Swiss born and trained gunmaker Reto Beuhler (who lives in OK) has been doing a series of podcasts interviews with craftsmen in the gun trade. I was recently included along with other craftsmen. There are 6 interviews so far. Here is a link to the Reto's Spotify series.
I was a gunsmithing school classmate of SDH, I learned a lot from listening to his interview. Steven talks about many aspects of his career since gunsmithing school, lots of interesting information.