Don't have a 22 cal blank, but I do have a .308 Kreiger , 10 twist in heavy varmint I'd trade... I have a 6 comp match that I need to retire and would like to try a 6 Creed on for size.
Just throwing it out there in case a 308 stick is in the cards for ya.... P.S. The blank is just shy of 30" @ 29-3/4'ish