I agree with the notion the 375 H&H is a better choice. It's felt recoil is less than the 340, and it has a bigger bullet. Also, ammo is available everywhere. However, like most everyone here will say, the 30 cal and up rifle that you can shoot best will be your best choice.
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<br>BTW, I have become very skeptical of manufacturers claims, especially Wby's velocity claims.
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<br>Blaine