With my four FX liners, removed and placed in a protective vise, I use a PatchWorm kit with the added felt scrubbing pad. I find this
system really can get into the grooves and scrub well, for a pull through.
Patchworm.com (non-secure). I also used a Dewey rod and cotton scrub pads to scrub and polish with JB bore paste. Once I got them super clean and polished using lead remover followed with the JB bore past, I finished them off with Trewax clear floor polish and let them dry...Then shoot to settle the wax. I also lube projectiles with the slightest film of 10 weight silicon shock fluid. This all seems to be working well for me. I have been shooting and testing a lot of slugs at different diameters and needed something that works well for this type of shooting and testing. I also us a brushless bore snake pull through between thorough cleanings, which is not very often now.