The 7mm Remington Ultra Magnum or 7mm RUM is a 7mm
rifle
A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...
cartridge
Cartridge may refer to:
Objects
* Cartridge (firearms), a type of modern ammunition
* ROM cartridge, a removable component in an electronic device
* Cartridge (respirator), a type of filter used in respirators
Other uses
* Cartridge (surname), a ...
introduced by
Remington Arms
Remington Arms Company, LLC was an American manufacturer of firearms and ammunition, now broken into two companies, each bearing the Remington name. The firearms manufacturer is ''Remington Arms''. The ammunition business is called ''Remingto ...
in 2001.
Overview
The 7mm RUM was created using the
.404 Jeffery
The .404 Jeffery is a rifle cartridge designed for hunting large, dangerous game animals, such as the " Big Five" (elephant, rhino, cape buffalo, lion and leopard) of Africa. The cartridge is standardized by the C.I.P. and is also known as .404 ...
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 the belt diameter of the original belted numbers. The resulting case has significantly more capacity than any conventional belted magnum. Compared to the
7mm Remington Magnum
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 . ...
, 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.
The 7mm Ultra Magnum boasts the largest case of any commercial 7mm cartridge. The 7mm Ultra Magnum (7mmx91) is a different cartridge than the similarly named 7mm Short Action Ultra Magnum cartridge (7mmx71). The two are not interchangeable.
See also
*
List of rifle cartridges
List of rifle cartridges, by primer type, calibre and name.
File:Cartridge Sample 2.jpg, 350px, From left to right: 1 .17 HM2,2 .17 HMR, 2.5 .17 wsm, 3 .22LR, 4 .22 WMR, 5 .17/23 SMc, 6 5mm/35 SMc, 7 .22 Hornet, 8 .223 Remington, 9 .223 WSSM ...
*
Table of handgun and rifle cartridges
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 (e.g. the highest muzzle energy might not be in the same ...
*
7 mm caliber
This is a list of firearm cartridges which have bullets in the caliber
In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) ...
References
External links
Pistol and rifle cartridges
Remington Ultra Magnum rifle cartridges
{{ammo-stub