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Compared to the 7mm Remington Magnum, top 7mm RUM loads deliver 25% more energy at 300 yards. [citation needed] 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.
The commercially rarer 7mm Remington Short Action Ultra Magnum cartridge, a rebated rim bottlenecked centerfire short magnum introduced in 2002, is probably the other closest ballistic twin of the 7mm Remington Magnum. The 7mm Remington Short Action Ultra Magnum is considerably shorter and fatter and has a steeper shoulder angle and a longer ...
The 7mm SAUM is a popular choice in f-class shooting, and has been used to take home multiple championships in this discipline. [2] [3] The 7mm Short Action Ultra Magnum cartridge (7mmx51) is a different cartridge than the similarly named 7mm Ultra Magnum (7mmx72). The two are not interchangeable.
The long case is very large and provides performance that exceeds existing commercial magnums, such as the .300 Winchester Magnum and .300 Weatherby Magnum. [2] The short design is the same idea as used in the Winchester Short Magnum cartridges. The shorter cartridges are known as Remington Short Action Ultra Magnum, RSAUM, RSUM, or SAUM.
Rebating the rim to 13.6 mm (0.534 in) simplifies the production of rifle bolts since the rims of Holland & Holland-style belted magnums, such as the 7mm Remington Magnum and .300 Winchester Magnum, are the same diameter. Whereas the 7mm RUM case measures 60.6 mm (2.387 in) long from head to body-shoulder juncture, that dimension on the .28 ...
The rifle was chambered for the .308 Winchester cartridge as well as the .223 Remington, .243 Winchester, 7mm Remington Magnum, .300 Winchester Magnum, .300 Remington Ultra Magnum, and .338 Lapua Magnum. The 700P has a 26" barrel, and aluminum block bedding in its stock, which is made by HS Precision.
7mm Remington Short Action Ultra Magnum (SAUM) 7mm-08 Remington; See also. 7mm Shooting Times Westerner, standardized by Remington but originated as a wildcat;
An overview of 7mm caliber cartridges, their history, and uses in firearms.