338-378 load info

Discussion in 'Reloading' started by roadhunter, Sep 25, 2011.

  1. roadhunter

    roadhunter Well-Known Member

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    I'm going to be helping a buddy start working up a load with 300 grain SMK's for his factory 338-378 Weatherby Accumark. I'm thinking maybe H1000 or Retumbo. Any help with a starting place for powder charge and COL would be great.

    Thanks,

    Doug
     
  2. RDM416

    RDM416 Well-Known Member

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    Jan 31, 2005
    With Retumbo you should be able to start at 96 grains and work up from there. I am running 103 to 104 in my 338 Khan (338/378 improved) with 300 grain Bergers. 95 or 96 grains should be a safe starting load. I expect you should be able to work up to 100 to 102, maybe more since you have the factory freebore that Wby does.
     

  3. roadhunter

    roadhunter Well-Known Member

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    Great Thanks.