Like I said in my original post, to the best of my knowledge, this is the first time the term "ICR Rifling" has been used outside of official LW internal communications.
I don't know if I'm the first person outside of LW to test this, but they told me that the bolt action rifles that have been tested exhibited increased velocities and that accuracy would improve the charge weight would increase.
I was told that this is the first gas gun barrel to be produced and tested with this rifling.
Tony.