BOSS Settings for .300 Weatherby?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Buano, Jan 10, 2011.

  1. Buano

    Buano Well-Known Member

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    Nov 28, 2009
    Hi,

    I've got a Win Model 70 classic stainless in .300 Weatherby mag. with the BOSS that we've never shot. Time to to see how it shoots. I'm looking for the suggested BOSS settings for various Weatherby factory loads with 130 to 200 grain bullets. Anyone know where to find that data? With what they cost I hate to waste more Weatherby shells than are necessary to get this gun shooting.

    Thanks!


    __________________
    Looking for quality 20-60x80mm spotting scope, 15x56 binoculars & quality rifle scopes (Swarovski, Nightforce, Zeiss, etc.).
    Looking for accurate stainless rifles in: .243 Win, .338 magnum (Edge?), & .340 magnums, and a .410 shotgun.

    For sale: Tikka T3 in .270WSM with a Bushnell Elite 3200 3-9x50, Rem 700 XCR in .270WSM with a Nikon Monarch 2.5-10x44. Mounted scopes on both but neither has hunted yet & both look NEW. Also, a Win 70 SS with BOSS in .300 Weatherby mag..

    Let's deal!
     
  2. chav0_12

    chav0_12 Member

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  3. Buano

    Buano Well-Known Member

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    805
    Joined:
    Nov 28, 2009
    Yes, the Winchester Model 70 Classic was offered in more chamberings than the Browning counterparts. Finding the recommended settings would likely save me a few boxes of ammunition, and with the price of Weatherby ammunition I figure it's worth doing the research. Both Browning & Winchester have posted suggested BOSS settings on their websites but neither lists the .300 Weatherby chambering.
     
    Last edited: Jan 11, 2011
  4. Buano

    Buano Well-Known Member

    Messages:
    805
    Joined:
    Nov 28, 2009
    Found them:

    Weatherby .300 Wby. Factory Cartridges
    Start
    Wt. Bullet Type Suggested B/C BOSS
    Grns. Usage Setting

    130 Barnes TTSX M 0.35
    150 SP M 0.338 3.0
    150 Partition M 0.387 3.0
    165 SP M 0.387 3.7
    165 Barnes TSX MB 0.38 3.7
    165 BST M 0.475 3.7
    180 Spitzer MB 0.331 7.4
    180 SP MB 0.425 7.4
    180 Barnes TSX MB 0.453 7.4
    180 BST MB 0.507 7.4
    180 Accubond MB 0.507 7.4
    180 Partition MB 0.474 7.4
    190 8.9
    200 Partition MB 0.481
    220 Rn-Ex B 0.3