I wouldn't use TSX on dangerous game at all. I had used them exclusively on everything since 2005 until a lion hunt in Zim in 2018. Little to no expansion on the 300 gr TSX in my 3-7-5 H&H, kinda looked more like solids.
The recovered 3-7-5 bullets (eland & buff) looked so bad my PH wanted me to use my .300 Win 180 gr TSX on the lion instead of my 3-7-5 as we knew those (recovered) 180 gr TSX expanded. He didn't trust the 3-7-5 TSX to open up on a lion.
He made a comment that perhaps Barnes had changed up the alloy as they were great when they first came out, but the more recent ones (around the time) disappointed.
Gone to A Frames for DG in my 3-7-5 H&H and .500 NE. That said, I also had Cutting Edge solids with me and used them on a giraffe but did not use them on buff.
FWIW A Frames and the CEBs shot into the same hole at 100y.
Last edited by Tony_Soprano; 01/09/23.