Also, .41 cal Revolver in Cody, WY in 2009.
Emaciated sow w 3 cubs attacked a guy from behind, knocking him down and ran passed him.
He fired 3 times on second charge and killed the sow.
I was up there 3 days later and heard and read the story several times.
Thanks, found it!
Here is the .41 magnum defense story: