Greetings,
This debate has been on going for 100 years now. At the start it was the .30-06 v .270 with the .308 replacing the .30-06 over time. Initially the flatter trajectory of the .270 tipped the balance in the .270's favour. In those days rifles were often shot with iron sights or basic scope sights and point blank range was an issue. Today with laser rang finders and dial up scopes the .308 has edged slightly ahead. Most .308 rifles with a 10" or faster twist will handle higher BC projectiles than the standard 10" twist in the .270 but the difference is marginal.
Around 50 years ago I was faced with the same decision. In the end the choice was made for a new Remington 700 in .308 for about $240.00 v a Winchester M70 (post 63) for about $30.00 more. Price alone was the decider and the rifle is still here. Dumb luck I suppose. My choice for a NI hunting rifle would be the .308 but I could be biased. If you get into the long range stuff you will almost certainly get a rifle for that purpose and it won't be a .270 and likely not a .308 either.
Best of luck and regards Grandpamac.
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