US869 for 300 RUM

Discussion in 'Reloading' started by Stavi300RUM, Nov 27, 2013.

  1. Stavi300RUM

    Stavi300RUM Well-Known Member

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    Hello everyone. Sorry if this is a repeat, but I have quite a bit of US869 powder to use up. I'm wanting to use it behind a 220 SMK for my 300 RUM. Any good loads to start with, AND how is as far as temp sensitive from 20 to 50 degrees?
    Thanks
     
  2. Dosh

    Dosh Well-Known Member

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    Stavi, 869 performed lights out in my 30/378, best groups I've seen. Went up north on a scouting trip with my friends and try some shots. At 50 degrees cooler I had a large difference in performance. I was a little worried about using it on my elk hunt last year and switched to H50BMG. I live in the desert and hunt in the high country, it is a 5500' and about 60 degree difference. Guess the stories about temp sensitivity got the best of me. Like you I have a lot of 869 left. May sell some of it on local Backpage. Just more comfortable with the Hodgdon Extreme powders. This is only my experience, you may have a different outcome. Good luck.
     

  3. nddodd

    nddodd Well-Known Member

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    I used 101.5 gr for a load I had used with 210 smk's. Speed was around 3150-3200 the best I can remember. It was very accurate in that rifle but others I've owned didn't like it to much. Can't remember the temp sensitivity but the best I remember it wasn't as good as the retumbo or h-1000 because it's a spherical powder vs the "extreme" extruded powder of h-1000 and retumbo.

    Hope this helped, and as always drop your charge 3 gr or so and work up.


    Nathan
     
  4. Stavi300RUM

    Stavi300RUM Well-Known Member

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    Awesome! Thank you for the insights and advice. Most likely will sell my extra powder and get some "extreme" powder instead.