any 1 have G7 BC data for 6mm hornady?

Discussion in 'Long Range Hunting & Shooting' started by Ring, Dec 13, 2009.

  1. Ring

    Ring Well-Known Member

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    105 amax and 87 vmax...
     
  2. winmagman

    winmagman Well-Known Member

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    From Brian Litzs' book .252 for the 105 and .196 for the 87

    Chris
     

  3. Ring

    Ring Well-Known Member

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    found this on JBMs page JBM - Calculations - Drag Function Conversion

    105gr

    Drag Function Conversion
    Input Data
    Ballistic Coefficient: 0.492 G1 Caliber: 0.243 in
    Bullet Weight: 105.0 gr
    Velocity: 3000.0 New Drag Function: G7
    Output Data
    Speed of Sound: 1116.4 ft/s Mach Number: 2.687
    CD of Standard G1 Bullet: 0.527 CD of Standard G7 Bullet: 0.259
    Form Factor of G1 Bullet: 0.516 Form Factor of G7 Bullet: 1.049
    New Ballistic Coefficient: 0.242 G7 Sectional Density: 0.254 lb/inĀ²