Gday 338 weatherbyThe crap happens was only to say, some critters are tougher and just take it better than others. I've had deer take off 200 yards with their heart blown clean out the other side and about a 4" hole. Not the bullets fault or placement, unless you want to plant then with a shoulder hit.
More info is definitely needed.
My apologies as I'm not targeting any individual what I'm honing in on is the flaws in this design
Hope that makes sense
Cheers