If I understand the process in how MPF is calculated, I believe the measurement is captured by reviewing the measurements from a single iron in a set, be it either the 5 or 6 iron. Therefore my question is whether or not if the MPF varies from Iron to Iron in the same set. I only ask because I know most MFG’s have moved to a progressive weighting system in their iron sets. The new Cobra F6 irons would be an example where the mass and dimensions in the 9 iron are vastly different from that of a 5 or 6 iron. With that said I’m curious if one size doesn’t fit all in this instance, and a set of irons could in deed have a range of MPF’s. Perhaps a lower number in the higher irons and maybe a higher playability in the shorter ones.. Is that possible?