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Jimro, M118 match ammo specs are mean radius averaging 3.5 inches at 600 yards. Extreme spreads of that will be in the 11 inch range. None of the ball powder charged M118 ammo shot in the 7 inch extreme spread range like the better lots of extruded powder lots. And the National Match lots in the 1960's shot extremes in the 6 inch range; mean radiuses of 1.7X inches. I've broken down several lots of M118 to check the powder used and all the not-too-good lots all had ball powder.
One doesn't have to be a crack shot to tell the difference between 1.8 MOA ammo and 1.2 MOA ammo. That's the typical difference in M118 ammo with the ball and extruded powders.
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