Thought you might enjoy this Jack Lott article on the Care and Feeding of Double Rifles from Gun Digest.
https://i.imgur.com/RuyBw6e.jpg
https://i.imgur.com/oNfIpAV.jpg
https://i.imgur.com/vQK8rHj.jpg
https://i.imgur.com/r9wg3r3.jpg
https://i.imgur.com/B9ubm8L.jpg
https://i.imgur.com/aAGJzWh.jpg
https://i.imgur.com/7WI1pAu.jpg
https://i.imgur.com/FDZX2Vq.jpg
https://i.imgur.com/THVQWOK.jpg
https://i.imgur.com/z9FTfrV.jpg
https://i.imgur.com/m6WNyDm.jpg
https://i.imgur.com/z50gavl.jpg
https://i.imgur.com/EtLphLg.jpg

Thanks; I have the original. It is good.

Good read thanks