Your splitting hairs on that one....Every single one of those rounds will drop a deer with ease out to 150+.

Its more personal preference. 308 is a great short round for whitetail and the 270 along with the 30-06 are probaly the 2 most popular long rounds for deer hunting and larger game in North America.

308 will be in 30 caliber and have a variety of rounds available for it. I have many friends who use 308 and 7mm08 as their primary deer rifles they get the job done.

Lots of others in our hunting club use 270,243, 25-06 and 30-06 all get deer...

I personally have been using a 270 for whitetailpast 3 seasons and love it. 130gr bullets put em too the floor.