Having hunted both, the 338 Win Mag is a real pussycat compared to the 340 Wby. I am not one who is recoil shy in the first place, however accuracy achieved with the 338 Win Mag is excellent because it does have a milder repor and can be dialed in from the bench quite nicely.
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<br>Today, I should think the 338 Ultra would be more suitable than the 340 Wby. I am not a real fan of freeboring, as such, the 338 Ultra has no belt and is headspaced on the shoulder. A better setup for accuracy in a long range thumper does not exist (5,000 ft-lbs of ME). That said, the 338 Win Mag probably displays the best accuracy of all .33s and thats simply because it shoots milder than the rest. The case, even though wearing a belt is a good one producing excellent speed and accuracy in the .33s. Todays factory loadings with mixed powder propellents put the 338 Win Mag in new unchartered waters with Hornady's 225 grain at 2950 fps and now Federal pushing 250 grains at 2800 fps. What more do you really need.
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<br>If I wanted a really fast .33, the Ultra is the call. The 338-378 Wby is a beast and requires most shooters to brake it for accuracy and handling. Again, freeboring is not my bag.
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<br>Factory loaded ammo does not really give much of an advantage over the 338 Win Mag. With 250 grain factory loadings, here's the scoop.
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<br>REM-338 Rem Ultra Mag, 250gr Swift A frame - 2860 fps
<br>Wby-340 Wby, 250 grain Part - 2941 fps
<br>Wby-338-378 Wby, 250 gr Part, - 3050 fps
<br>Fed-338 Win Mag, 250 Part, - 2800 fps
<br>Dakota - 330 Dakota, 250 Nos Part, - 2800 fps
<br>Norma - 338 Lapua, 300 grain load - 2800 fps
<br>Lazzeroni - 338 Titan, 250 grain Swift A - 3150 fps
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<br>Handloading would open a whole new ball game for some of the big cased offerings, however, the 338 Win Mag with it's many factory offerings and handloadings may still be the most accurate of the bunch and will kill any game the above is attempting. Many Cape Buff have been killed with the 338 Win Mag, so don't be lead to believe that somehow your hugely handicapped by carrying a 338 Win Mag.
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