I've noticed I can shoot smaller groups, and shoot smaller groups faster with the single stack Glocks (42 w/ extension, 43 w/ extension, 43x, and 48) than my double stack 19 and 17. Would smaller hands have something to do with it? Or do I have a weird subconscious recoil anticipation quirk? A few others guys in my club and my father have experienced the same as I have. Anyone else perform better with the single stacks?