All those nasty wounds appear to have been fatal...
Seems to me B.C is overrated for general hunting, more of an issue for LR hunting, LR target shooting.
Terminal performance, OTOH, is very important.
Also, matching velocity with bullet design for optimal outcome.
But, dead is dead, sometimes not pretty. I'd rather lose some meat than lose an animal. Three quarters in the freezer beats no quarters.
DF
