The 7MM-08 is a really good "all-around" deer cartridge! It is flat shooting, and has mild recoil too.
As frizzellr said, all centerfire guns are loud, and the exit wound is relative to the bullet style that you are using. Larger bullets don't always mean large exit wounds. Use a good bullet style such as a "core-loct" and you will have the right size exit hole that you will need to have when tracking a deer. Good luck!