From the "'Meteor' Round" article:
Tests of the unique ammunition have demonstrated that when a BMT round strikes soft tissue in a chest cavity, the resulting hydrostatic shock is so severe it destroys brain tissue mass, Bulmer said. As a result, a heart or lung shot against a large animal, such as a deer (and, presumably, a human), consistently causes the animal to drop the instant it’s struck. (After receiving a fatal shot to the chest from standard ammunition types, a deer’s reflexes often propel the animal a short distance after being struck.)
It appears Mr. Stan Bulmer, vice president for domestic sales (law enforcement & military) for Le Mas Ltd. -- the exclusive distributor for RBCD ammo -- is another bullet salesman who doesn't know what he's talking about, with regard to his absurd claims about the effects on brain tissue by hydrostatic shock produced in the torso by RBCD bullets.
I have not tested RBCD ammunition, nor am I aware of any reliable source who's tested it, and thus I have not made a determination about its suitability for personal defense use.
However, I do not regard highly any ammo manufacturer or distributor that tests personal defense ammunition in clay. Clay exaggerates wounding potential and does not accurately represent wounding effects of bullets shot into it. RBCD has a habit of using clay, instead of properly prepared ordnance gelatin, to demonstrate the wounding characteristics of its ammunition. Why do you think RBCD and LeMas use clay blocks to demonstrate 'wounding effects' of RBCD bullets?
One need only look at the photo of the clay block of the ".40 S&W truncated ball" in the first "defensive" photo and see for oneself the extent of exaggeration that clay exhibits. The hole produced in the clay block is 3-4 inches in diameter, which greatly exceeds the damage produced in human tissue.
The use of unusual terminology, "truncated ball," should set off BS alarms with regard to the professionalism of the people who are marketing this ammo.