If you can find one a 35 whelan in a rem 7600 could just be the best of both worlds. Guarantee it will thump the biggest of blackie's as well as moose, etc.

In terms of black bears I think the 3030 for what your wanting is more then adequate, hell as a guide it was whatItoted when tracking clients bearsin northern saskatchewan. Never needed it aswe instructedthe clients not to take poor % shots such as full frontal chest hits, regardless of the weapon. FACT is no matter how big a black bear if you take out the lungs or heart he will die very quickly, black bears are not that terribly tough to kill contrary to what some may believe. The only reason why I would ever consider taking a full frontal shot on a bear is self defense(aka last resort). When your talking about a hunting situation where the bear is a 100 yards away you aren't in a self defense situation. Why b/c if downwind they would be gone if concerned and if not could careless of your presence at that time. Their eyesight is poor so seeing you with your rifle trained on them isn't a worry either. Hearing while good the fact they are still there means you have some time to wait and see. In terms of 100 yards the 3030 with a 170gr bullet is capable. A marginal shot isn't any lessmarginal with a bigger stick. It's called hunting for a reason sometimes your the boot and others your the @ss.

FWIW, when I hunt bears its with a bow (no sidearms allowed here), I have been in close quarters with many bears as a result. Of which some have acted very aggressive to my presence including: climbing my tree, bull rushing, etc. WhileI respect every bear the only onesI trulyfear are sows with cubs, you need to make darn sure you know where them cubs are in relation to momma and you.

Good luck