When I was getting that first "do-it-all" gun, I got a .30-06. I have since added a .223, a .243, a 7mm-08, a 7mm Rem Mag., and a .308 to the collection... If you're considering either a .308 or a .30-06, either will do what you've described. So will pretty much any modern cartridge of greater than .277 caliber... i.e. .270 Win, .280, 7mm-08, 7mm RM, etc., etc., etc...