golfinFF
Active member
I'm not going to get into an argument over it you believe in the "science" of it and I'll believe in the easy out of strengthing the lofts and throwing a new color on it to sell more clubs.
Keep Calm and Golf On.
You believe what you will.
But the launch conditions- spin launch angle are/should be the same on properly fit(shaft) irons regardless of SGI/GI or players irons. There is zero differentiation when looking at monitor numbers on what head or loft the club is and what it should produce.
A six iron should have certain back spin numbers, a certain launch angle, certain decent angles and peak height to be called a 6i. If said iron doesn't fall within those parameters then its not a 6i.
What the club company does to get those numbers within the parameters is based purely on science(CG, loft, weight distribution)