The dowel/sandpaper will work OK until you get the barrel channel opened up to the point that you can slide a sheet of paper between the barrel and stock and it goes up to the chamber area. Don't open it up too much, just enough to clear a sheet of paper.
Bedding the recoil lug is an entirely different subject. If you are going to bed the lug, do it after you are done with the barrel.
Never try to educate someone who resists knowledge at all costs.
But what do I know?