Welcome, no worries about being trashed. It’s not like that here.
CZ bores are tight and many people use a 20 or 17 caliber brush, snake, etc.. for that reason. It’s not your imagination. Try a smaller size and also think about getting a bore guide for the rifle, it helps.
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Its fine, but for me... if its a bolt action rifle it gets cleaned with a one piece coated rod/Dewey rod, using a bore guide. If you go the rod route, make sure you get a .20 caliber for the .22lr CZ's as they are very tight. I have bore snakes, and if its just a quick clean with plans to shoot again soon, then I use them also. But for a good clean, use the proper rod and bore guide set up.

 

Thank you friends!

 

I have used a .22 cal Hoppes bore snake in my CZ rifles before, but after a couple of times of playing tug-a-war with the thing I stopped doing so. Quick clean gets a Patch Worm and I have a .17 cal rod for those times a deeper cleaning is called for (rarely).

 

Welcome Aboard Camper11. I quit using "snakes" on rimfires after I broke one trying to clean a CZ455. I now use .17 and .20 (?) coated Dewey cleaning rods on my .17 (air and rimfire) and .22 rifles. I do still use the .30 and .22 snakes on my CZ 527s (.223 and 7.62x39) for a quick clean. The dirty snake is a concern for me....but I still use them. When it's time for a more thorough job though, I carefully use the coated Dewey rods with a jag and properly sized patches. I rarely use a brush. Not the expert here, for sure...but just what I found works for me. Bob

 

There are 20 and 17 caliber Bore Snakes.
None should be used as a substitute for cleaning with a good quality rod and bore guide.

The 22 is now for 243 which pulls most of the burnt powder out and lay down a thin coat of oil.

Similarly the 243 used for 257, 270 for 7mm and 30 cal and so on.

Since there is always some abrasive action on the bore at the muzzle when the caliber appropriate snake is used they aren't worth it.