Did you ever wonder if some of these over bored Lefever 12's were stock barrels that could have been intended to be used for a regular 10 or a light 10? Mine 12 is .750 bore while a 10 would have been .775. Did they take a set of tubes that could have been intended for a 10 bore and just finished bore it at a 12 bore, .750 and then strike the outside extra? Or were these tubes extra heavy for just such a .750 bored 12 waterfowl.

The reason I doubt that is that Lefever we have been lead to believe was always be short on cash and could not have kept that much slow moving stock on hand. How much demand was there for a special heavy larger than normal bore 12? If they only kept written records, which I have come to doubt ever existed, so many questions could be answered.