Well, I talked to Ron today, he didn't sound all that positive about it, for one he said he could do the bore but didn't have a reamer, for two he said he usually charges half the price of the reamer if he has to buy the tool, for three he said the 30-06 case is about 1mm longer then the 9.3x62 so either he has to take a bit more thread on the barrel to get it to fully run the reamer to it or make sort of a wildcat, and this wouldn't work with a barrel with open sights very well as that's harder to align, he also made a comment that if you wanted to try the wildcat isn route he wasn't gonna make any guarantees regarding accuracy.
Pretty much contradicting all the positive direction of this thread really, though he did say the 35 Whelen works quite well.