168 gn SMK 300WM Powder

Discussion in 'Reloading' started by .222, Apr 5, 2007.

  1. .222

    .222 Well-Known Member

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    Apr 1, 2007
    I am looking for proven powder for launching 168gn SMK at approx 3200-3300fps from a .300 WM. I am chasing a load for a friends Sendero. Mine loves H1000, his is a bit more finicky. I am hoping the masterminds around here may provide some insight. I am not necessarily looking for a pet load, just powder recommendations, however I wont turn down any data if someone is willing to share. His is a Sendero II fluted. We have found very accurate combinations at velocities below 3,000fps and have tinkered with a variety of seating depths but have not been able to do better that .9 MOA. Any help will be greatly appreciated.
    ~z
     
  2. mr.big

    mr.big Well-Known Member

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    Apr 4, 2007
    IMR-7828
     

  3. auton

    auton Well-Known Member

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    Jun 4, 2005
    seems with the lighter bullets, 165/168 the Reloader 19 and IMR 4350 works good in the 300 win mag. The 180/200 seem to prefer Reloader 22 or IMR 4831/H4831.
     
  4. CatShooter

    CatShooter Well-Known Member

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    I am using H-4350 with 190SMKs and there is still some airspace - it would be a very good pick fore the 168's.

    Max for H-4350 would be around 74gr at 3300 fps.

    77gr of H-4831 would also get you 3300 fps.

    The "H" powders burn very clean and have good temperature stability.
     
  5. Delta Hunter

    Delta Hunter Well-Known Member

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    Feb 18, 2002
    I'd certainly give RL22 a try. Works great for me with 165 gr. Ballistic Tips.