Does a cleaner gun mean a cleaner shot?
With 15 years’ experience as a Benchrest competitor and champion, Dan Killough knows how to extract maximum accuracy from a rimfire barrel.
eley.co.uk
I found this and thought it was an interesting read on rimfire barrels.
"Every barrel loses accuracy once it becomes dirty, although the point at which it loses accuracy is different for each barrel. In almost all rimfire competitions, somewhere between 25 – 100 shots are required before a competitor can easily clean their rifle. I also have not personally seen a rifle that could not shoot at least 100 rounds before losing accuracy due to fouling. So, we settled on 90-100 rounds in between cleanings. "