I purchased a Benelli M2 for my wife two years ago, she uses it for trap once a month to shoot 3 rounds (75 shells). The gun worked flawlessly for the first year but then it started acting up. She feeds it one round at a time due to the Gun Club rules. When the shell is placed into the action and the bolt release button is pressed to close the bolt, once in a while the bolt will not close all the way, the bolt will not rotate final 1/4 inch in order to fully close it. After I take it apart and clean/oil it it will work for approximately 50 shells and then it will act up again. I called Benelli and they suggested cleaning the recoil spring which involves heating up the nut to remove the spring or they suggested sending it to their service department. Have any of you experienced the same problem and what is the solution, the gun has only about 1000 shells through it and I know it can't be a dirty recoil spring. I tried different ammo but I think the problem is with the bolt carrier. Any ideas would be helpful.
