There is also the story of a swan being shot with a Setra. I have all the old Guns Reviews from the 1970s and might read them again one day to refine and clarify what the contemporary reports said. I would not be surprised if there was an element of domestic manufacturers trying to protect themselves. BSA in the 1960s was a massive concern employing thousands of people and no doubt an influential board member might have had a chat with a government minister over a glass of brandy in the Lords.