I'm surprised that the bullet didn't fragment more. My only experience with the TSX has been that the petals tend to break off when you hit bone. I have the remnants of one that I put through the head of a warthog at 50 yards (168gr .308 @ ~2600fps) it expanded fine but lost all of the petals. No bullets were recovered from my Kudu or Zebra but the exit holes indicated they didn't retain the expanded petals either.