30-06 is a good all around caliber.7Mag is to.Check out the the tikka t3 thread. Since I read it I've bought 2 tikka's and love both of them. For the $ you can't beat the gun or accuracy.I own a rem700 as well and love it to.As far as scopes, your gun is only as good as the scope on top of it. Do some looking around.I like Leupold and Zeiss's myself. The Zeiss conquest and Leupold Vari X II line are great scopes for the money. I have a Meopta Meostar on one of my Tikka's and it is super clear. They are a little more $$ though. Good luck.