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So, if one minute of angle is ROUGHLY one inch at 100 yards, a one inch group at 100 FEET would extrapolate to three inches at 100 Yards; pretty much three MOA.

Acceptance figures for service...

3.5 MOA was pretty much "acceptance spec" at the factory.

Be aware that some combinations of rifle and ammo will shoot proportionately WORSE at 25 yards than they do at 200.

It is all to do with the behaviour of the bullet as it leaves the muzzle.
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