As I understand it the barrel and action should be tight to the stock of the rifle. I have a semi-automatic .308 which you can push down on the action below the rear of the scope and it moves slightly. This rifle has accuracy problems. I suspect the movement is the cause of it. I've taken it apart to identify the problem and can see no adjustment mechanism to fix it. The trigger assembly is held in place by the screw at rear of trigger. The barrel and rest of action is secured to the stock by screw in forearm potion of stock (front sling assembly). The front part of barrel is secured to front portion of trigger assembly. This just acts as a hinge allowing the rear portion of action and barrel to move up and down. What could possibly be the problem? Rear bolt/screw adjustment?