My son packed home a Navy Arms rolling block in 45-70 today with a "ginormous" barrel . It is full octagon, 28" long and just under 1.5 inch diameter . The only markings on the barrel are 45 70 R. Hoch . Dropped it on a scale and it weighs in at 19lbs 6oz. I assume it was built as a bench gun but does anyone have info on this barrel maker / gunsmith?