Gee! 100 yards with Diopter Sight?! That's amazing! How old are your eyes?
40 yrs....and out of practice for the last 4 or 5 years lol. I'd be happier with that group if it was 200 yards, still got some room to improve. First time loading with H4831 as well, but I think the gun likes it. I shot some Privi out of a scoped 96 sporter today too and thought the scope was busted....5 inch groups with the 139gr soft point. Handloads printed around an inch, so I guess Privi is only good for the brass....terrible ammo lol.