NWBLKTAIL
WKR
Well the deed is done. Rented reamer arrived today and I went at it. No idea if I did it right, but I did have several pieces of fired brass that were clickers before and now they extract smoothly. I guess that's a good sign. I just hope I didn't take too much off. I did more turning than I expected. I was also very careful not to push on the back of the reamer though, so may be that's why. I never saw any metal filings up at the front end of the reamer near the shoulder, so I guess that's good. The metal that was removed was very fine grit. I just turned until it didn't seem like it was cutting anymore and no more metal grit appeared.
Then I wrapped 0000 steel wool around a .44 cal pistol brush, applied a few drops of oil, screwed it to an old section of cleaning rod, chucked it in my drill and gave it probably 30 seconds of medium speed and some push pull motion. Upon inspection with the borescope I had some nice crosshatch scratches applied. Cleaned and put it all back together and everything seems good. Won't get a chance to shoot it until next week. Yes, I'm more than a bit nervous. Fingers crossed.
Going to give this a whirl when the reamer arrives thanks for posting up procedure and results