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Thread: 243 Winchester and 2400

  1. #1
    Boolit Master

    kungfustyle's Avatar
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    243 Winchester and 2400

    there isn't any data on this one but Lyman lists 2400 at 15.5g for a 130g boolit as a starting load for a 308. Being that the 243 is a necked down 308... Does anyone have any experience with 2400 and the 243? I just got a 85g Lyman mold and looking at giving this a go.

  2. #2
    Boolit Master Maven's Avatar
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    I have the Ly. 87gr. Loverin mold and use 9.0, 9.5, and 10.0gr. of Unique with it. (Accuracy is VG - E.) Since Unique is faster than #2400, you may want to start at 9.5gr. - 10.0gr., examine both your targets and cases, then slowly work up a load.
    Last edited by Maven; 05-02-2017 at 07:18 PM. Reason: auto correct error

  3. #3
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    JonB_in_Glencoe's Avatar
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    a quick search found this thread...I suspect posts #4 and #5 may help you out.
    http://castboolits.gunloads.com/show...shed-load-data


    also btroj had a great comment about his experience with 2400 and rifle.
    http://castboolits.gunloads.com/show...=1#post2318228

  4. #4
    Boolit Master

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    thanks for the help.

  5. #5
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    Plenty of Data in Lyman #1. Start with 11 grains and end below 14 gr with either the Ly 85 gr or the RCBS 95.
    [The Montana Gianni] Front sight and squeeze

  6. #6
    Boolit Master
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    RCBS #1 on pg 51 shows 13.0-15.0 gr with the 243-095-SP and 14.5-16.5 gr with the 243-100-FN.

  7. #7
    Boolit Man
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    Don't know if this is any help I have the NOE 246-105 gr mould shooting it in my 6mmBR with 12.5 grs 2400 it's not max so should be safe in a .243

  8. #8
    Boolit Master

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    Thanks also found an old copy of Lyman 48 and 44 manuals and they suggest 12 to 15g with the Lyman mold. So the adventure begins. Will post the results after the trip to the range.

  9. #9
    Boolit Master
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    This is what My 1980 Thumb Safety Ruger 77V does with the NOE 246-105 and 16 grains 2400 FPS approx. 2000
    Click image for larger version. 

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
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