I have a CZ 527 Varmint Kevlar. I used the tall Burris 16mm dovetail rings with a new old stock US-made Redfield Golden 5 Star 4-12x with the tombstone reticle. The bolt handle just barely clears.
This rifle shoots like a house on fire. It loves 55 grain Blitzkings. I love Savage rifles, but this little mini-Mauser is in a class by itself.