RE: black bear shot placement
The last one I shot was in the top of the head with a 350 grain 45-70 bullet. The bullet went down through the neck and was found under the hide between the front legs. It was a 500 lb Bear and believe me he never took a step or even twitch. It was about a 30 yard shot.
The boiler room shot should work well also. They do live in heavy cover and can be hard to track. Be ready for a quick second shot if needed. The Marlin Lever in 45-070 or 450 Marlin just screams out for this kind of work. I always felt good packing the 7600 30-06 as well.