The cartridge being discussed by the OP is a true 22X6.8 chambering that was built by a sponsor here. It does not share the same chambering or barrel design of any other cartridge on the market. Operationally it's performance envelope is different than any other cartidge available at this time.
Commonalities of the 22X6.8, as built by Ritch, and any other 6.8 variant stop and start with the parent case. It's wide spread use has proven the efficacy of the round in the field. I look forward to seeing how this particular rifle performs.
Greg