Back in the 1930s and '40s, a big-game hunter named Grancel Fitz became the first man to take all 28 Boone & Crockett species. He did it with a bolt-action .30/06. Nothing has changed. If you'd like to go everywhere and shoot everything, Mr. Fitz's choice of caliber should be yours. In the hands of a good shot, there's nothing the '06 can't drop. His rifle, however, was wood-stocked and iron-sighted, and there we part company. The rifle I'd select today is the Tikka T3 Lite Stainless. It's a very light, all-stainless, synthetic-stocked gun that carries a guarantee of 1-inch MOA accuracy and will usually beat that by a good bit. It's unstoppable, unbreakable, and rustproof given minimum maintenance. At under $700 (street price) you'll have money left over for a superior scope.