Hello. I'm going to be rebarreling a revolver in an odd caliber and there isn't a forcing cone plug gauge for it. Is there a standard list of dimensions for forcing cone sizes? I understand each varying angle (5,8,11,etc) would require a separate set of dimensions, but where are these? A plug gauge will have the "shelf" which shows you max and min. Where would I find a standard for what this should be, depending on caliber and angle?