Due to some having out of round extractor rims, Win AA hulls will lock a gun up so tight you have to put it into a rubber jawed vise to get it open. That has happened to me with my 28ga Repro and my Damascus DH12. Very aggravating. I can shoot any other shells I want in the D grade all day long with no issues.

Not to hijack this thread but I too have a stuck top lever.

Brian, the gun is the "Engineer of the Year" gun you assembled for my Daughter. Is there anything I should be careful of before doing the dowel hit? It has never been fired, only assembled and stored in the Parker safe.

Michael