I own a custom 350 with 20" barrel on 600 action with a Kevlar stock, I love it. It shoots like a varmint rifle several loads less than 1/2 inch groups at 100 Meters.
To buy something off the shelf -- I think the 700 Classic in 350 RM would be very nice. Only thing I'd do to one would be to free float the barrel and glass the action. If you live in Alaska and/or carry it in the rain a lot, I add a fiber glass or Kevlar stock.
I use car wax on my blued steel rifles in inclement weather.
