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The 7mm RUM was created using the .404 Jeffery case [citation needed] which was also used to develop the .375 RUM.300 RUM, and .338 RUM [citation needed]. 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 ...
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 heaviest commercially loaded ammo available for the 7mm is 195 grains, [6] while the .30-06 Springfield can be loaded with bullets up to 220 grains, but for a .308 caliber to equal the flat trajectory and penetration of a .284 diameter 180-grain bullet with a muzzle velocity of 2,860 ft/sec (870 m/s), as offered for the 7mm Remington Magnum ...
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 load as the highest muzzle velocity, since the bullet weights can differ between loads).
An overview of 7mm caliber cartridges, their history, and uses in firearms.
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 available .30 caliber magnums currently being produced.
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.
Based on the same principles as the Remington 700 series, the Model 710 uses a centerfire bolt-action cartridge, a 3-lug bolt system as opposed to the Remington 700's dual opposed locking lugs, with a 4-round detachable magazine (or a 3-round for the 7 mm Remington Magnum and the .300 Winchester Magnum). All can be equipped with a bipod and ...