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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.
An overview of 7mm caliber cartridges, their history, and uses in firearms.
Download as PDF; Printable version; In other projects ... Table of handgun and rifle cartridges; ... This page was last edited on 22 March 2022, ...
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
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
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.
Remington introduced the 7mm Short Action Ultra Magnum (SAUM) cartridge in 2002 to compete with the 7mm Winchester Short Magnum cartridge. It was designed specifically for the Remington Model Seven Magnum rifle, and intended primarily for long-range hunting use.
The 7mm ICL is an improved .264 Winchester Magnum necked up to .7mm. Performance with a 140-grain (9.1 g) bullet is approximately 3,405 ft/s (1,038 m/s) and with a 160-grain (10 g) bullet is approximately 3,230 ft/s (980 m/s).