My Driver SS is in the 80’s, 7-iron goes 140.
Been playing Steelfiber i95 and Accra 90i stiff iron shafts but played my last round with MMT 70R’s as an experiment.
Distance & dispersion with the 70R’s were awful, aside from 2-3 good shots.
I felt that they lacked “oomph”.
How light is too light?
I’m going back to the 90-95 gram stiff shafts. I guess they fit me better. Static weight matters, I learned.