This is what we experienced with Jordan's red deer a couple of years ago. Would you agree these bullets failed? Since these bullets have performed in this manner on numerous occasions, wouldn't it be logical to surmise that it is a possibility the OP encountered similar performance? It's unlikely he is posting to deceive us.
This is the XTP James used a couple of years ago at the Bash.
Versus this performance:
Across the board I have never seen more consistent performance irrespective of the game. Why use anything else?