I enjoy my new Wolf. After shooting I would take it home, take it apart, and clean it. Including taking the barrel off and cleaning all around it. At the next shooting session I would have to re zero because my zero had changed. It has to do with the screw tension on the forearm. Its not a problem but in the event any of you are having the same problem I brought this up. I now count how many turns of the screw to remove the forearm. To remove I turn it until I feel the screw fall of of the threads. I match the turns when putting it back on. I keep the slot in the screw lined up with the barrel as a reference point. Problem solved. I think this would apply to any break open inline.