Go to your saved Cartridges

Your Armory

  • Your Armory is empty.

Can't find what you're looking for? Open a ticket and we will help you find it!

300 Winchester Short Magnum

300_wsm

Introduced in 2001, the 300 WSM was standardized to allow short-action rifles to generate performance approaching what a long-action gun could do when chambered for the 300 Win Mag. The 300 WSM gives up very little to the 300 Win Mag.

After shooting otherwise extremely similar rifles side-by side with original factory ammo loaded with the same 165-grain bullet I observed that the WSM generated noticeably less felt recoil. The difference far exceeds what would be expected based upon the modest difference in velocity and charge weight.

This makes sense theoretically, because the shorter fatter case with a wider shoulder traps more of the charge behind the shoulder so less unburned propellant is initially accelerated into the bore, so initial accelerating mass is less. What one feels most, as unpleasant recoil, is how fast the gun initially accelerates before it solidly bonds with the shooter’s shoulder.

 


 

I personally like the 300 WSM and the 7mm WSM. I especially prefer these for chambering in standard-length actions where long, heavy bullets can be seated out to take advantage of allowable magazine length. As such, with heavy bullets the shorter case has an advantage. Such loads have set many records in 1000-yard target competition.

An improved 300 WSM chambered in a custom Savage, Ackley-Improved case-taper and a hemispherical shoulder, holds the distinction of being the only gun ever to make consecutive hits at the famous Gateway (Colorado) Dynamite Shoot on the Big-Dog targets. These were pop cans filled with blasting jell and located half a mile away on a steep transverse hillside 11-degrees above the shooting benches. There were no wind flags.

The game allowed each shooter two shots per turn and then the rifle had to leave the bench for at least one intervening shooter using a different gun.

After the various competitors had fired 274 shots at the hot target, my son hit it on his first shot and then hit the next target, located about 20 yards closer, on his second shot. He thereby won, first, the biggest pot ever $276; then, second, the smallest pot ever (zero!, well, he got an, I Hit the Dynamite, cap).

As a charitable event, half of all pots when to support the local volunteer fire department of a rural area without any tax base. Unfortunately, after persevering for more than half a century, the event is no more (the dynamite man had to retire and they could find no one willing to succeed him).


The text associated with the cartridge description reflects opinions and conclusions of the author, M.L. (Mic) McPherson. Lee Precision and its employees do not necessarily either agree or disagree with any of his comments. We present these with due deference to his recognized expertise in the firearms field. His acumen extends to handloading and all aspects of ballistics - internal, external, and terminal.
Die Sets
Lee Collet Necksizing 2-Die Set
90185
Lee RGB Die Set
Lee Full-Length Sizing Die Set
90942 (3-Die set)
Lee Breech Lock Die Set
Lee Ultimate 4-Die Set
Lee Loader
Single Dies
Full-Length Sizing Die
91077
Sizing Die
Neck Sizing Die
91019
Undersize Sizing Die
Charging Die
90194 (Long Charging Die)
Seating Die
91440
Factory Crimp Die
90331 (Collet Style)
Taper Crimp Die
Inline Bullet Feed Die
Die Accessories
Guided Decapper
91580
Undersized Flash Hole Decapping Mandrel
NS5338
Undersized Mandrel
90480
Case Conditioning Tools
Case Length Gauge and Shell Holder
90034
Quick Trim Die
90484
Presses
Reloader Press (50 RPH)
Hand Press (50 RPH)
Challenger Press (50 RPH)
Classic Cast Press (50 RPH)
Value Turret Press (250 RPH)
Classic Turret Press (250 RPH)
Ultimate Turret Press (250 RPH)
Pro 1000 Press (500+ RPH)
Pro 4000 Press (500+ RPH)
Six Pack Pro Press (500+ RPH)
Shell Plates and Holders
Priming Tool Shell Holder
90205 (#5)
Universal Press Shell Holder
90522 (R5)
X-Press Shell Holder (APP)
91538 (#5)
Pro 1000 Shell Plate
Auto Breech | Pro 4000 Shell Plate
Six Pack Pro Shell Plate
91840 (5L)
Inline Bullet Feed
Inline Bullet Feed Die
Inline Bullet Feed Kit
Inline Bullet Feed Magazine
Bullet Casting
Classic Bullet Sizing Kit
Breech Lock Bullet Sizer and Punch
Bullet Molds

Challenger III

From $117.00

Ultimate Turret Press

From $320.00

Deluxe APP Press Kit

91898

The Lee Deluxe Automatic Processing Press gives you the same priming convenience found only on expensive progressive reloading presses.

$155.00

Six Pack Pro Press

From $400.00