A: I recall reading a long time ago that a .22 barrel, if not abused, is good for half a million rounds before its accuracy begins to fall off. As for cleaning, I know highly qualified rimfire shooters who never clean their barrels, and others who do it every time they shoot. I compromise by cleaning every 200 rounds or so.
Outdoor Skills – Hunting Q&A
Q: I just bought a very accurate .22 rimfire rifle, and I'd like to know what its expected barrel life is, and how often I should clean it.