Once you get a CZ 452, 453 or 455, you will find yourself hankering for a CZ 527 centerfire. I have two CZ 527s in .223 Rem and .204 Ruger, heavy varmint barrels. The kevlar stocked rifle is about the lightest .223 heavy barreled rifle you will find, beats the Sako Varmint by about a pound at 7.5#. Same as carrying a sporter weight .308 rifle. My .204 Ruger is the older 26" version, compound tapered barrel, still available out of CZ Europe last I checked. A prairie dog killer supreme.
There are some rifles available out of CZ Europe not imported by CZ USA. The CZ 550 in 7x64mm Brenneke is one of them. They have one limited production rifle in a beautiful Bavarian hogback stock, rosewood capped. People would think you have a Sako, it's so pretty.
My CZ 550 7x57mm has been mistaken for a Sako by a guy as the shooting range. (Looking from the left side, couldn't see the Mauser claw extractor). The beautiful figured stock was the reason, and high metal polish. Some CZ rifles are now coming with near custom wood. I visited 4 shops to pick out my CZ 452, and bought the one with the nicest stock. Paid $10 more, but worth it.
The CZ 527 M1 American weighs almost exactly the same as the CZ 45X rimfires. That makes a CZ 455 the perfect practice rifle during the off season. The CZ 527 does not have the sloppy floppy bolt that many Mauser rifles have, one of the improvements that CZ made to the Mauser 98 design, and is a true mini-Mauser which makes it far lighter than say a Ruger M77 that does not downsize the action like Sako and CZ does. An M1 American is in my future.
If you shoot the CZ 455 much, there most likely will be a CZ 527 in your future. You are going to get addicted to that crisp trigger and flawless mechanical function. CZ firearms smooth out and start shooting like custom firearms after you get a couple thousand rounds through them.
You must buy high rings to mount a scope on a CZ 45X rimfire. The Burris or Leupold high rings and a Timberline or Leupold rimfire scope is a combo that clears the bolt, and looks like it was made for the rifle. Forget the scopes with the big ocular bell. A Weaver rimfire scope should also fit. Made by OLW, same as Sightron or VorTex or Bushnell Elite.
The safety on a CZ rimfire and CZ 527 is backasswards, but at least they are the same as one another, back to fire. CZ 550 was changed to the standard forward to fire, so CZ needs to standardize the smaller rifles. My one legitimate gripe with those little CZ rifles.
I have actually killed more prairie dogs with my CZ 452 than my CZ 527 rifles combined. Longest shot was 262 lasered yards using standard velocity ammo. Standard velocity ammo is subsonic at the dog hole and they often just turn around to look at the impact sound rather than heading for cover. Not as big a fan of Stingers as I once was, the ballistic crack scares PD's as much as a centerfire round. Stingers are best for close range snake hunting, blows them in half. Your CZ 455 is a PD Terminator if you put in the practice.