Here is the picture and background posted by Peter Larson for those who are interested.
One is perfect the other a complete failure. Same bullet, same rifle, same load, same buffalo. Exactly the reason I cannot stake my life on these bullets.
https://www.africahunting.com/threads/bullet-performance-database.37971/page-4
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Had the same experience with 270gr TSXin 375HH when I shot my buff.
First bullet quartering frontal shot at six meter.
Worked perfect and blew the heart to pieces and broke the leg on the exit side.
Second shot quartering away hit in the rump did fail and was recovered under the skin in the front
of the buff.
I shot plainsgame with 250gr TTSX and had no exits.
Shot nyala,red hartebeest and waterbuck.