re: Need advice on a long range rifle

You're asking a lot of a single gun to handle deer hunting (at ranges to 300+ yards), as well as moose, bear and etc. Stay w/ the 270 Win you're already familiar w/ for your routine deer hunting. You're not really going to gain any significant advantages over the 270 Win by going to a 7 Mag, 300 WM, etc for your type of deer hunting. For moose and bear, get a 338 Win Mag.