Only 2 choices as far as I'm concerned. The Brenneke or Brenneke-Rottwiel or for really BIG bears (or Water Buffalo, Rhino's or Elephants!!!) try some of those "Dixie Slugs", they weigh about 700+ grains and are hard cast and will penetrate more than any other slug I know of. The Dixie Slug "Tri-Ball" load has a lot of promise as a close deer load or a real stopper for bear. I think a slug for bear should be a full diameter slug, not a smaller diameter sabotted slug similar to a rifle bullet.....<><.... :grin: