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7mm Cartridge Guide from AccurateShooter.com; Rifle Shooter Mag article on 7 mm cartridges This page was last edited on 9 January 2025, at 10:53 (UTC) ...
The 7mm Remington Magnum rifle cartridge was introduced as a commercially available round in 1962, [2] 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 .375 H&H Magnum. [3]
The 7mm Backcountry is a modern rifle cartridge using cartridge cases of a proprietary steel alloy able to withstand higher pressures than traditional brass alloys. The objective is to obtain higher muzzle velocities from short-barreled rifles which are lighter and easier to carry than 20th-century rifles intended for long range shooting. [1]
The 7mm-08 Remington is a rifle cartridge that is almost a direct copy of a wildcat cartridge developed around 1958 known as the 7mm/308. As these names would suggest, it is the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length.
The 7mm Shooting Times Westerner, sometimes referred to as the 7mm STW, began as a wildcat rifle cartridge developed by Layne Simpson, Field Editor of Shooting Times, in 1979. [3] It is an 8mm Remington Magnum case that has been "necked down" (narrowing the case opening) by 1 mm to accept 7 mm (.284 in) bullets.
7 mm Remington cartridges are all rifle cartridges with bullets of 7 millimetres (0.28 in) diameter developed and sold by Remington. These cartridges include: .280 Remington (7mm Express Remington) 7mm BR Remington (Bench Rest) 7mm Remington Magnum; 7mm Remington Ultra Magnum (RUM) 7mm Remington Short Action Ultra Magnum (SAUM) 7mm-08 Remington
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 7mm Winchester Short Magnum (also known as the 7mm WSM) is a centrefire cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2001. It is a member of the Winchester Short Magnum family of cartridges.