On the topic of O/U’s firing the top barrel first, I just tested my Edwinson Green ST and discovered that it also fires the top barrel first. I have owned it for years and hadn’t noticed the firing order. It was made as #2 of a pair, presumably for driven shooting. The chokes are mod/mod, so barrel selection is not an issue. Apparently more than one early O/U maker backed up Robertson on firing order preference. I wonder if the early Woodwards also fired this way…

Owen