.300 WSM

.300 Winchester Short Magnum (also known as .300 WSM, commonly pronounced as "Whizzum") is a .308 caliber short magnum cartridge that was introduced in 2001 by Winchester Repeating Arms Company. The cartridge overall length is 72.64mm, cartridge case is 53.34mm in length and the bullet diameter is 7.84mm.

Use & Performance
.300 WSM is used in the Western United States for elk, mule deer, and whitetail and on the plains, where long range shooting is a must. Also, although relatively new, the 300 WSM has already had some success in benchrest shooting.

The .300 WSM is a Delta L problem cartridge, meaning it can present unexpected chambering and/or feeding problems. The Delta L problem article explains this problem in more detail.

Muzzle velocity

 * 10.69 g (165 gr) Full Metal Jacket(FMJ): 3,125 ft/s
 * 11.66 g (180 gr) Full Metal Jacket(FMJ): 2,970 ft/s

Categories
Cartridge:rifles