I bought my 718 AP2's last fall. I have played 5 rounds of golf with them, and have practiced at the range about every 2 weeks. When I am on the course I religiously clean my clubs, as well as when I get home, so no dirt rusts them etc. my clubs have next to no damage except a couple of dints from slamming together in my bag, and my one wedge in which a large piece of gravel got caught in between the club and ball (see pic). But I noticed about 6 weeks ago lines at the range on my PW and 8 and 6 iron. The PW was the worst at that point but since then the 8 and 6 have gotten worse. My other clubs and wedges are fine, I don't know why these 3, in particular, are more so, as when I practice off the soft mats I do an equal amount of balls with each club. I have only been on grass tees twice this year and their turf is comprised of soil and fine sand, no heavy particulates at all. So I don't know if I have treated them wrong, or if the range balls are damaging my clubs, or if my clubs are wearing improperly or if there's something wrong with my clubs or??
My wedges see the most action in the sand and dirt so I thought they would wear or show damage or be susceptible to more things, so this is one reason I am scratching my head, that and others.
Attached are pics, 1st is my wedges to show how they have faired. second is all my irons and third is a close up of the lines I am talking about from the range. Any help or suggestions would be greatly appreciated, and Please excuse this if I am way off base.