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The .300 Winchester Magnum (also known as .300 Win Mag or .300 WM) (7.62×67mmB, 7.62x66BR) is a belted, bottlenecked magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard rifle action.
The .300 WSM also head-spaces off of the case shoulder, versus the older .300 Winchester Magnum's belted head space design. The advantage to this round is the ballistic performance is nearly identical to the .300 Winchester Magnum [ 2 ] in a lighter rifle with a shorter action burning 8 - 10% less gunpowder.
Browning X-Bolt chambered in .308 Winchester with a Nikon scope and a Magpul ... 300 WSM, 270 WSM, .223 ... The X-Bolt Rifle is a bolt-action rifle designed by the ...
The 300 WSM was the first of the new class of short magnums to see wide use. All of the WSM cartridges released to date have proven popular for thin-skinned game up to the size of elk and African plains game, the .325 WSM being an excellent cartridge for elk, bison and similar big game. The cartridges in this family are, in order of development:
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.
.300 Winchester Short Magnum.300 Lapua Magnum, 7.62×70mm.30-30 Winchester, a popular deer hunting cartridge, is typically used in lever-action rifles, such as the Winchester Model 1894 and Marlin Model 336, and is adapted to European sporting guns as 7.62×51mmR..30 R Blaser, used in break-action rifles for hunting medium to large game.
The German 8×68mm S cartridge introduced in 1939 is probably the closest ballistic twin of the .325 Winchester Short Magnum. The .325 Winchester Short Magnum is considerably shorter and fatter and has a more radical rebated rim, much steeper shoulder angle and a shorter neck (7.82 mm) than the 8×68mm S.
The 270 Winchester Short Magnum or 270 WSM is a short magnum cartridge created by necking down the .300 Winchester Short Magnum and fitting it with a .277 caliber bullet. The correct name for the cartridge, as listed by the Sporting Arms and Ammunition Manufacturers' Institute ( SAAMI ), is 270 WSM, without a decimal point. [ 3 ]