It just might be. My only Williams is on a FWB 124D, more of a true sporter style and not the best trigger. The other Anschutz sights or on HW guns, underlevers, so a fixed barrel and the one FWB sight is a factory diopter on a FWB 300s target rifle, so basically as far as the used, at least in my case would be comparing apples to oranges. Saying that I am not as good now at my age, just shy of 78 as I was 40+ years ago but that little FWB124 could shoot some tiny groups at 10-20 yards, and on a good day with me shooting is as good as any of the others. I do not have the best most absolute steady shooting table, one of the Caldwell stable table's, which contrary to it's name is not the most stable thing going. I generally get a gun zeroed on paper, and then do most of my shooting, from an offhand, ie, standing up position, shooting at small tin cans at 15-20 yards, more fun with a reactive target than trying for the tinest groups.