MbBullet ... I've had my buddy who works in a Tool & Die shop look at it and it definitely is a problem with the metal. It is NOT any buildup. Yes the choke is always screwed in tight, I'm always checking it throughout the hunt. As I mentioned, this choke only has at MOST 30 rounds through it.
What pisses me off most is the fact that Benelli (Stoeger Canada) won't return my calls and Benelli USA won't do a thing!!!
Yeah I could easily purchase a new choke BUT it's not the point.
***I just left a 3rd message for them as I typed this message***
Paul