Mike,

I agree that there is a jump in recoil from .375 to .416, and another jump from .416 to .470... After I shoot the larger bores, the .375 seems to be mild. Kreighof has a .416/500, that I assume is flanged and based on the .500NE. It seems that smaller bore doubles, with the exception of unique examples, bring a diminished price, upon resale.

Phil