I have lined several rifles myself soldering the liner in place. If the hole and the insert are closely fit the joint is very hard to see. On a rifle you have more material to work with and you can peen the liner before final dressing down and make it all but invisible. A shotgun and choke insert would not have enough material to peen but you could still end up with a very tidy joint with careful work. Mike Orlean has offered them in the past.

Steve

http://www.bertramandco.com/
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