.300RUM & 240MK's/210 Bergers

Discussion in 'Reloading' started by Tiff, Feb 28, 2008.

  1. Tiff

    Tiff Active Member

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    Hi it's my first post here so please be gentle......

    My first .300RUM is ready for me to collect from my gunsmith next Tuesday:). The problem is that as some of you may know, here in the UK we have very tight gun laws and as a result there are probably less than 20 .300 RUM's in the country!

    This lack of local knowledge, combined with load manuals only listing to 200ish grains has caused me a problem with finding a safe starting load. Also powder is relatively hard to get within 100miles of me and is very expensive here in the UK.

    So at over $70 per lbs I've manged to get H-1000, Retumbo & 4831/4831SC. Can you please recommend any safe starting loads with these powders and the 240grMK's and 210gr Bergers.

    Any help greatly appreciated, Tiff.
     
  2. Stormrider

    Stormrider Well-Known Member

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    I run 96g Retumbo and the Berger 210. You can start at about 90 and work up if you care to. I still have room to go up but it shoots nicely and I'm happy with it. I can't help with the 240.
     

  3. mattj

    mattj Well-Known Member

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    Tiff -- if you email Walt Berger at BERGERLTD@aol.com, he can send you load data for the 210 Berger. I did so for the .300 RUM just the other day -- here are the loads he sent H1000 and Retumbo:

    210 Berger VLD, velocity data is 26" barrel at 3.60" COAL:

    Retumbo:
    Min: 85.5gr, 2844fps
    Max: 92.0gr, 3035fps

    H1000
    Min: 85.3gr, 2833fps
    Max: 91.6gr, 3038fps


    Normal disclaimers apply (work your way up, may be different in your gun, don't accidentally blow your gun/face up, etc).

    Good luck man!
     
  4. Tiff

    Tiff Active Member

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    Thanks for the info so far:) Anything on the 240 MK's would be a big help. Also can I use the H4831 with the 210's, since it might be a bit quick for the 240's?
     
  5. jmden

    jmden Well-Known Member

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    Welcome!

    The 240SMK is, I think, a bit heavy for the powders mentioned. Hodgdon US869 is probably a good choice for the 300RUM/240SMK. My load at the moment with the 300RUM/240SMK is 104.5g US869 at 3K from a 26" 10 twist barrel. OAL is such that the bullet ogive is touching the lands. I've got an OAL of 3.740 to get on the lands and a 4" magazine box lets me keep all of 'em that long. Good luck!
     
  6. jmden

    jmden Well-Known Member

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    Just a follow up to above. I'm using Rem brass. Another member here, JonA, uses Nosler brass (slightly lower volume and some think it's softer than Rem including myself after trying it--very pretty though) and has a load of 101g ( I think, correct me here Jon) US869 with an MV of about 2970 out of a Lilja 1-9 twist that's a bit over 26" or maybe 27".

    Other folks here have found that the 1-10 will stabilize the 240SMK out to about 1500 yds at 300RUM velocities. It's working for me beyond 1000 yds so far.
     
  7. Tiff

    Tiff Active Member

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    Thanks very much. I've prepared 200 Remington cases ready for when my custom 30" pacnor 1-10" based RUM arrives next week....I also tried some Nosler and have to agree it was very soft when trimming/turning.

    Unfortunately US869 is not available this side of the pond:(. So I've got to use H-1000 or Retumbo with the 240's....Any ideas on loads?
     
  8. Varmint Hunter

    Varmint Hunter Well-Known Member

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  9. Tiff

    Tiff Active Member

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    Thanks very much:). Anybody got any loads for the 240MK's and Retumbo? Also any loads with H-4831 and 210bergers would be great.