I'd rather build a 9.3 on a 338 case. I guess you could set back the barrel and jam a reamer in it.
One of my buddies up here just built one on a 300 Win Mag.
http://www.canadiangunnutz.com/forum/showthread.php?t=461361Load development is continuing, but 286 gr Hornadys are already going way over 2700 fps.
Ted