Browning X Bolt Max long range vs Weatherby MK V Bartlein bbl 257 BEE

Discussion in '6mm, 6.5mm, and .25 Cal (Not 6BR)' started by Ironworker, Oct 25, 2019.

  1. Ironworker

    Ironworker Silver $$ Contributor

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    Now I’m worried . Perhaps it’s too much neck tension . Shot my Browning XBolt max long range today . Received ADG brass. But because I don’t have the neck size bushing yet for my fl bushing sizing die.i decided to load up the brass just the way they came. So burning Re#26 Sierra manual load recommendations. 150 gr Sierra MK bullet barrel has a 7” twist. At 100 yards my groups averaged 5” 5 shot groups ! Have I bought a “ Pig in the poke “ ? Along side on same bench set up I was getting typical accuracy out of my WBY MK V 257 Bee 3/4moa. Been shooting all my life ! What could be the problem ?
     
  2. Shinbone

    Shinbone

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    5" group? I'd check the scope and its mounts, first
     
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  3. lancexxx

    lancexxx Buchanan Accuracy Gold $$ Contributor

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    Something more than a load
     
  4. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    What is a 257 bee?
     
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  5. Ironworker

    Ironworker Silver $$ Contributor

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    257 Weatherby Magnum
     
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  6. Rdlningcltchdmpr

    Rdlningcltchdmpr Gold $$ Contributor

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    What caliber ?
     
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  7. Ironworker

    Ironworker Silver $$ Contributor

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    6.5 PRC. 150gr sierra I've since learned needs to be just .010-.020 off lands . I was seating at magazine length ,which was to far off the lands.
     
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