If you shoot that gun well, I can,t see a reason in the world to switch. That 338 shoots plenty flat for what you need and then your set for any game in North America. Get a good reloader and some of the middle wieght bullets and go for it. Of course you can,t go wrong buying another gun for just deer and that size game. However since you already have the 338 for the big stuff, just go with a 7mm-08 or 270-280 or 30-03. Just my Idea. I cover all the bases with a 300 Win Mag, 260 Remington, 250-3000 Savage and a heavy barrel 223 bolt action Savage rifle. For the real big stuff I still have my 45-70. I load the 350 grain round nose Hornady for the 45-70. I load it at 1900-2200 fps.