Max,
Sorry, I certainly didn't mean to "get you in trouble," but must say that I am nevertheless pleased to get someone with your abilities seriously thinking about gun design topics. With all your talent, your long term training; your ingenuity, along with all your modern computer aided design programs, surely you can design something better than Frederick Beesley's 1880 self opening action, summarized above, after all, he was only a farmer's son! No offense intended; hope you have a good sense of humor?