Barnes 112 MatchBurner G7 needed.

Its not an exact science by any means but g1 * .5 = g7 is a way Ive read over the years to short hand and make a decent ball park guess. Some bullets it works out to a higher or lower ratio but they all seem to hover around a ~.49-.51 ratio

So in example .624*.5=.312 which actually works out to not far off from what canezach said he uses in his experience.
 
From yesterday:
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@750 yards:
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@1250 yards:
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