I see the bullet-performance angst is still running at spring run-off levels!
I stopped using TBBCs when they changes the jacket formulation (accuracy issues) but never had a complaint about terminal performance -- even compared to the TSX.
(I've actually recovered more TSX / animal shot on average than TBBC / animal shot)
The one I do have is in the center of the middle group. It's a 130 gr .270 that went
lengthwise through a buck antelope at 200 yds, breaking the right shoulder
and left hip before coming to rest under the left leg hide.
FWIW, the 300gr .375 on the right "only" penetrated 6-8" of moose spine.....