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RIP supplied this Sectional Density formula to me last March in a PM. [I think PM's over one year old are about to go south.] Here are the numbers: (grn weight/7000) / (bullet diameter X bullet diameter - INCLUDE the decimal points) = S.D. For 600NE: (900/7000) / (.620 x .620) = SD of .334 Jack OH GOD! {Seriously, we need the help.} | ||
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