Super strong setup,but must have been a bear to fit.
That statement likely explains why not many makers adopted it. Next question is "Super Strong" in what direction??
Most people seem to forget, ignore or just plain don't know, that the major points where strength is needed on a break open gun is not in a rotational direction but axial. It has been proven time & again that one sturdy bolt is adequate to hold a break open shotgun closed while firing. In fact both W W Greener & Dan Lefever made claims to having fired their respective guns with all bolts removed & held them shut by the simple act of wrapping their thumb across the tops of the barrels.
"IF" you give a smoke test to a whole lot of multi bolted doubles you will find "One" bolt to be doing all the work with the others providing ornamentation & "Bragging Points".
