ballistic coefficient

  1. The Spirit

    Disigning.308 winchester high bc low drag bullets

    Hello people, How are you? I'm Chilean and I live here, and I have plans to go US for a long time in the future. Well, here we have.308win or may be 6.5creedmor, nothing more in rifle ammo. I prefer .308, because barrels long last more, much more. Change barrel in chile it's a pain in the...
    • The Spirit
    • Thread
    • 308 bullets ballistic coefficient flat line long range low drag
    • Replies: 8
    • Forum: Reloading Depot
  2. The_Next_Generation

    Form Factor vs BC vs Drag Coefficient

    I need some help understanding why the formula to calculate the BC of a projectile is what it is. In Bryan Litz’s AB for LR Shooting (3rd Ed), he writes: BC = (projectile weight) / (cal^2 * i) Where “i” is the form factor of the projectile’s drag coefficient as it compares to the standard G1...
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