Well, Wildeagle, greetings from the Great Frozen North. I used to work in Waynesboro. If you're ever in that area, look up Greg Kiersz and say Hi- he's a very ineteresting fellow.
I too have a radius groove rifled barrel (Colerain .40 A weight). I confess that (largely due to my own inaction) the rifle is still a work in progress, but i think that since you went and got me all MOTIVATED i'll wander into the basement and work on it some more.
I've coned all my ML barrels- wish i'd done it long ago. There are those who claim it adversely effects accuracy, but my experience seems to show no appreciable difference. Perhaps i'm just not a good enough shot to notice the difference.
Anyway, good luck with your project.
MSW