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But long-time industry guy Terry Koehler had a robot – Iron Byron – when he was coincidentally developing a new Apex iron for the Ben Hogan company in the mid-90s. He set Iron Byron to hit some cavity back irons, then set the same strike conditions to hit a muscleback blade. His p...
I suspect that adding a few strategically-placed strips of lead tape to the backs of these iron heads would make the irons play to a “standard stiff flex” for mid weight graphite iron shafts, but I definitely would not do that for the duration of the testing period, because not many p...