.30-40? Any markings on the barrel, either on top or under the wood? Pope invariably marked his stuff. In the event that any markings were removed, the rifling would be the clincher: Pope invariably utilized LH twist, and in the case of lead bullet target barrels was of a distinctive shallow groove design but high velocity .30 barrels got rifling more typical of "modern" forms. He made very very few barrels for jacketed bullet shooting.
