Thread: Playing with some Redding Competition Shell Holders

Originally Posted by Micky Duck

actually that is possibly easily explained....you are using expander button in reverse of how it is designed to be used....
its meant to be inside case when neck is squeezed tighter and it opens it out as it slides OUT of case....by pushing it down into case,the forces at play will be different....

Greetings Micky,
I use them that way all the time. Often the last step after neck sizing in a Lee Loader. I had struck the problem once before when sizing .303 cases to .30-40 Krag. There was a thicker part of the neck where the shoulder had been. From what I have read sizing this way produces straighter necks but have no proof of that. The rabbit hole continues and long may this be so.
Regards Grandpamac.