.300 Remington Short Action Ultra Magnum (also known as 300 RSAUM, 300 RSUM or 300 Rem SAUM) is a .30
caliber
In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) , bore – regardless of how or where the bore is measured and whether the f ...
short magnum
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) Ca ...
that is a shortened version of the Remington 300 Ultra Mag, both of which derive from 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. The Remington Short Ultra Mag was put on the market shortly after Winchester released its
300 WSM
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societie ...
round in 2001, resulting in the Winchester product getting the marketing advantage that has eclipsed the Remington offering.
[The .300 Remington Short Action Ultra Mag by Chuck Hawks](_blank)
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Performance
The 300 RSAUM's ballistics are similar to 300 Win Mag
The .300 Winchester Magnum (also known as .300 Win Mag or .300 WM) (7.62×67mmB, 7.62x66BR) is a belted, bottlenecked magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a ma ...
and 300 WSM
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societie ...
. The difference in ballistics between the WSM and RSAUM are insignificant in all practical applications. Differences in muzzle velocity and muzzle energy are related to barrel length rather than case dimension.
Muzzle velocity
* 10.69 g (165 gr) full metal jacket (FMJ): 3,075 ft/s
* 11.66 g (180 gr) FMJ: 2,960 ft/s
Comparisons
* The WSM has slightly more case capacity and thus, slightly more velocity
* The WSM is more popular and more ammo and handloading
Handloading, or reloading, is the practice of making firearm cartridges by assembling the individual components (case, primer, propellant, and projectile), rather than purchasing mass-assembled, factory-loaded ammunition.
The term ''hand ...
data are available
See also
* .300 Remington Ultra Magnum
The .300 Remington Ultra Magnum, also known as the .300 Ultra Mag, 7.62×72mm or .300 RUM is a 7.62 mm (.308 inch) rifle cartridge introduced by Remington Arms in 1999. The .300 Remington Ultra Magnum is one of the largest commercially ava ...
* 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) ...
* List of firearms
This is an extensive list of small arms—including pistols, revolvers, submachine guns, shotguns, battle rifles, assault rifles, sniper rifles, machine guns, personal defense weapons, carbines, designated marksman rifles, flamethrowers, multipl ...
* 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 ...
* List of individual weapons of the U.S. Armed Forces
This is a list of weapons served individually by the United States armed forces. While the general understanding is that crew-served weapons require more than one person to operate them, there are important exceptions in the case of both squad a ...
References
7mm-300 SAUM Cartridge Guide by AccurateShooter.com
{{DEFAULTSORT:300 Remington SA Ultra Mag
Pistol and rifle cartridges
Remington Short Action Ultra Magnum rifle cartridges