While I of course agree with everyone else on this site who would surely take an interest in this information, I'm afraid to have to admit that, in front of my eyes, it all would turn to meaningless dreck in an alarmingly short time. Which is NOT to say that it IS. Only that my adherence to charts and pressure curves and such can only go so far and in this matter, I long ago have decided to go on an inspired form of trust backed up by others' hard work and have enjoyed collecting and shooting Damascus barreled double shotguns and rifles for at least a decade now with nary an accident. So sure, let's have at it.