I have a BAR II in 30-06 with a Simmons 4X9 scope. At 50 yards I can shoot groups less than 1/2 inch all day. I've had 5 & 10 shot groups that I could easily cover with a quarter. However, at 100 yards those groups spread out to 2-3 inches depending on the ammo used. I've tried 3 shot groups, 5 shot groups, cleaning between each, cleaning between each shot, etc. However, regardless of factory ammo used, I can't seem to tighten up my 100 yard groups. Any advice or thoughts? Thanks!