Another approach - in case it's of interest:

An experience motor mechanic showed me another way to finish holes.

His method of making bushes was to turn it in a chuck, OD +.001 , ID
spot on.
When pressed into placed (in this case a conrod small end) the ID would
get smaller, and this was dealt with by honing with a small brake
cylinder hone in a hand drill.

Whilst that doesn't sound like a precise method, I found it to be better
than hand-reaming, which always left a 6-sided hole. I used to have to
ream on the tight side, and let it bed in.

Embedded abrasive doesn't seem to be an issue.

Jordan