I can't say enough about JB's Bore Paste for removing tough fouling. I would also suggest that next time you are shooting that you swab the barrel with an alcohol dampened patch in between shots. For lubing the Lee REAL bullets I heat up some beeswax & olive oil lube then pour it in a pan with 20 or so REALs up to the last lube ring. When cool I just press a copper tube over each bullet and remove. You may have to adjust the mixture to get it just right but it works great for me.