Does any one have a formula for browning damascus barrels? Will shortly be getting a early Lancaster Slide and Tile breech loading shotgun that will need some attention. I hope to do a sympathetic restoration of the gun when it arrives. From what I can put together so far is that it was built as a 14 G centre fire (not a base fire) around 1860 - 1864. Any help would be appreciated and will attempt to post pictures when the gun arrives. Steve.