Powder for a 338 RUM

Discussion in 'Reloading' started by motrapper, Apr 18, 2014.

  1. motrapper

    motrapper Well-Known Member

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    What would you recommended for a 338 RUM shooting 300 grain AB's

    Thanks for all advise

    Sid
     
  2. Bear Camp

    Bear Camp Well-Known Member

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    I have been very happy with H1000 in my 338 RUM shooting 300gr SMKs. I'm getting a validated 2,734 fps with a max load out of a 26" barrel.
     
  3. Doublezranch

    Doublezranch Well-Known Member

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    2 powders come to mind. 7828 ssc is a very good powder in the 338 rum. It's a very stable, slow burning powder that delivers consistency shell after shell. Meters extremely well too. I use 88 grains behind a 265 LRX bullet and have had amazing results. I would also not hesitate to work up a RL 33 load. This is the cream of the crop as far as over bore mags go. Of course that is my opinion. As mentioned, H1000 is also a great powder.
     
  4. motrapper

    motrapper Well-Known Member

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    What is the main difference between. 7828 and 7828ssc As I see both and both are available right now
    Thank you
     
  5. Doublezranch

    Doublezranch Well-Known Member

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    The ssc stands for "super short cut". IMR cut the sticks to make them meter better making for a more consistent charge. Burn rates are the same. I switched to the ssc because I found it compressed better on compressed loads. Also, the metering is so much better.
     
  6. motrapper

    motrapper Well-Known Member

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    I just went to there reloading site and they did not list 7828 for 300 grain bullets
    any ideas on where i could find some
    Thank You
     
  7. Doublezranch

    Doublezranch Well-Known Member

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    I'm looking for ya. Hold tight....
     
  8. motrapper

    motrapper Well-Known Member

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    Thank you sir
     
  9. Doublezranch

    Doublezranch Well-Known Member

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    I had Barnesuser28 look with me and we couldn't find any data that was clear and precise. It would be a educated guess at best. So instead of guessing and someone getting hurt, it's just safe to say we couldn't find any. Sorry...
     
  10. motrapper

    motrapper Well-Known Member

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    Well thank you for looking
    Sid
     
  11. Doublezranch

    Doublezranch Well-Known Member

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    Your very welcome.

    Jayson
     
  12. Dano1

    Dano1 Well-Known Member

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    338_RUM_300gr_version7-0.jpg

    Don't know if you can read this due to size of print, but here is some data from Nosler regarding data for a 300g Accubond and IMR7828.

    Here is the link back to the web page of all their data for the .338 RUM.

    338 Remington Ultra Magnum (RUM)

    Hope it helps,

    Dano
     
  13. motrapper

    motrapper Well-Known Member

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    Thank you that helps
     
  14. jlrookstool

    jlrookstool Member

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    I get almost identical velocities with H1000 or Retumbo. 31" barrel , 300 grain AB, Nosler custom brass, CCI mag primer, 89 grains of either and 2810 fps. I feel Retumbo might group slightly better but they are very close.