Thanks Will. I just got off the phone with a man at Ruger and he confirmed the the Old Vaquero, Old Blackhawk and New Blackhawk are the same size frames, cylinders, etc. The New Vaquero is a smaller frame and does not match the Blackhawks.
I make my patterns for all Vaquerso after the Old Model. Then wet form them for the new or old. The Blackhawks are the same as the OMV but will have the taller ramped sights up front that will need to be accounted for.
Do you only account for the front sight and not the rear sight?