OK I like the Briley tubes idea? How do I do it and go about it? Do I send them the gun or just the barrels? I see their website and prices. $695 to do a 20 gauge to 28 guage? Does that sound right? I presume I need to get it re-proofed over here afterwards.

If anyone could advise that would be wonderful. Many thanks for all of the comments. Clearly being safe after this is the most important thing.

Cheers
T