Bill ,
I understand !!! I had a .318 WR (.330) made 10 15 years ago , I bought the guy a custom cutter (he kept it) . Turned into a pretty expensive project(then traded to a friend) Let me know what you find out . If it helps let him know I will take one as well (or let him rebore a bbl.)
Robert
PS just ordered a box of .333 Flange shells !!!!