Thanks fellas I’m in the dark also it definitely doesn’t shoot like my other CZ’s!!!!

The crown: to the eye looks fine and if you stick a patch in the bore and bring it out it has the starburst on it.

The chamber: I have not cleaned the chamber or the barrel as most of the rimfires I shoot in matches shoot way better dirty than clean and every time I have cleaned one it went to crap for about 20 rounds.

As far as removing from the stock I have done that nothing seems whack and sanded the barrel channel out.

Next step is what drover said I’m going to try tightening the action screws and run the barrel lug less and maybe even try shooting it with the barrel lug nut removed. I have several CZ sporter 452’s and they all do their part that’s why I’m so upset with the varmint I really like the weight and the barrel diameter at the muzzle is small enough it passes for me to shoot in sporter class!