My brother doesn't have a bolt gun and is wanting to get into big game hunting and somewhat long-range shooting. He wants to try to find a gun that he can use to easily take a variety of big game with across a variety of ranges. A jack-of-all-trades, if you will. We're going deer hunting here in GA next week and would like to be able to hunt bears, elk, moose, etc. farther north and out west in the coming years without having to buy a new gun. His budget is about $450. What would be the calibers that wouldn't require pinpoint accuracy to achieve a quick, clean kill? And what bolt guns would be accurate, reliable, and won't have rust issues? Does such a gun exist?
