Van - 3 1/2" with a renegade at 100 yds. That ain't bad. But just to show you that I wasn't blowing smoke (no pun intended), here is a target my open sighted Renegade 45 GM barrel shot. The top group is with 180 Gr Nosler .40s and 200 gr .40XTPs using 70 gr of Pyro P. Group size C-C is 1.3".
The group in the bull is also at 100 yds but with 80 gr of Pyro P and 200 gr .40 XTP. This groups is also 1.3" C-c if you throw out the 'flier' at 6 oclock in the bull.