How is this done?
I read on here somewhere that it was done, but if someone could give me the run-down on exactly "how", I think I'll take a shot at it. Not for any particular gun yet, but am just extremely interested, and may make some conversation pieces. Later on, maybe I'll build a 4-bore "around" it. But,---got to get started somewhere, huh?
Thank's.

p.s.--thought about putting this in the bore-gun forum, but I saw the reference to them in this one.