I currently play 714 AP2 irons with Project X 6.5 shafts. I am considering replacing 8-PW with 620 MBs to start with but would like to match swing weight. I can measure my current clubs when needed but I currently do not have the ability to check the swing weight of the MBs. Given standard length with New Decade grips (+.32”) and the current offering of Project X 6.5 steel shafts, what is the range of swing weight?