Well there had to at least be a entry hole if the innards were turned to mush.
If you found no heavy bone broken then in all likelihood there was an exit hole as well.
The one knock on the partition is that instead of mushrooming well, it just sheds the jacket and led and the second section then just produces a caliber size or even smaller exit due to stretch and snap back.
If the critter doesn't die pretty much instantly the physiological reaction to a puncture type trauma is to tighten up around the would to reduce blood loss.
They just aren't made to excel shooting only through relatively soft tissue, they are made for deep penetration on thick, hard bodied animals and for punching big bones and still getting penetration.
Shoot enough animals though with enough different bullets you're going to see all kinds of things you've never seen before over decades of shooting, the hard part is figuring out what actually happened if you're surprised with the results and thence figuring how to correct in the future.