Rookie question: I've always known that a lot of the better clubs are forged, but it dawned on me the other day that I'm not sure what the alternative is... are they cast? No way they're milled, right (obviously I'm aware of the putters, just curious as to irons and how they're made)? I only ask because I'm thinking of playing the soon-to-be-released AP3's instead of my CB's when the time comes, and I'm wondering how they create a "hollow-blade" head.