Let's assume that the original poster has asked a serious question, and deserves a serious reply. Under the circumstances he has outlined, just about all 9mm loads, SP, HP or whatever, of any weight, are inadequate to HUNT bears. But if that was all I had, and shooting was my ONLY defensive option, I would shoot fast and often at the head. Most of the bears I have seen shot, or known about the shooting of, have been at close range (bait or dog hunting here in Maine.) .357's are marginal...one bear in a dog melee took six through the body before a final one in the earhole stopped it. Still, one guide I know routinely finishes off bayed bears with a .357 Ruger, at contact range. Shooting a bear at 100 yards with a .357 isn't something I or any honest guide would countenance, however. A 9mm WILL penetrate a bear's skull. From the side, aim just below and forward of the ear. From the front, the center of the nose. A bear's brain is lower inside the skull than it looks. Yes, you can kill a bear with a 9mm...if you HAVE to. But it's by no means a sure thing, just a better thing than taking a mauling without fighting back. You should also know that black bears don't stop attacking if you lie still, as browns/grizzlies have been known to do, they will fight til put down. The poster also mentioned '...other predators'. The HP would be adequate for anything less than bruin, except perhaps a rutting moose bull or angry cow moose mother. --slabsides