Well I hear it's basically a 22 Nosler and they boast 3600 plus with nosgar brass. I thought maybe with the shoulder change there might be room for a little more powder to hit that 37 mark.
We've got the 22 Nosler, the 22 nosgar, the 6.8 SPC variance, the dti's the x 45's
I'm not sure what other case there is to build on but I'm no expert. Imo we need some slow twist options in the 22 and 6 millimeter stuff. If I were shooting a distance where b c mattered I most likely would be doing it with a bolt platform where oal is not an issue. I don't understand the long-range fast twist AR stuff but I live in IL.