I have one in a .357 and love it (also have several pistols in .357) I personally would not want any of those calibers for bear in a lever action. If you do not get a perfect shot all you'll get is a p.o. bear. Get the .357 for it's versatility and get an 30.06 for the bear. I love pistol calibers in a lever action, but I also want to live to a ripe old age!