A 30-06 is plenty for any bear that walks, especially at shorter ranges, Like the guys said above, I readily agree that cup and cor bullets like tot Remington Core-Lokt 180 is good. I prefer premium bullets, especially on bears, and more especially if I were going on a trip. See how your rifle likes the Nosler Partition, Barnes TSX, Swift A-Frames, etc. Most guides like to either break a bear down (smash the shoulders), and or two holes (entrance and exit). Bears can "plug up" and not leave a lot of blood sign, so shot placement and bullet performance matter. I dug a bear our of the thickest brush I ever saw a few years ago. I found blood, but he was runnning when he disappeared. I found him dead, thankfully, but the taxidermist found 8 holes (4 entrance, 4 exits), all in the heart-lung area, all with a .450 Marlin handload. This was a chance encounter, and not a "set-up shot" like would be the case over bait. Point is, just about any factory load will shoot well enough at bait ranges, so choose your shot, and bullet wisely. Great luck on your hunt.