6mm - 85gr Sierra vs 87gr Hornady?

Discussion in 'Reloading' started by SamSpade, Sep 2, 2005.

  1. SamSpade

    SamSpade Well-Known Member

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    Sep 21, 2004
    Since we have some 6mm "experts" here I have a question or two on the Sierra 85gr HPBT vs the Hornady 87gr HPBT. I have been shooting 6mm wildcats for years, 243AI, 6mm/250AI and now a 6mm/284. But this came to my attention just recently.

    Why is the the BC so different on these two similar bullets, Sierra .282 and Hornady .376? I can see that the Hornady is a little longer, is that the reason?

    Because of the better BC the ballistic calculators give the Hornady quite an advantage.

    Shooting both bullets with a muzzle velocity of 3450 fps.

    At 500 yds
    Energy: Sierra 642, Hornady 923.
    Velocity: Sierra 1849, Hornady 2185.

    Obviously that makes the Hornady appear to shoot a lot flatter.

    Accuracy with the Sierra "seems" to be better.

    Anybody got any thoughts on this?