My 16g 1911 OOE LC Smith with 30" brls is 6# 10 oz and 1906 2E with 28" brls is 6# 8oz. Why carry a 20 when you can have a 16?
BTW: William Larkin Moore has a very nicely re-stocked Iver Johnson 16g, 30", F/more F that weighs 7 1/2#. Same weight as my 1915 12g Sterly with 30" brls. Why carry a 16 when you can have a 12?