I think your bullet did just fine. I shot a blackbuck ram at 60 yds with a .257 WBY, 110 grain accubond, and incredibly I had no exit wound. The bullet was under the skin, far side and expanded every possible micron and the internals looked like a hand grenade had been used. The animal dropped in its tracks.
I'd expect an exit wound, but for some reason it didn't happen. However, you couldn't have had any more internal damage. Strange performance, but not a bullet failure.
I like/expect an exit woumd, but sometimes things don't happen as expected.
