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325 WSM History And General Information:
Centerfire Rifle Cartridges - Short Magnums
Written by: Kim Lockhart, Copyright.

325 Winchester Short Magnum:
 The 325 WSM is a new centerfire rifle cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2005.

 The 325 WSM is a commercial cartridge based on the 404 jeffery cartridge case, shortening to 2.100" and necking down to .32 caliber and sharpening the shoulder angle to 35 degrees, the new 325 WSM cartridge has enough case capacity for all of its offered bullet weights which also offers good effective down range bullet energies.

 The 325 WSM cartridge achieves its useful purpose as an excellent all around cartridge for all of North American big game species, from white-tailed deer to moose and bears.

 The 325 WSM cartridge is a very well thought out cartridge as Winchester recognized the need for a cartridge in their Winchester Short Magnum cartridge platform capable of launching 200 plus grain bullets with high inherent accuracy plus energy levels capable of stopping the largest North American game. The 325 WSM does all of this with lower perceived recoil in a lightweight rifle design.

 The 325 WSM is an ideal cartridge for the serious elk, bear, moose or other large and dangerous game hunter where a lightweight short magnum rifle is desired, delivering almost 2 tons (actual 3,941 FT.LB.) of energy at the muzzle and over 1 1/2 ton (actual 3,316 FT.LB.) of energy at 100 yards with a 220 grain bullet.

 The 325 WSM cartridge offers a good balance of power with manageable recoil.

325 WSM Barrel Specifications.
Common Barrel Twist Rate - 1 in 10".
Bore Groove Diameter - .323"

325 WSM Reloading Specifications.
Bullet Diameter - .323"
Maximum Case Length - 2.100"
Trimmed Case Length - 2.090"
Primer Size - Large Rifle

325 WSM Loading Data Hints.
 The 325 WSM cartridge responds well to IMR 4350 powder delivering high velocities with excellent accuracy within the 150 - 165 grain bullet weight range.

325 WSM Reloading Data.
Hodgdon Reloading Data Center.

325 WSM Trajectory and Hunting Applications.

 This is a down range trajectory chart for the 325 WSM cartridge with the scope mounted 1.5 inches above the bore center line plus if you were using this load, its effective hunting bullet energy range with well placed shots on,
Deer size game, such as Antelope, Blacktail, Hogs, Javelina, Mule, Whitetail.
Elk size game, such as Caribou, Black Bear, Sheep.
Bullet diameter .323"
Bullet weight 180 grains
Bullet ballistic coeffecient .438
Bullet velocity 3,060 feet per second
100 yds.
200 yds.
300 yds.
400 yds.
500 yds.
+ 1.4
- 6.4
- 18.7
- 38.0

Rifle Ballistics:
.32" Caliber
325 WSM
.33" Caliber
338 Win. Mag.
340 Wby. Mag.

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Rifle Cartridges And Reloading - Rifle Cartridges And Ballistics