for the ipr to ipm formula
.001 inches per rev * 3169 rpm = 3.169 ipm
(now, to further complicate things, if chip load per TOOTH is important, then a 6 flute can be fed faster than a 4 flute, just like end mills)
The old fashioned method for reaming speeds, as I recall from high school, was 1/2 the drilling rpm, with the same feed (per rev). This rule of thumb should be ignored for high volume production work (make the reamer salesman do the math). But if you are doing a short run, where you can get away with babying your tooling, then I would suggest halving the sfpm (translates into halving the rpm that you would use for a same sized drill) and using the same inches per REV that you would for the same sized drill. This translates into 50% of the ipM you would use on the same sized drill (since the rpm is 50% of the same sized drill, and the ipr is the same).
well, I hope at least the ipm formula helps.