300win mag + 185gr berger vld

Discussion in 'General Discussion' started by MN Hunter, May 9, 2010.

  1. MN Hunter

    MN Hunter Well-Known Member

    Messages:
    557
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    Feb 4, 2009
    I have been shooting 180gr barnes ttsx bullets. Saturday I picked up a box of Berger 185gr VLD hunting bullets. I ran a bullet into the lands and am at 3.619 overall length. Looking for input on where to start with seating depth. The gun does have a wyatts box. Do they like to be into the lands - or how far off is a good place to start?

    I will be using CCI 250 mag primers, Remington brass and H-1000 powder.

    Thanks for your input.
     
  2. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

    Messages:
    4,380
    Joined:
    Jan 31, 2008
    Im running the same load almost.

    you need to run a seating depth test it takes 24 rounds you shoot four 6 round groups.

    Do a ladder test take you best load because this has your barrel harmonics close. Use that load for the seating depth test.

    .010 off the lands
    .030 off the lands
    .050 off the lands
    .120 off the lands

    I got lucky I nailed it at .050 off the lands just like that.

    300 win mag (no turn neck)
    CCI BR2
    81.0g of H-1000
    Nosler brass
    185g VLD
    3030 FPS 14 ES 10 SD

    Jon
     

  3. MN Hunter

    MN Hunter Well-Known Member

    Messages:
    557
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    Feb 4, 2009
    Thanks for the input. Hopefully I will be able to get out this weekend and do some shooting.