Bearing surface length?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by txsendero, Dec 23, 2009.

  1. txsendero

    txsendero Well-Known Member

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    What would be the results of having a short bearing surface on one bullet versus another? In this case, 7mm Rem Mag with Berger 140 gr VLD (bearing surface of only .122") versus Nosler 140 gr Accubond (don't know what the bearing surface is, but HAS to be a bit more than the Berger). Unless there is a typo on the Berger Tech Data list, that seems to be a really short bearing surface.

    Just for reference, the bearing surface of a 168 VLD is .462".
     
  2. LouBoyd

    LouBoyd Well-Known Member

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    Last edited: Dec 23, 2009

  3. txsendero

    txsendero Well-Known Member

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    Thanks Lou. The Berger website does show the 140 VLD in 7mm, its listed under the "Hunting" VLD bullets. The chart I looked at looked to be a scanned copy of their Tech Data List on this forum under Barrels Bullets and Ballistics, and it is also on Berger's website as Quick Reference Chart.
    It has got to be a "typo", but I sent a PM to Eric Stecker to see what he says about it, just haven't heard back from him yet.
     
    Last edited: Dec 23, 2009
  4. bigngreen

    bigngreen Well-Known Member

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    I shoot the 140 Berger and Accubond in a 270 WSM with the same load, same distance from lands, and the Berger runs 50FPS less than the Accubond, I contribute this to the bearing surface causing more drag thus more pressure with the longer Accubond.