Ithaca 10 Gauge Double
I have an interesting Ithaca 10 Ga double, Lewis model with 30 inch fluid steel barrels. Barrels have not been cut as they are choked full and full. Overall NRA good. The oddity is that one barrel has a removable fully rifled insert that extends the full length of the barrel and is threaded on the muzzle end. The breech end has an extractor that is actuated by the shotgun extractor. The insert is chambered for the 45/70 rifle cartridge, and due to matching patina appears to be about the same age as the shotgun. This is a new one on me, anybody out there seen one of these?