well in my opinion the 06 would be good for deer and larger game at medium ranges, but the 308 would be good for deer and smaller game at longer ranges, lots of my family own 308 and 30-06's and shhot them ion match compettions and the 308 is shoot out to 600 yds,but they stop the 06 at 200 yds so the 308 is a hands down longerrange cartridge. also if ur stil open to suggestions id look inot the 7mm-08 its a 7mm(.284 caliber) in a necked down 308 casing the bullet is smaller and would have better velocity and good nock down power.but ill always keep my 7mm rem mag as my deer gun.