When I was in high school I shot 4 position indoor small bore.....I used the club rifles which were all Anschutz. One day after a match I asked my coach how often they cleaned the barrels on the rifles......His response was "whenever they need it".......Needless to say in all the years I shot there the inside of the barrels were never cleaned and the rifles performed at a very high level....accurate enough that I shot good enough to place second in our regionals....The guy that beat me every time was the coaches son. He was competitive at the national level and received a scholarship to shoot on at college.

Since then I've rarely cleaned a 22 lr barrel...........just when they are new for the most part.