jumping to conclusion
I fired just one of those from my Ruger Blackhawk 5 5/8 inch, into, and through a 2x4-4 in. end, and then into the dirt backstop.
44 magnum at 100 yards.
The red plastic filler; tip was driven deep into the bullet, but there was almost no expansion.
My conclusion; based on only that one round is that they are not any better than a far less expensive cast solid round, with the exception of a better trajectory.