I'd like to experiment with sleeving a rifle barrel both for looks, to add weight and rigidity as well. My thought was to use an epoxy filler between the original barrel and a piece of heat treated 4130 tube. Firing will not be rapid so I'm not worried about heat dissipation.
I also considered building up the barrel using something like Lab Metal but am wondering if it will last or start chipping and fall apart over time. I could put a 4130 tube over it I suppose.
Part of my challenge is that I don't have a lathe and wanted to tinker. I was going to chuck this up in my big drill press and then use a bastard file to downsize whatever filler and then either press fit or glue the sleeve to whatever.
What are your thoughts about how I can do this?