The gun was regulated with 570 grain DGX. Shooting position is sitting down, gun in my hands, the lower part of my left forearm resting on a range bag for steadiness. I have also shot from sticks and standing up free hand. Shooting position has made no difference except my shooting is a little sloppier standing up free hand. Firm grip on the forearm. The factory target shows two bullet holes touching at 6 o'clock from the bull, presumably the factory showing off with perfect 50 yard regulation. At 50 yards, with full loads or factory I'm shooting minute of dinner plate. Left barrel shoots clover leaf group @ 4 o'clock 6" low. Right barrel shoots another impressive clover leaf 1" to left of bull. The factory target does say the group was shot with a scope. I'm using the iron sights. I will try a different powder or rather powders next. Is it unreasonable for me to expect a tight composite group at 100 yards? I'm comfortable shooting to that distance with iron sights.