James, you are off and running to a better than good start. Nice work. We lost a regular contributor several years ago who probably didn't live far from you in the UK. Ballistix999. He was a self-taught gun restorer/smith who did beautiful work. I looked for some of his threads, but unfortunately the photos and videos were taken down after his death as well as his website. Tony's battle with cancer was featured on BBC (one of the channels). Tony had some great videos on case hardening actions (on his car port) browning barrels and blackening hardware. Perhaps someone here can steer you to a site that may have some of his work. He also did an e-book, a compilation of his projects. He is missed.