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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.
6.5-300 Weatherby Magnum.270 Winchester Short Magnum.270 Weatherby Magnum.275 Holland & Holland Magnum.300 Ruger Compact Magnum.300 Remington Short Action Ultra Magnum.300 Winchester Short Magnum.300 Winchester Magnum.300 Holland & Holland Magnum.308 Norma Magnum.300 Norma Magnum.300 Weatherby Magnum.300 Remington Ultra Magnum.30-378 Weatherby ...
The .300 Ruger Compact Magnum uses a unique case designed by Hornady and Ruger based on the powerful .375 Ruger cartridge. The case is of a rimless design having the base and rim diameter of .532 in (13.5 mm) which is the same diameter of the belt on belted magnum cases based on the .300 H&H Magnum and .375 H&H Magnum. This allows the cartridge ...
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.
The .300 Ruger Compact Magnum or .300 RCM was designed in 2007 and uses a case designed by Hornady and Ruger based on the .375 Ruger cartridge. The case is of a rimless design having the base and rim diameter of .532 in (13.5 mm), which is the same diameter of the belt on belted magnum cases based on the .300 H&H Magnum and .375 H&H Magnum.
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 ]
The 500-grain (32 g) Weatherby factory ammunition has a maximum point blank range of 245-yard (224 m). These trajectories compare well with those of the .375 H&H Magnum. At 200 yd (180 m) Hornady's Interlock .375 H&H Magnum's 270 gr (17 g) bullet drops 11.3 in (29 cm) while Hornady's DGX 300 gr (19 g) bullet drops 13.8 in (35 cm).
The American ammunition manufacturer Hornady got the 300 Precision Rifle Cartridge [15] SAAMI-standardized in 2018. [16] [17] In 2019 it got C.I.P.-standardized as the 300 PRC. [18] The .375 Ruger cartridge has functioned as the parent case for the .300 Precision Rifle Cartridge (300 PRC), [19] which is essentially a necked-down version of the ...