I suppose it depends how many you put through it, I was putting over a thousand (CCI mini mag) a month through mine before VHD, and the crud and copper fouling that came out with bore shine was grim, its done me nearly thirty years and gets a brute force clean every month (when in use), but each to their own, what works for me doesn't mean I am right!Never cleaned a 22lr yet, and not planning to either. Yes the wax can build up around the feeding parts and may need a swipe with an earbud every few decades
Rimfire bullets are lubed and leave a coating in the barrel. So no corrosion I don’t clean it out as that then leaves bare steel potential for corrosion.Just out of curiosity, why such a massive difference in cleaning regime between rimfire and centrefire? Is there any scientific or practical reasoning behind the discrepancy?
Would they be .22 shorts?Just like my boxer shorts, I clean annually whether it needs it or not!