I've always been fond of the .308. Economical to shoot and reload. My Kimber Montana weighs in just over 5 lbs. making it a dream to carry and shoot. Sure the ballistics aren't the flattest but has gotten the job done on many moose and caribou. I have another Kimber chambered in .338 Winchester magnum that weighs closer to 7 lbs. and truth be told that is the rifle I want to be carrying should I ever get sideways with a ticked off grizzly. The real ticket is playing around with the loads to find the particular rifle's 'sweet spot'. Makes a big difference using the right load for the rifle regardless of caliber IMHO.