Hi Steve ....
First - if you're using a 12 gauge - ONLY use "copper solid" slugs. Lead slugs shatter on impact and the bear will eventually die - IF you find it. It can go for a mile with those little pieces of lead thoughout it's body.
Second - shot placement is excellent if you use this method ..
- imagine drawing a line down the middle of the bear from head to tail - right in the center - then draw another imaginary line vertically in half. Where these two lines meet - come ahead toward the head about 6" - THAT'S the perfect kill zone. The bear will bolt and drop within 20 yards. AND the copper solid slug will stay intact.
If there's anything else you'd like to know - OR - you can view the success of my personal methods ... please drop by my web site.
www.goldeneaglecamp.com
Good Luck Steve.