Ogopogoman,
Your certainly no stranger, to Black bears from what I read in your post. The only ones that get me a little nervous is a sow with cubs.
I've see them fight a boar twice their size and kick his ars, it sounds like you will do just fine.
I hunted many times in Quebec, this year the bears were very bold. I shot this one at 11 yards
on the ground, with the LDB
This one I shot at 6-7 yards on the ground, in 2005.
I will be hunting Alaska, next June for Black Bear, on the ground, Lord I'm hoping for a 15-20 yard shot.
Good Luck to You and Be Safe
John