did you cut the flutes above or below center? i cut these .010 below
sounds good, I do .005"
As I ran through earlier ITT, I just mill the flutes soft, using a normal end mill in a cheap import 5C spin index. Then I file the clearance angle in to the trailing edge of the flutes, harden, then stone by hand.
Wildass guess, I'd bet you don't have enough clearance angle on them. Mark them all along the tops of the flutes with dykem or sharpie marker and see if they're rubbing where they shouldn't be. Once you've got them cutting, ink them again and see if one flute is doing all the cutting. If so, lightly stone that flute and try again. By the time the chamber's roughed in you'll have the thing tuned up real nice. (to languish in the drawer for the rest of its life, hah)
To the rest of the rabble, I'd rather spend a few hours making the reamer than the weeks it takes to get one shipped. My projects are usually strange junk anyways, like a TT33 in a 9x25 dillon based wildcat (couple mm deeper chamber because it fit in the mags). There's also the pride of "built not bought" and all that, too.
ETA: here's some from a x54R reamer I did
rough turned, no throat on this one
Look ma, left handed flutes. D'oh!
Don't seem to have any after hardening, but I assure you, it was ugly and black, then with nice shiny cutting edges after stoning.