Ok ,I'm asking this for a buddy at work,and I'm sure it will cause all sorts of hate mail. He sold a couple of guns and wants to pick up a mid range ,low recoil shooter. He will use it on deer ,varmints and possibly on elk. Of the calibers listed above ,which would you choose,and why. I own 3 of them and he has shot those ,but the jury is still out. It will be a bolt gun of some make. Least he didn't ask about a 270. Thank you ,and he'll be reading this with interest.