The rib might tell you something about the influence that made Purdey's built a 25" gun. MOST 25" guns that were built were built according to Churchill's ideas, which included a raised, narrow, file cut rib.

PS: just about all Purdeys built in the last century were self openers built on the Beesley action design.

Can you post a picture?

Last edited by Chukarman; 05/05/18 11:57 PM.
C Man
Life is short
Quit your job.
Turn off the TV.
Go outside and play.