The Millet high rings for CZ 527 are really high, probably to work with 50mm objectives. Bolt clearance should be OK with most scopes.
The Weaver V-Series are very good scopes made in Japan by OLW (Optical Light Works), and the V-16 which is 4-16x42mm AO scope and is a very good varmint scope and has a smaller ocular bell that works well with CZ supplied rings or Burris high rings. It is my scope on my CZ 527 .204 Ruger and has accounted for many prairie dogs the past 2 years. The objective is recessed enough that a lens hood is not necessary. Slightly over $300 and worth every penny.
The Burris 4.5-14x32 Timberline has 1/8" adjustments at 100 yards and can't be beat for the money if you want a compact scope. The lens coatings are equal to Leupold VX-3 or Burris Signature Select, and you can get one for under $300 if you shop around. This scope sits on my CZ 452 .22LR and it has very wide usefulness as a mountain rifle scope or air rifle scope as well. The AO adjusts down to about 20 feet, so it is what is known as a "bug blaster" in the air rifle camps. A GREAT scope to switch between an air rifle, rimfire, mountain or varmint rifle. Long eye relief means never any brow bashing even under heavy recoil.
Any of the OLW produced brands are excellent if the eyebell is on the smaller side. These are Bushnell Elite, Sightron and Vortex branded, besides Weaver V and T series. OLW probably makes a higher volume of good scopes than anybody in the world.
SWFA offers a fixed 10X tactical scope that gets rave reviews. Probably the best deal in an economical tactical style scope.