Kemp, I have never done it with my .22 LR rifles, but you can if you want to. It really depends what kind of shooting you will be doing. Video here for .22LR barrel break in and whether or not you need to do it >>> youtube.com/watch?v=eywvg5aDlu8

Kemp, yes I've done it pretty much since I started shooting. For 22lrs unless you're competition shooting doubt it'll make much of a difference but I still do it. I mostly just worry about doing it in my bigger calibers. For that you run a bore snake threw after every round for 10 rounds. After 10 rounds I do it every 5 rounds until I hit 50 rounds. The theory is it will help smooth out any rough spots in the barrel for better accuracy. Does it make a difference I'm not really sure but I do it for peace of mind. Hope this helps.

Kemp, I have been a fan for years of Christensen Arms break in process (have many of their maintenance books) : https://christensenarms.com/barrel-break-in/ ---------- In rimfire use standard velocity lead rounds initially instead of jacketed bullets unless 22WMR or 17HMR. Cheers and stay safe!