I just picked up the rifle yesterday brand new. Just cycling the bolt empty chamber it doesn't feel bad at all. But closing bolt on a round it's very hard. No matter what brand of ammo i.e-Eley, SK CCI, all the same. After 50 plus rounds no change. After talking to some folks I'm going on the assumption it's probably a head space issue. I've ordered a set of barrel shims for the CZ to see if this will fix the issue first. If all else fails I send it back to CZ.