Just got it and took it to the range. After bore sighting I got it zeroed quickly, the only problem was, as I went to check the shots, my 3 group set was cloverleafed. I walked the 100 yards to the target to confirm-a tight cloverleaf.

Wow. I think I got lucky---I know they shoot well but this one seems to be exceptional.

Kudos on the good shooting!
I don't think I've ever read a bad word about CZ 527's.
I have one in 223, and the accuracy is just like yours. And I did have one in 222 Rem that shot well too.
Sold it when I started policing up old Rem 722's, in 222.