Ted: In the FWIW column, I saw one of these toggle action Darnes (Bruchet?) guns on an episode of Midsomer Murders on Netflix last night. It made two appearances, first in the ambush murder of the Lord of the Estate's wife during a driven shoot, and then later as the instrument used by the guilty parties to execute a murder/suicide pact. It struck me as telling that this British program didn't use an "English" gun to perform these foul deeds. The gun was very clearly shown, with the action being operated to load it, just so there was no confusion with anything produced in Merry Old England.
See a Darne used as a murder weapon in "Coup de torchon" a terrific French movie.
