If you are going to be chasing bears in the swamps of maine you might want to rethink your whole scenario. Generally your bigger bears will come to bay in the thickest nastiest places they can find. Your shots will usually be limited to 40 yards or less. These long barreled bolt guns you are considering aren't all that handy in these situations especially if topped with high powered optics. If you were bait hunting and have time to set up your shot fine. What you will find most hound hunters using in the thick area's are open sighted short barreled larger bore carbines. The old 35 remington pump and if you can find one remingtom chambered the 760 pump in 30-06 in a 18" barreled model. Your shots can come very fast and unpredictable and sometimes much closer than you want. Believe me, been there and done that. You are looking at 2 very different types of hunting for 2 different animals. Might want to look at 2 rifles suited to there perspective jobs instead of compromising. Yes for deer the 270 win. is an excellent choice.