ORIGINAL: SPIKEHORN11
What is a good caliber for black bear and whitetail deer? I have a .243 but I am guessing that it is too small for bear.
IMO, your guess is correct. I'd recommend such as the 280Remington, 308Win., and the 30-06. With the heavier bullets available in these three (160gr., 165, 175, 180's) they will handle the bears, and of course, are plenty for any deer.