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The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923, and it was unveiled in 1925 as a chambering for their bolt-action Model 54 [3] to become arguably the flattest shooting cartridge of its day, only competing with the .300 Holland & Holland Magnum, also introduced in the same year.
The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. [2] The cartridge is short enough to function in standard-length long actions with a brass length of 2.549" or 64.74mm and an overall length of about 3.295".
The Winchester Model 54 is a bolt-action rifle manufactured by the Winchester Repeating Arms Company. The 54 was the first successful production run civilian centerfire bolt action for Winchester. The 54 was the first successful production run civilian centerfire bolt action for Winchester.
The most prominent of these cartridges was the .45-70 (pronounced “forty five seventy”), but common chamberings in 45 caliber included .45-70, .45-90, .45-110, and even a .45-120 offering that ...
All of the WSM cartridges are inspired on the .404 Jeffery non-belted magnum cartridge which is shortened to fit a short rifle action (such as a .308 Winchester). [1] It was developed by Rick Jamison in 1997-1998 as proven in a 2005 lawsuit Jamison vs. Olin Corporation-Winchester division. [2] Jamison was given 7 patents on the cartridge design.
Three congressional Democrats, including two from Texas, introduced a bill Thursday calling for a ban on private sales of the civilian version of .50-caliber rifles, which the military uses to ...
The 270 WSM is an improvement over the older 270 Winchester providing higher velocity with bullets of the same weight, and thus a flatter trajectory and more energy. Velocities tend to be about 250 ft/s (76 m/s) faster, in a cartridge that is shorter and can therefore be used in a shorter action resulting in a more compact rifle if desired.
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