88MauSporter,

I have read and heard the same thing about Rigby's being built on standard length Mausers. If a .416 Rigby can be built and function safely on a standard length Mauser than I am wondering why a .404 Jeffery could not alos be built on a standard Mauser? I have also heard of .375's being built on pre-64 Winchester actions, but I believe that the pre-64 win. action is a little longer than a standard length Mauser action????