This Sectional Density thing

Discussion in 'The Basics, Starting Out' started by Greg Duerr, Jun 9, 2014.

  1. Greg Duerr

    Greg Duerr Well-Known Member

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    Could someone explain to me the concept of Sectional Density...............I see that the 6.5 have a lot higher SD than most 308 bullets

    Whats the advantage to shooting bullets with a high SD I would think that the weight of the bullet would matter more.................................

    A 6.5 140 has a really high SD higher than some bullets that are a lot heavier I would think that the bullet mass and weight would make up for its lack of SD
     
  2. FearNoWind

    FearNoWind Well-Known Member

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  3. BlackStreak

    BlackStreak Active Member

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    The sectional density of the bullet is a part or the formula used to calculate the bullets B.C. / ballistc coefficients. Something like the ratio of the bullets sectional density to its form factor