What is the difference between the 6.5mm 140 SMK and 142 SMK?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by dwm, Feb 25, 2009.

  1. dwm

    dwm Well-Known Member

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    2 grains, right? :D

    No, really, is one a tangent ogive and the other a secant ogive or something like that?

    Do they shoot that much different from each other?

    How fragile are they, about the same as a 140 AMAX?
     
  2. tillroot1

    tillroot1 Well-Known Member

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    the bc listed for the 140 is .535
    the bc listed for the 142 is .595


    the 142 is a much better choice for 1000 yard shooting, I do not know, maybe from 100 to 500 or 600 yards they may perform very closely. They have good strong jackets.
    Ron Tilley
     

  3. dwm

    dwm Well-Known Member

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    When you say good strong jackets, you mean they are much stronger than the 140 AMAX?

    Would punch a hole in thin skinned game for example?

    As opposed to expanding and doing significant damage.

    I understand they are match bullets, just curious ...
     
  4. tillroot1

    tillroot1 Well-Known Member

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    Doug, I do not have answers for your questions, I only have used them for target application. I would suspect pretty fast expansion and defragmentation, but that is speculation on my part. I would expect the same from the Amax as well but no first hand experience to back it up. Good luck, Ron Tilley