[marktwain]

Could this be the case you are thinking of?

It is not a pistol failure, but it has both 10mm and .45 in it. And there is mention of finding .45 under the skin and in the fat of the bear.

Here is a compilation of bear attacks where a 10mm was used, if you are interested.

[wardaddy]

Here’s one I chanced upon looking at scary bear attacks on YouTube

https://youtu.be/DIyCfEpPep8