7mm WSM Powder Recomendation

Discussion in 'Reloading' started by tm7554, Oct 6, 2012.

  1. tm7554

    tm7554 Member

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    Dec 3, 2011
    Gents,

    Just started with a new model 70. I want to shoot Horandy 162 SSTs. Can you guys give me a powder recommendation? I've experimented a little with RL-17 and I really don't have enough time behind the gun to form a great opinion. I've worked up to 60 grains and i'm seeing the string average around 3100. Accuracy seems fine for the first 3 shots. The groups did open up after that but i suspect the sporter barrel on this extreme weather is the reason. After doing some research it seems a lot of folks think that RL17 isn't the best powder for this cartridge. I'm looking for a few recommendations.
     
  2. Trickymissfit

    Trickymissfit Well-Known Member

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    Jun 11, 2010
    try MagPro
    gary
     

  3. reeldawg

    reeldawg Well-Known Member

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    Mar 12, 2011
    Mine liked H4831SC
     
  4. Red Beard

    Red Beard Member

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    Jan 19, 2011
    With 168gr pills mine liked IMR7828ssc.
     
  5. IanB

    IanB New Member

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    Apr 20, 2007
    Rl 22
     
  6. JeffVN

    JeffVN Well-Known Member

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    For the Heavies (180 Berger) I have run everything from RL-25, Retumbo, H1000, and H4831. For the lighter pills, I have seen folks use H4831SC, RL-22, RL-19.

    JeffVN
     
  7. webs

    webs Well-Known Member

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    Nov 23, 2009
    I have a build finishing up in a week or so and will start out with H1000 and Retumbo with 168 grain Bergers.
     
  8. redgun

    redgun Well-Known Member

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    Jan 11, 2012
    My rifle likes H1000 w/ 180 gr Bergers. 3050 fps with sigle digit SD.
     
  9. alaska

    alaska Well-Known Member

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    Feb 1, 2010
    RL 17 and 19 with Win 760 are good powders for the 300 WSM but my 7mm WSM my powder is Win 780 or H4831sc with 160 to 175 gr