My 3.325" 20-shot groups was shot at 800 yards, 5:30 to 6:00 am in virtual dead calm winds. Rifle was supported on soft bags at fore end and stock toe; nowadays a typical F-class position. Reticule in the 20X scope bounced around on the target well inside a 1" diameter circle; pretty good holding for an older man at the time. I'd fired 1 or 2 shots to center the group on the 3-foot square 1/4" thick foam board, let the barrel cool down to ambient temperature, then shot 20 rounds about 20 to 30 seconds apart. Just testing ammo, not in a match.
