↑ http://www.ballisticstudies.com/Knowledgebase/7mm+Remington+Ultra+Magnum.html

Remington Firearms and Cartridges

Rifles

Bolt-action	JuniorTarget 521TL Remington-Keene rifle M1903 Springfield rifle Pattern 1914 Enfield M1917 Enfield Model 5 Model 6 Model 7 Model 30 Model 34 M40 Model 341 Model 504 Model 511 Model 512 Model 513 Model 521 Model 580 Model 581 Model 582 Model 600 Model 660 Model 673 Model 700 Model 710 Model 720 Model 721 Model 722 Model 725 Model 770 Model 788 Model 798 Model 799 M24 Sniper Weapon System M2010 Enhanced Sniper Rifle Modular Sniper Rifle

Pump-action	Model Six Model 14 Model 121 Model 141 Model 572 Model 572 Fieldmaster Model 760 Model 7600 Model 7615

Semi-automatic	Nylon 66 Model Four Model 8 Model 24 Model 241 Model 522 Model 552 Model 597 Model 740 Model 742 Model 7400 Model 750 R5 Remington Gas System Model R-15 Model R-25 RSASS

Automatic	Adaptive Combat Rifle

Single shot	Rolling Block

Shotguns

Pump-action	Model 10 and 29 Model 17 Model 31 Model 870 Model 887

Semi-automatic	Model 11 Model 11-48 Model 58 Model 878 Model 1100 Model 11-87 Model SP-10 SPR 453

Break-action	SPR 100 SPR 310

Handguns

Semi-automatic	1911 R1 Model 51 R51 RM380

Revolver	Model 1858 Model 1875 Model 1890

Derringer	Model 95 Rider Single Shot Pistol Zig-Zag Derringer

Other	XP-100

Cartridges

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7mm Remington Ultra Magnum

Overview

See also

References