Of the nine .22LR firearms that I own (4 handguns and 5 rifles) only one has had a brush down it’s bore. The only reason I had to do that one was because of a squib load that stuck a bullet half way down the bore, and like an idiot I did a follow up shot. Needless to say, the bore was a mess with lead fouling. Normally all I do is run a patch wet with Hoppe’s down the bore using weed whacker string to push it. Some of these .22’s have over 10k rounds, and are just as accurate as the day I bought them.
By the way, the pistol with the stuck bullet, after cleaning the lead out of the bore, it shoots just like it did when new, which is more accurate then the nut squeezing the trigger.
By the way, the pistol with the stuck bullet, after cleaning the lead out of the bore, it shoots just like it did when new, which is more accurate then the nut squeezing the trigger.