re: Best .270 Ammo?

I agree with the others that any good cup and core bullet will work if you hit the vitals. I hunt with the Hornady 140 BTSP but I usually can wait for a good broadside shot. I have dropped them on the spot with shoulder shots regularly.

If you are having to take frontal shots or tough angling I'd move up to a 150 grain to ensure penetration from any angle. A 270 with a 150 grain bullet will kill any whitetail hit in the front end.