MRP for 300 rum??

Discussion in 'Reloading' started by älg, Dec 16, 2005.

  1. älg

    älg Well-Known Member

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    does anyone have loads for a 300 rum using norma mrp?

    how would it work for 200-220-240 bullets with a 10 twist / 26 " barrel?
    thanks in advance.
     
  2. royinidaho

    royinidaho Writers Guild

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    Should be pretty much the same or very close to RL-22.
     

  3. hoghound

    hoghound Well-Known Member

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    ALG, Here is a powder burn rate chart:
    http://home.hiwaay.net/~stargate/powder/powder.htm

    Here are some loads that shoot ragged holes at 300yds in my stock 300Rum Sendaro:

    220gr Sierra - 91.2grs. of Retumbo @ 3000fps
    210 Berger VLD - 91.5grs. of H-1000 @ 3020fps.
    210 Berger VLD - 94grs. of Retumbo @ 3100fps.
    (My favorite) Berger 185 VLD - 97grs. of H-1000 @ 3400fps.

    All lite with Fed. 215

    Tim
     
  4. BountyHunter

    BountyHunter Writers Guild

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    IF you have access to some MRP, suggest you look at the MRP2 which is equivalent to RL25. MRP2 works great in the 338 AI versions I know.

    Black Hills is now the only distributor of Norma powders in the US and no direct sales to individuals, so your dealer will have to order.

    MRP/MRP2 are extremely reliable lot to lot especially compared to the RL22/25 and not as temp sensitive.

    BH
     
  5. biff's reloading

    biff's reloading Well-Known Member

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    Bringing an old thread back to life but I wonder if anyone else has any more info. I have a can of mrp that I have no info for. If I can't find retumbo, I'd like to have a use for it. Thanks
     
  6. Varberger757

    Varberger757 Well-Known Member

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    Found some data both in LRH, I hope it will help you. Originally by a member called bh5k in 2011. I left only data for Normas powder related to the 210gr VLD

    Bullet Powder Start Load Approximate Start Velocity Max Load Approximate Max Velocity Fill Ratio

    210 Grain NORMA MRP 2 80.0 2663 88.2 2961 95.6%

    210 Grain NORMA MRP 75.0 2647 83.3 2894 86.8%

    Here something relevant from Sweden:

    Laddata also in English! :)

    gun)
     
  7. TJAY

    TJAY Well-Known Member

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