7rum

Discussion in 'Reloading' started by Morack, Feb 12, 2014.

  1. Morack

    Morack Well-Known Member

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    Feb 10, 2012
    Im shooting a 168vld with 93grains retumbo col is 3.886. I see Berger only goes with max of 89.3. No pressure signs running about 3350fps anyone else?
     
  2. kiwi3006

    kiwi3006 Well-Known Member

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    The speed seems OK.
    I'm running 180 berger hybrids with 99gr US869 for 3250fps. I've got a 20 thou jump to the lands, but my RUM is short throated.
     

  3. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    I've gone up to 93 grains retumbo with the 171 barnes and it was fine in my 7rum, but I've backed down to 89 grains as the accuracy is better there. I'll be working with rl50 in the near future with it as I think retumbo is a bit fast for full throttle loads with heavy bullets in the 7rum.
     
  4. Morack

    Morack Well-Known Member

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    Feb 10, 2012
    Retumbo with sierra 168 hpbt they go to 94grs. Mine seems to be more accurate at the top end.
     
  5. roughneck065

    roughneck065 Active Member

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    Feb 8, 2014
    I got one of these ive never even fired.... how you guys like them? I don't even start with the thing its a factory 700.
     
  6. Diggo

    Diggo Active Member

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    Jan 24, 2014
    I am just beginning to build my 7rum but I am having a very hard time finding brass. I was thinking about trying 50bmg or rl25 with 180's.
     
  7. wby mag

    wby mag Member

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    Nov 11, 2013
    Grafs has some nosler 7 rum brass in stock
     
  8. Morack

    Morack Well-Known Member

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    Feb 10, 2012
    What twist rate do you have? I have a 28" Krieger barrel in 1/10 and would love to try 180's but think my twist rate may be slow. Mine is long throated, with 168's I could not get close to lands.
     
  9. kiwi3006

    kiwi3006 Well-Known Member

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    I have a 1 in 9" twist. You might get them to work with a 1in 10 with the velocity.