of Tite Group, over my home cast, Lyman #2, Lee RNFP slugs, sized to. I do note that my ancient Armi San Paolo, Bresica, 1858 SS revolver will start loosening the trigger guard screw, at 6.2 grs. So their warnings apply to 'black boxes'. Dverzilli, something to take into account is that the Converter cylinder maker didn't make the revolver in which it is to be used.