.270 Winchester Short Magnum

Rifle cartridge 270 Winchester Short Magnum 270 WSM.jpg 300px 270 WSM cartridge USA Rifle Winchester 2002 2002–present .300 WSM Rimless, bottleneck .277 .270 .3140 .5381 .5550 .535 .054 2.100 2.860 1-10" Large rifle magnum 65000 SAAMI 63817 C.I.P. 90 JHP 3700 2737 130 HP 3295 3135 140 SP 3250 3284 150 SPBT 3136 3276 24" "Shooting Times" Pearce Lane Nosler's Model 48 Sporter and the .270 WSM Shooting Times 48 10 44–46 October 2007 http://www.shootingtimes.com / Accurate Powder "270 WSM reloading data https://web.archive.org/web/20070930184747/http://www.accuratepowder.com/data/PerCaliber2Guide/Rifle/Standarddata(Rifle)/277Cal(7.03mm)/270%20WSM%20Jul%202004%20.pdf# 2007-09-30 " from Accurate Powder 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.Sporting Arms and Ammunition Manufacturers' Institute https://web.archive.org/web/20080713123611/http://www.saami.org/ July 13, 2008 It is a member of the Winchester Short Magnum family of cartridges. Overview 80px|left|.270 WSM left, .270 Win on the right When it was introduced, the 300 WSM sported a new case that showed a lot of promise for uses in other calibers. In 2002 Winchester introduced new cartridges in its Winchester Short Magnum family, including the 7 mm WSM and 270 WSM. This new .270 cartridge was the third commercial .270 ever produced, and the first one in 60 years. 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 m/s on faster, in a cartridge that is shorter and can therefore be used in a shorter action resulting in a more compact rifle if desired. Performance The .270 WSM is the only cartridge of the WSM family that produces notable ballistic gains over other existing cartridges. It is the best performing short action on the market. The .300 WSM closely mimics the long-popular .300 Winchester Magnum, while the 7mm WSM matches performance of the 7mm Remington Magnum in similar barrel lengths. The .325 WSM is in a league of its own in North America as the 8 mm caliber has not become commonplace.http://www.chuckhawks.com/short_magnums.htm Short Magnums The .270 WSM comes quite close in performance to the legendary .270 Weatherby Magnum, with notable differences being that the .270 WSM is chambered in a short action and normally utilizes a 24" barrel whereas the older Weatherby cartridge utilizes a long action and is most commonly paired with a 26" barrel.October 2019 The .270 Weatherby has a belt and the .270 WSM does not. See also List of rifle cartridges Table of handgun and rifle cartridges 7 mm caliber 6.8 Western Delta L problem References External links The 270 WSM by Chuck Hawks 270 WSM Accuracy in Browning X-Bolt https://web.archive.org/web/20111118101006/http://www.thediyhunter.com/243-wssm-general-hunting-shooting/30-accuracy-xbolt-stainless-stalker-270-wsm-review 2011-11-18 Category:Pistol and rifle cartridges Category:Winchester Short Magnum rifle cartridges