If recoil is an issue, go with the 308. You will not see much difference though, but some. The .270 kicks like an 06. I have all three and prefer the 06, but thats just me. About the only commercial ammo you will find for the .270 is 130 and 150 gr bullets. I prefer the 130. To get the most out of any rifle, hand loading is the key. The 308 caliber is my choice primarily because it retains energy better further down range and because bigger bullets make bigger holes.