This is an interesting concept of revising the cartridge case to allow very high chamber pressure to acheive high velocity from a short barrel. This combination allows a can to be added and still have a reasonable total barrel length.

They are reporting velocities froma 20" barrel that are similar to what I get with a 24" barrel from my 7PRC.

The writeup indicates that there isn't undue stress on the rifle but it would seem that there would be increased barrel wear unless the powder burns cooler than traditional powders.

Interesting (to me) development.