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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 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 ...
The 226 Express subvariant, reduces shoulder and neck diameter with a long, slender body taper on the 30-06 case. [6] Experimentation during the mid-20th century indicated no practical benefit from the incremental volume increase of the 63 mm-long 30-06 case over the 57 mm-long 7mm Mauser case for .22 caliber bullets. [7]
While it is true that a .280 Remington case can be formed from a .30-06 Springfield case, the case length of a .30-06 is 63.3 millimetres (2.494 in) while the case length of a .280 is 64.5 millimetres (2.540 in), the same as a .30-03 Springfield. However, resized cases often stretch making up the difference in length and "The slight difference ...
An overview of 7mm caliber cartridges, their history, and uses in firearms.
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.
Belted. a.k.a. 300 H&H Super a.k.a. Holland's Super 30. [3].300 Remington Short Action Ultra Magnum: 2002 [8] US [8] 1 [12] R [10] 7.85×51.18mm [8] 3663 [10] 3761 [8] 2.054 69.0 [10] 0.308 [10] 0.730 [11] 51.18mm Beltless, rebated rim. Remington Short Action Ultra Magnum. .300 Remington Ultra Magnum: 1998 [8] US [8] 2 [7] [12] R [10] 7.85×72 ...
An intermediate cartridge is a rifle/carbine cartridge that has significantly greater power than a pistol cartridge but still has a reduced muzzle energy compared to fully powered cartridges (such as the .303 British, 7.62×54mmR, 7.65×53mm Mauser, 7.92×57mm Mauser, 7.7×58mm Arisaka, .30-06 Springfield, or 7.62×51mm NATO), and therefore is ...