My girlfriend wants to shoot a black bear with her black powder. She has an old TC .54 cal. We picked up some 375 grain bullets (the ones with what looks like shotgun shell wads around them) for it and we are shooting 90 grains of FFg powder. I talked to an older guy about it and her swears that not enough to take down a black bear at 100 yards. I had never given it a second thought after she told be she wanted to try it. We will be stalking bears on the beach in southeast so 100 yards is a pretty common shot. Just wondering everyones opinion.