I think if you ask enough people you can find examples of almost any bullet failing.
Probably the most fair statement out there...
FWIW as a taxidermist, and folks running common ammo, the MOST core/jacket seperations I saw and this mostly on whitetails, was corelokt.
Of course I can't recall one failing on a deer for me. But moving forward to the boy scout theory many years ago, I mostly went to good bullets for hunts where I didn't want to have to pass up a shot.
I consider amax the same, I don't see one ever giving up on the skin/hide of a lung shot, but I'd treat em like bergers et al, lets go in soft and out hard if hard is involved at all...
