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Short Magnums:
223 WSSM - 243 WSSM - 25 WSSM
270 Winchester Short Magnum
7mm Winchester Short Magnum
300 Winchester Short Magnum
325 Winchester Short Magnum
7mm Winchester Short Magnum:

The 7mm Winchester Short Magnum is a new twenty-eight caliber centerfire rifle cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2001. The new 7mm short magnum cartridge is chambered in Winchester's Model 70 bolt action rifle. The 7mm WSM is a commercial cartridge based on the 404 jeffery cartridge case, shortening to 2.100" and necking down to .284" caliber and sharpening the shoulder angle to 35 degrees. The new 7mm WSM cartridge offers plenty of case capacity for tailored handloads. The 7mm WSM cartridge achieves its useful purpose as an excellent long range cartridge for, mule deer, sheep, black bear and elk, .284" caliber is a time proven caliber for elk and deer size game animals.

 The 7mm WSM cartridge is a well thought out cartridge as Winchester is no stranger in .284" caliber cartridge development. Winchester has now developed 2 cartridges in this caliber; (284 Winchester in 1963), and (7mm WSM in 2001). The 7mm WSM factory loadings show a velocity of 3,225 feet per second for a 140 grain bullet for deer and sheep hunting and this translates to moderate recoil for the shooter with plenty of bullet energy at the 500 yard mark to flatten a larger deer size animal.

 The 7mm WSM cartridge, chambered in a short actioned light-weight rifle may well be the ultimate combination for a superb mountain rifle, that offers a slight increase in bullet frontal mass and energy than that offered by the 270 WSM in rugged terrain and most rifles chambered in this cartridge show plenty of accuracy with long range 160 grain weight bullets.

Ballistics:
This is a ballistics chart for the 7mm Winchester Short Magnum rifle:
Rifle barrel length: 24 Inches.
Ammunition: Winchester 140 grain Ballistic Silvertip bullet.
Bullet diameter: .284 inch.
Bullet weight: 140 grains.
Bullet ballistic coefficient: .460.
Rifle zero: 240 yards, 2" mid-range rise.
Range Muzzle 50 yds. 100 yds. 200 yds. 300 yds. 400 yds. 500 yds.
Bullet Velocity: 3,225 fps. 3,115 fps. 3,008 fps. 2,802 fps. 2,605 fps. 2,416 fps. 2,236 fps.
Bullet Energy: 3,233 ft.lbs. 3,016 ft.lbs. 2,812 ft.lbs. 2,440 ft.lbs. 2,109 ft.lbs. 1,815 ft.lbs. 1,553 ft.lbs.
Bullet Drop: - 1.8" + 0.4" + 1.7" + 1.4" - 3.4" - 13.4" - 29.3"

This is a ballistics chart for the 7mm Winchester Short Magnum rifle:
Rifle barrel length: 24 Inches.
Ammunition: Winchester 160 grain XP3 bullet.
Bullet diameter: .284 inch.
Bullet weight: 160 grains.
Bullet ballistic coefficient: .512.
Rifle zero: 264 yards, 3" mid-range rise.
Range Muzzle 50 yds. 100 yds. 200 yds. 300 yds. 400 yds. 500 yds.
Bullet Velocity: 3,050 fps. 2,955 fps. 2,862 fps. 2,683 fps. 2,510 fps. 2,344 fps. 2,184 fps.
Bullet Energy: 3,306 ft.lbs. 3,102 ft.lbs. 2,910 ft.lbs. 2,557 ft.lbs. 2,238 ft.lbs. 1,951 ft.lbs. 1,694 ft.lbs.
Bullet Drop: - 1.8" + 0.8" + 2.5" + 2.5" - 2.3" - 12.7" - 29.4"

7mm Winchester Short Magnum Reloading:

Bullet Diameter: .284 Inch.
Maximum Case Length: 2.100 Inches.
Trimmed Case Length: 2.090 Inches.
Primer Size: Large Rifle.
Maximum Cartridge Overall Length: 2.860 Inches.

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Calculating Kinetic Energy
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Centerfire Rifle:
Centerfire Rifle Ballistics:
Centerfire Rifle Cartridges:
17 Rem. - 204 Ruger - 22 Hornet - 222 Rem.
223 Rem. - 22-250 Rem. - 220 Swift - 223 WSSM
243 Win. - 6mm Rem. - 243 WSSM - 240 Wby. Mag.
250 Savage - 257 Roberts - 25 WSSM - 25-06 Rem.
257 Wby. Mag. - 6.5 x 55mm - 260 Rem.
6.5mm Rem. Mag. - 264 Win. Mag. - 6.8mm Rem.
270 Win. - 270 WSM - 270 Wby. Mag. - 7mm-08 Rem.
280 Rem. - 7mm Rem. Mag. - 7mm WSM
30-30 Win. - 308 Win. - 30-06 Springfield
300 Win. Mag. - 300 WSM - 300 Wby. Mag.
325 WSM - 338 Win. Mag. - 340 Wby. Mag.
357 Mag. - 44 Mag. - 444 Marlin - 45-70 Government