Skip to main content

.270 Winchester Short Magnum

Overview

The .303270 BritishWinchester Short Magnum or 270 WSM is a short, magnum cartridge created by necking down the .303-inch300 (7.7Winchester mm)Short calibre.Magnum Itand wasfitting firstit developed in Britain aswith a black.277 powdercaliber roundbullet. putThe intocorrect service in December 1888name for the Lee–Metfordcartridge, rifle., Inis 1891270 theWSM, cartridgewithout wasa adapteddecimal to use smokeless powder.point. It wasis a member of the standardWinchester BritishShort Magnum family of cartridges.

The 270 WSM is an improvement over the older 270 Winchester providing higher velocity with bullets of the same weight, and Commonwealththus militarya flatter trajectory and more energy. Velocities tend to be about 250 ft/s (76 m/s) faster, in a cartridge fromthat 1889is until the 1950s for riflesshorter and machinecan gunstherefore whenbe it was replaced by the 7.62×51mm NATO.

It is stillused in commona useshorter action resulting in civiliana shootingmore andcompact isrifle alsoif frequently seen in the hands of insurgencies around the world.

 desired.

Stats

Ammunition Type Damage Bullet Velocity (m/s) Barrier Penetration
Armor90gr PiercingHollowpoint3011001.55
215gr130gr HollowpointSoftpoint 1935 5201004 1.6496
MkXI140gr Light BallSoftpoint 10.341 1015990 1.6542.1
MkI150gr BallMatch 13.344 815956 3.654
MkVIIIZ Enhanced Ball16.27772.725
MkVIIY Incendiary Ball167544.25
WEX AP Ball10.291410.8951.1
Note: Barrier penetration represents the rounds ability to go through walls and barriers. Armor piercing represents the rounds ability to penetrate body armor plates.

Range Cards

90gr Hollowpoint
130gr Softpoint140gr Softpoint150gr Match
image.png

image.png

image.png

image.png

 

Back to top