[quote=ellenbr]I do wonder if a Game Warden would issue a citation if one were to engage either on a Dove Shoot?

International migratory regulations between the US and Canada specify only 3 rounds in a shotgun excepting some states for spring snow geese.

If you were to only load 3 of the barrels at any one time you would be within the law. The 4th barrel would be purposeless.

Nothing is foolproof to a sufficiently talented fool.