The Winchester® Short Magnum family has revolutionized the ammunition industry. Winchester has proven that shorter can be better, faster, more accurate, and carry as much, or more, down-range energy as the traditional magnums ever did. And, WSM calibers do all this in a compact, lighter weight, short action rifle. A new Model 70 rifle chambered in any of the three WSM calibers will certainly be a welcome addition on your next big game hunt, providing all the accuracy and performance you could ask for in a modern hunting rifle. WSM calibers are truly the ammunition for the next generation.
WSM Ballistics Comparisons
Caliber
Bullet
Weight
(grains)
Overall
Cartridge
Length (in.)
Muzzle
Velocity
(fps.)
Trajectory
at 300 yds.
(zero 100 yds.)
Muzzle
Energy
(ft. lbs.)
270 Ballistics Comparison
270 WSM
130 grains
2.860"
3,275 fps
-8.9
3,096
270 Win.
130 grains
3.340"
3,050 fps
-10.8
2,685
270 Wby Mag.
130 grains
3.295"
3,200 fps
-9.5
2,955
7MM Ballistics Comparison
7mm WSM
140 grains
2.860"
3,225 fps
-9.1
3,233
7mm Rem. Mag.
140 grains
3.290"
3,100 fps
-10.22
2,987
300 Ballistics Comparison
300 WSM
180 grains
2.860"
2,970 fps
-11.7
3,526
300 Win. Mag
180 grains
3.340"
2,960 fps
-11.9
3,503
300 H&H
180 grains
3.600"
2,880 fps
-12.7
3,316
All specifications approximate and subject to change depending on ammunition manufacturer, barrel length, specific load and conditions. For more ballistic details visit the Winchester Ammunition website at: www.winchester.com.