RE: Cryo??
Maybe I'm off, but cryo frozen may have to do with a heated barrel/steel that is then rapidly cooled ie frozen....
not sure about a room temp barrel, that is just cooled to very low temps....
inform us if you know more about the process, but I think this has to do more with treating the steel....you can machine the steel while its soft....then heat it up, then rapidly cool it to give the steel different properties etc....