Phoneman...the new Hornady ammo should be good for deer sized game out to 200 yds. and should be great for black bears over bait as well. IMO, I don't think it's the .30-30 or .35 is the right load/caliber for a spot/stalk type hunt where you could have a longer shot. The Buffalo Bore load Greaybeard suggested is better, but I don't have any first hand knowledge/experience on how it would perform at 200 yds., so I'll reserve comment.
Regarding the new Hornady ammo, the jury is still out! We should have alot of input after, and during, the upcoming hunting season. I will be trying it also and I hope I get a chance to use it.
I would think an '06 or .308 would be a good choice for a spot/stalk type hunt. Granted I am partial to both. I took my bear over bait with an '06 through both lungs. He was dead on his feet and went only about 50 ft.
If I were planning your type hunt, I'd plan for the worst case scenario...a better than average size bear, at 200-250 yds., that will not give you a chance for a closer shot. Personally, I'd opt for the '06, but either of these calibers will work nicely. Its better to have a little extra 'juice' and not need it, than the reverse. You don't want to take a chance on loosing a bear, any bear, because the load/caliber used was too light.
As far as the type of rifle, my preferences are pumps and semi-autos because I like to have a fast follow up shot if needed. The rifles I have shoot very well. Let us know what you decide.
Good luck...NYHunter
PS Unless you make a head, neck, or spine shot, or break both shoulders, 99% of the time bears will generally run even when hit well, so don't panic. They don't go far!