I'm sure this question will provoke a lot of opinions. Asking about a preference for a particular caliber usually does.
Here's why I'd go with the .308. It'll effectively knock down any game in No. America with proper shot placement. It shoots slightly flatter than the 30-06 with less recoil too. Inexpensive military ammo is available for target shooting. Ammo is also carried by most stores so if your on a hunting trip and run out it should be easy to fnd.
Hope this was of some help.
Ant
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