Whenever I go after game that has the propensity to scratch and bite or at least come over and personally discuss the fact that I poked a hole in it's hide I prefer bigger bullets and heavy construction. The 243 will kill a black bear, but the opportunity for the bear to escape and/or come back to bite you with a less than perfect shot is a definite possibility. My springoff wants to go bear hunting but not until I get him a bigger rifle than the 243. He shoots the smallbore like a sniper, but the bullet hole is little bigger than a 22, and nobody goes after bruins with a 22. Even with premium bullets you are handicapping yourself, and making a clean one shot kill on game is the goal of ANY ethical hunter. Pick a bigger, better caliber and save the 243 for deer and coyotes.