Stumbled on this while perusing youtube on a similar ammo topic.
The concept seems like a win. A 9mm 74gr round, moving at 1440+ FPS, from a 4 inch barrel. The only draw back, I saw, was the penetration on non-target material, ie: walls, windows, steel.
Here are a series of penetration test. The last one is a PR vid from the developers.
The bullet does not separate or mushroom. It acts like a propeller, using spinning centrifugal force.
In a couple of the tests, you can see the bullet imparting spin on the ballistic jell wound cavity..
https://www.youtube.com/watch?v=MdYO...Sg5IqnZXcUfuau