Canuck65, if you read the whole thread you'll see that some rifles won't accept fired brass back in. CZ-match has trouble 'coming out' sometimes, and likes going back less. Average chambers run those OK, but part of the issue is also testing feed, like from a mag. Empties don't do that well.
It's not a matter of exacting standards, it's a matter of design. Some 22s are designed to be dryfire safe, but unless you KNOW your gun is designed that way its best to assume it is not.
Then again I've seen reports of damage on guns that claim its safe so I tend to be cautious with all rimfire just in case.
I don't 'leave any fouling' when I store guns - upright or sideways. And I DON'T 'over-oil/lube' to have any residual oils 'run down' the barrel.
Wondering what are the recommended snapcaps for a 22LR?
I've seen the Azoom snapcaps at Cabela's, which seem good for center fires (with the rubber core). However I'm curious how well the rimfire ones would work, since wouldn't they get dented with each dryfire?
A-Zoom's (#12208) 22LR 'training rounds' (upc 666692122088) never were snapcaps. The old boxes did use some confusing labeling, that is true, but the current box says only "training rounds" and "action proving dummy rounds", along with the warning "NOT DRY FIRE SNAP CAPS See Warning on Back".
Tipton makes some 22LR snap caps.
<https://www.tiptonclean.com/snapcaps/snap-caps---rifle-.22-rimfire/831787_M.html>