6.147" is under moa at 600 yards, what is the goal group size of the challenge?
F-class is what this challenge is called, lots of people playing it every weekend.
10 shots, 185gr Juggernauts at 600yds, 6.147", think I can get it down to 5" If I concentrate, there is tricky wind shift between 500yds and 600yds at my range so hard (for me at least) to shrink the horizontal spread.
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