Originally Posted by BC38

No reason to be afraid of doing this. It is truly a no-brainer type of job. If you can turn a screwdriver and squirt a few drops of oil on something you can do this one. It really couldn't be much easier. The hardest part is removing the cylinder from the gun and that is as simple as removing the yoke retention screw.

Literally all you need is the right reamer, a can of cutting oil, and a good screwdriver to remove/reinstall the yoke retention screw. Maybe a rag and some carb or brake cleaner to clean up the cylinder after you're done.

The reaming only removes tiny little shavings of metal from inside the chambers. I did all 9 chambers on a High Standard W101 and the shavings from all 9 chambers combined wouldn't have been enough metal to make a small paper clip. Literally just a few grains worth of metal.