Way to far. A rifle barrel shoots best with fouling in it. When finished shooting for the season clean it like you always did and put it away. After next shooting use a bore snake with a little oil on the end of it. Done.Been cleaning some rifles and trying to get all of the carbon traces removed. I have always thought that the barrels where clean when the last patch came out spotless, until the purchased a bore scope! Now I have become obsessed about getting every trace of carbon out of the groves, am I going to far?