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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.
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
The 7mm-08 with 139-140 grain loads does well against some 150-grain .308 Win. loads, providing good energy levels. One example is the Remington 7mm-08 140 PSP (1490 fpe at 300 yards) compared with the Remington 308 150 grain PSP (1344 fpe at 300 yards). [14] The 7mm-08 invites a ballistic comparison with the veteran, highly esteemed 7×57mm ...
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 first black powder cartridge adopted in large numbers by the Japanese Army, it was used in the Murata rifle, a hybrid of French Gras and German Mausers 1871 and 1871/84 rifles. 12.7×108mm: 1930 USSR R 12.7×108mm 2700 11980 (13737) 255 0.511 108mm Used in Heavy Machine Guns, AT-rifles [41] and anti-materiel rifles. 14.5×114mm: 1941 [42 ...
The .375 Ruger cartridge has also functioned as the parent case for the 6.5 Precision Rifle Cartridge (6.5 PRC) [17] and 7mm Precision Rifle Cartridge (7mm PRC), [18] which are essentially necked-down shortened versions of the .375 Ruger. American ammunition manufacturer Hornady got the 6.5 PRC SAAMI-standardized in 2018 simultaneously with the ...
The introduction of intermediate cartridges allowed for the development of the assault rifle concept, which is a magazine-fed selective fire rifle lighter and more compact than the conventional battle rifles firing full-powered cartridges. The first intermediate cartridge was the German 7.92×33mm Kurz for the StG 44, [1] the world's first ...