Yeah, leave it me... It is a bit of a stretch. I thought perhaps a small piece of wood made it past the follower and rode up into the action with a shell. Maybe it could happen with me taking a lot of shots on pretty high angle birds. Damn if I know. All I do know is that there was a small piece of wood embedded in the back side of the hammer on the side next to the disconnector. It was jammed in pretty good. Getting that out did not fix the problem. It was locking up every 15 - 20 shots. Now it is happening every 5 - 7. I'm done. Mossberg will be getting a call.