Nials,
The piloted reamer system Silvers mentioned works very well. If you had trouble with it, you tried to take too big a cut. I take out about .002 every cut. I think that is 2 flats on the adjustment.
Silvers,
The piloted reamer from Brownells is easy to use and there is no doubt that you can do it, If I can do it, it's not hard. It does not have a chamber guide. The pilots on mine are brass rings that come in different sizes to match your bore, You can make them out of brass bushings if you like, and guide the reamer from 2 points. It is cheaper to have it done for one gun. I've probably opened up 8 or 10 guns with mine. I just lube mine with oil, It ain't rocket science.
Call me if you have questions, Dick
