Didn't read the 6 pages, BUT...
Brownell's lists the 6.5 Grendel and the 7.62X39 Stainless barreled action
in stock... though that may soon change.
Jerry
Never mind... I see it's old news.
"I kinda sorta want one in 7.62x39 to fling subsonic 255 Sub Xs"
Good luck with that 1:9.5" twist