I did mine with DJ's reamer and I have a suggestion. The throat is a little long on mine, I can't get a 180gr cast bullet to engrave the lands. If I had it to do again, I'd try putting a washer on the reamer to make it bottom out sooner for a shorter chamber area, then I would test my desired load to see how it fit. I wish mine was about a 1/16 shorter in the throat. I dunno if this would work, but you can always take it off and ream to full depth if it doesn't. From my chamber impression, it looks like you could shorten it by about that 1/16 before the brass started getting into the throat. Of course if you aren't planning to shoot cast and be anal about like I am getting accused of, this probably is a non-issue for you.
The funny thing is, Badnews Bob reamed his with it the day before I did and his is fine. His will push boolits back into the case where mine won't. :?
good luck,
Ian