Change this to .300 Win.Mag vs. .340 Wby and you'll have yourself a contest!

but .300wm vs. .338wm, .300 win.mag all the way!

the .338wm is a 210/225gr bullet cartridge IMO, the .340 is a 225/250/275grainer, and if you're just gonna be shooting 210's out of a .338wm, I say just get a .300wm with 180/200 which would be heavy for caliber vs. light for caliber.

To me the .300wm, 338wm, 340wby all kick, and if you're not recoil sensitive, get yourself a .340wby! If you can shoot a .300, you can shoot a .338, IMO my .340 is more pleasant to shoot than my .300win.mag.

btw case capacities...
.300wm 90.4
.338wm 85.6
.340 wby 102.1

the .338wm has about the same as a .257wby! .338 is shorter than the .300wm.

I do love 338's though, so picking a .300wm over a .338 is hard to do, it would be hard to go wrong with any of the 3...

I believe they say the .340wby shoots as flat as a .270 but with 100grains more of bullet weight!

Btw the 7mmRM with 175gr vs. .300wm with 180grs, is not a whole lot different...I think you need a .338 caliber....then you'll have North America covered...since brown bear starts at 338cal...

.340 Wby.!!!! (1st Place)

2nd Place.....300 Win.Mag.
3rd Place......338 Win.Mag.

http://www.weatherby.com/product/amm...rtridges/40331
http://www.chuckhawks.com/340Wby.htm