For typical deer hunting, the .257Roberts is all that you need. I've taken 5 deer between 180-300+yrds with my Ruger m77 Roberts and the hornady 117grn spbt going mid 2700fps. 3 out of the 5 never took another step.
You can carry it in a light rifle, get light recoil, and better bullet weight than the 6mm's. My Ruger has shot 3 different loads at or under 1 moa. My best group to date is .278" @ 100yrds.
My favorite quote about the Roberts:"It'll dance with the .270." and it does.
No need for special bullets, bonded, tipped, mono metal, etc. The cartridge delivers great trejectory without applying too much force on standard bullets, which would lead to bullet failures, blow ups, etc. My wife and 11yr old daughter also hunt with it, and no worries about recoil, or not holding up its end of the bargain.
When I bought it I was looking for a step down from my 300winmag, and I've been very happy with it.
I shot a 149" buck and two does with it this past season.
