Wsm 2008 Winner
Re: 300 wsm vs 30-06 The WSM is better than the 06 for certain bullet weights, just like the 308 excels with 155's and the 06 is a little lacking for that lower weight bullet from my experience. At 168 the 308 and 30-06 seem to be even from what I've shot first hand between my 06 and my dad's 308. Lithuania: 2009, 2010 & 2012 World's Strongest Man champion 2nd place 2002, 2003, 2004, 2011, 2013 World's Strongest Man 7-time winner of Arnold Strongman Classic from 2003–2008, and 2014, 2nd place 2010, 3rd place 2011.
| 270 Winchester Short Magnum | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Rifle | |||||||||||||||||||
| Place of origin | USA | |||||||||||||||||||
| Production history | ||||||||||||||||||||
| Designer | Winchester | |||||||||||||||||||
| Designed | 2002 | |||||||||||||||||||
| Produced | 2002 | |||||||||||||||||||
| Specifications | ||||||||||||||||||||
| Parent case | .300 WSM | |||||||||||||||||||
| Case type | Rimless, bottleneck | |||||||||||||||||||
| Bullet diameter | .277 in (7.0 mm) | |||||||||||||||||||
| Neck diameter | .3140 in (7.98 mm) | |||||||||||||||||||
| Shoulder diameter | .5381 in (13.67 mm) | |||||||||||||||||||
| Base diameter | .5550 in (14.10 mm) | |||||||||||||||||||
| Rim diameter | .535 in (13.6 mm) | |||||||||||||||||||
| Rim thickness | .054 in (1.4 mm) | |||||||||||||||||||
| Case length | 2.100 in (53.3 mm) | |||||||||||||||||||
| Overall length | 2.860 in (72.6 mm) | |||||||||||||||||||
| Rifling twist | 1-10' | |||||||||||||||||||
| Primer type | Large rifle magnum | |||||||||||||||||||
| Maximum pressure | 65,000 psi (450 MPa) | |||||||||||||||||||
| Ballistic performance | ||||||||||||||||||||
| ||||||||||||||||||||
| Test barrel length: 24' Source(s): 'Shooting Times' [1] / Accurate Powder [2] | ||||||||||||||||||||
The 270 Winchester Short Magnum or 270 WSM is a short, unbelted, 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] It is a member of the Winchester Short Magnum family of cartridges.
Overview[edit]
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.[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 shorter and can therefore be used ina shorter action resulting in a more compact rifle if desired.
Wsm 1997
Performance[edit]
The .270 WSM is the only cartridge of the WSM family that produces notable ballistic gains over other existing cartridges. 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.[4]
The .270 WSM comes quite close in performance to that of 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.[citation needed]
Wsm 2008 Winners
See also[edit]
References[edit]
- ^ abPearce, Lane (October 2007). 'Nosler's Model 48 Sporter and the .270 WSM'. Shooting Times. 48 (10): 44–46.
- ^'270 WSM reloading dataArchived 2007-09-30 at the Wayback Machine' from Accurate Powder
- ^Sporting Arms and Ammunition Manufacturers' InstituteArchived July 13, 2008, at the Wayback Machine
- ^http://www.chuckhawks.com/short_magnums.htm
External links[edit]
- The 270 WSM by Chuck Hawks
- 270 WSM Accuracy in Browning X-BoltArchived 2011-11-18 at the Wayback Machine
