We forget the first job of any gun maker was to sell new guns, not improve older ones. Also there were so many failed “perfections” along the way. Countless locking systems, chokes, barrel lengths, features and special secret advantages for sportsman. Most were quickly left behind but a select few endured. The Jones under lever is a classic example of a obsolete System which long was used because it worked well, not that it was the best or only option.