I have a Marlin model 1895 45-70 guide gun I use for deer and hogs, it would be a great black bear gun. Short barrel and a lot of smack down. I have never shot beyond 100 yards with it but at 100 yards it hist where it is supposed to and if I practiced at 200 I am sure I could connect with it. The odds of that where I hunt are slim to none. I sure would take it over a 30-30 or 35 Remington any day for putting critters down.

Of the choices on your list, I would go with the Marlin Model 336.

Now, if I was going to build me a potent short-range, heavy cover hunting rifle, I would probably go with a 16.5" to 20" barreled AR-15 chambered in 450 Bushmaster, or maybe an AR-10 chambered in 45 Raptor. On either one I'd mount a good low power scope or red dot sight.

The AR would not be legal in his state!

PA, I've taken pretty much every big game animal walking on this continent from hogs to Moose with a .30-30 and would absolutely NEVER knock it. It is probably one of the most underrated cartridges out there. But in all objectivity and sincerity it doesn't have a whole hell of a lot of gusto. Same with the venerable .35REM. The newer .450MAR would be an ideal cartridge for what you are asking. Out to 200 would be a poke but a doable poke. MPBR for one loaded with a 350gr FP Interlock is 187 yards if sighted in 3 high at 100 with more than enough energy to put down anything walking on this continent. And if recoil is an issue with you, I have been told by several that own them that the recoil is not bad at all with a PROPERLY fitted rifle. A .30-30 can hurt someone shooting a poorly fitted rifle.

True, but I'm just saying what rifle I'd go with.

I can assure you that my 450 Marlin is deadly at 200+ yards. How do I know that? I've shot elk at that distance with it. I suggest you spend a little time actually investigating some rounds. How many buffalo do you think the hide hunters laid low at ranges up to 500+ yards with things like the 45-70? To dismiss a cartridge like that shows you don't know much about them.

12 gauge rifled slug gun of your choice possibly 3 power heavy black reticle or maybe green dot

A 12ga slug is pretty sketchy even at 150 yards for the average guy.

Not with the Savage 212. Not even a little bit. But that is a dedicated slug rifle not a field gun with a slug barrel slapped on. Big difference.

Ive been shooting the 220 since they came out....Shoots great, Still a little sketchy at 150 for the average guy IMO and definitely sketchy at 200.