I killed lots of critters with the 140 XFB and never recovered one, but had plenty of instant tip-overs.
First time out with 120 TSX and TTSX and I wasn't so impressed. TTs seemed to work alright and expand well; not so with the T. (140s and 120s were all shot from the same rifle: 7mm-08.)
More to the point of this thread,
the first TTSX I ever fired was the 168 in 30-06 at over 200 yards. The chunk of spruce was the catch 'vehicle', assuming I hit the water-filled spaghetti bottle - which I did. Obviously, the 4-5" thickness of water affected the balance of the bullet as can be seen in the imprint it left on the wood.
Sometimes, the air you 'let in'matters less than the air you 'let out'.