Model70Guy,
I've seen quite a few animals killed with both Barnes X's, from the original to TTSX's, as well as Berger bullets. In my experience, hunters who THINK Barnes X's destroy a lot of tissue are amazed when they see the amount of internal-organ destruction caused by a Berger.
Things like being able to look at a wound and see the sky on the other side? Or smacking a deer so hard that it looks like its snowing out?