INDICATORS ON DAN WESSON THREADED BARREL YOU SHOULD KNOW

I'm waiting for shipping of two "Aimpoint" mounts which had been called DWs. We will see when they get below.Exciting idea, I maye really need to attempt it in the future. Just comparing the two guns aspect by facet, it looks like the .357 barrel from a Model fifteen is bigger on the surface diameter.Does any individual have any info on probable da