9.3mm sizing die

Last fall I purchased NOE’s 9.3mm 280 gr. GC 4 cavity mold. I have looked far and wide for a suitable sizing die for this bullet but can not find one . It would presumably be .366 diameter. I considered the possibility of drilling out a .358 sizing die but was not sure if such a bit existed or how I would be able to keep it centered. I have both Lyman and Saeco sizers. Does anyone know of a ready made sizing die in this size or would it be possible for NOE to make one?