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This new .270 cartridge was the third commercial .270 ever produced, and the first one in 60 years. [1] 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 ...
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 6.5 PRC (Precision Rifle Cartridge) was initially designed by George Gardner of GA Precision and Hornady in 2013 and released at the 2018 SHOT Show. It is essentially a more powerful and flatter-shooting version of the 6.5mm Creedmoor and uses the same bullet, but not the same cartridge case. [13] [14]
Created Date: 8/30/2012 4:52:52 PM
Components of a modern bottleneck rifle cartridge. Top-to-bottom: Copper-jacketed bullet, smokeless powder granules, rimless brass case, Boxer primer.. Handloading, or reloading, is the practice of making firearm cartridges by manually assembling the individual components (metallic/polymer case, primer, propellant and projectile), rather than purchasing mass-assembled, factory-loaded ...
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".
Reloading the .460 Weatherby Magnum is no more difficult than reloading any other belted magnum cartridges. The reloader has a wide variety of components, bullets and powders available. Among bullet manufacturers Barnes, Hornady and Lyman provide reloading data in their manuals for the .460 Weatherby Magnum.
Reloading dies for this wildcat chambering are readily available. The .228 Ackley Magnum is also based on the 7×57mm Mauser cartridge but is also necked down to .228 caliber (5.79 mm). Bullets in this caliber are hard to find but provide greater weight than .223 caliber bullets, up to 100 grains (6.5 g), without excessively quick twist rate.