I don't do any of that.
I seldom clean a rimfire and five five shot groups tell me what I want to know.
If I was competing I'd think about it along with rim thickness sorting and all that other obsessive crap but it's a Gofer gun.
As long as I can get five shots touching I'm happy.
The folks that claim to know say that you need to clean or season bore between brands. The lube on 22lr is different one brand to another. They say it takes one round per inch of barrel between ammo brands. The lube left after shooting one brand changes how the next brand will shoot with the two different lubes mixed. Hasbeen
