I have some Brennekes but they are so old I don't trust them anymore. I have tested them, and they do not flatten as badly as the Foster type slugs. Haven't found them locally lately, but I can try mail order. Black Magic is the only one they seem to recommend for bear. Thanks.
http://www.brennekeusa.com/cms/blackmagic.html
Use to live in SE Alaska. Back then I carried a 4" M29 and a .444 Marlin rifle (wish I had kept that sweet rifle!). Maybe a Marlin 1895SBL is the easy answer?