Hi
I reload 55 gr billistic tip hornady. Super bullets. I have Sako 223 laminated stainless varmint. 200 yard 2ich groups, sometime it moves to about 3 or 4 inches., but I can assure you when I on the fox he's dead at 200 yards. I've pushed the hornady 55gr to 300 or 400 yards with hold over of 5 inches abovr foxes shoulder boooom he's down. So 1 ichabove I've never done I've alway zeroed at 50, 100, 150, and after 150 I've usually juge it on the night as, night vision is hard to juge your distance. I hope thi helps. Also I use Blc-2 24.5 grs and cci 400 primers spot on.