WSM, stands for Winchester Short Magnum.
Winchester Short Magnum- refers to a family of cartridges.
WSM - AM - was created on 1925-10-05.
WSM-FM was created on 1962-11-01.
The .270 is a necked down 30-06. .270 WSM is a necked down .300 WSM. The 270 WSM is faster than the .270, and has a shorter case.
Lead, Round Nosed
WSM = Winchester Short Magnum. A variety of WSM cartridges exist, i.e., 270 WSM, 300 WSM, 338 WSM BOSS = Ballistic Optimizing Shooting System. It is a a 3.5-inch long combination muzzle brake/weight. It threads onto the end of your barrel. By changing its position along the threaded muzzle, you change the length of the barrel and subsequent vibration/harmonics.
XTP = Extreme Terminal Penetration
No. The WSM stands for Winchester Short Magnum. They are not interchangeable.
No, .270 wsm and .270 winchester are not the same.
1906... the year the cartridge was developed.
"WSM"