Terminal ballistics for large bears

[arthury]

In a defensive situation against very large bears in the northern woods (like interior and coastal grizzlies), some tend to think that a different type of terminal ballistics is required.

Having conversed with people in Alaska, it appears that bullets which can penetrate deeper through sinewy bears with thick bones; especially, their skulls would give the human a higher chance of survival than expending ones during a close range encounter. The ones that are recommended again and again are the hard cast ones. The intent is to provide deep penetration and break bones if the bullet meets with the bones.

I guess we have to take into consideration that these components in a large bear is vastly different from a human:

1. thickness of skin vs the thin skin humans
2. thicker and stronger muscles
3. stronger and harder bones
4. thicker trunk
5. skull that has a much thicker frontal area and it is angled to provide a deflective plate

Has anyone studied and provided any data for this? I think it is very useful for fisherman, hunters, hikers and photographers working in the woods.