My Anschutz chrome moly and stainless barrels need 3 or 4 shots of conditioning a cleaned barrel. Same for Hart, Lilja and others just as good. This is with RWS R 50/100 and Eley Tenex ammo as well as Russian Olimp and a Temp when it was available. Other ammo often took more conditioning shots.
I think people will clean their rimfire 22's when they see accuracy degrade.