Dr Jim's review of the Smith Pigeon production was published in the 2011
Double Gun Journal Volume 22, Issue 2, Page 110. Unfortunately, the remaining shipping records did not include barrel type. The first run of 10 guns was in May 1893 with the new Crown steel. Nitro steel was introduced in 1898. Hunter Arms "Chainette" was an option, and there are reports of Pigeons with Whitworth barrels.