https://www.titleist.com/teamtitleist/team-titleist/f/club-fitting/19163/new-irons---cb712-s Dynamic Gold Tour x100 @ +.5" will likely play .5fcm's or a 1/2 flex softer. (from my research) Hard stepping: 6i w/ a 7i shaft, in it will in theory, almost make up for the difference of the added length correct? DGX100 hs = 7.1 FCM vs std x100 en-USTelligent Community 10