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Thread: 243 Load Help

  1. #1

    Question 243 Load Help

    Hi All

    I posted a few weeks ago for ideas for loads for my 20inch Ruger with Speer 100gn BTSP and N160 powder and can't find any info re the max load for this combination as I have been working up a few loads and want some advice before going any further.

    Can anyone help please ?

    Thanks Lads

    Alan

  2. #2
    Alan

    Try this: http://www.lapua.com/view_reload_tab...iteid=products

    If you keep an eye on this url: http://www.bds.org.uk/south_east_scotland.html

    you will see us schedule a reloading evening some time in the winter.

    Regards JCS

  3. #3
    Quote Originally Posted by jcampbellsmith View Post
    .....If you keep an eye on this url: http://www.bds.org.uk/south_east_scotland.html

    you will see us schedule a reloading evening some time in the winter.

    Regards JCS
    Just to confirm that non-members are very welcome.

  4. #4
    http://stevespages.com/243_2_100.html

    Check this out...I used 44.5gn Vit. N160 with a 95gn Nosler for many years in a 20" Steyr Mannlicher.
    Work your load up carefully.
    Blaser K95 Luxus Kipplaufbüchse .25-06Rem. Zeiss 8x56, 110gn Nosler Accubond = Game Over!

  5. #5
    Products - Lapua

    This should give a bit of a pointer for a 100gr bullet.

    Cheers + ATVB

    Philip

  6. #6
    Have a look at the following table for 20 inch barrel Speer BTSP and N160, hope it helps.

    Cartridge : .243 Win.
    Bullet : .243, 100, Speer BTSP 1220
    Useable Case Capaci: 49.784 grain H2O = 3.232 cm³
    Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
    Barrel Length : 20.0 inch = 508.0 mm
    Powder : Vihtavuori N160
    Predicted data by increasing and decreasing the given charge,
    incremented in steps of 0.227% of nominal charge.
    CAUTION: Figures exceed maximum and minimum recommended loads !
    Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
    % % Grains fps ft.lbs psi psi % ms
    -02.3 98 43.00 2672 1585 48683 12187 93.8 1.156
    -02.0 98 43.10 2678 1593 49026 12219 93.9 1.153
    -01.8 98 43.20 2684 1600 49372 12249 94.0 1.149
    -01.6 98 43.30 2691 1608 49720 12280 94.1 1.145
    -01.4 99 43.40 2697 1615 50070 12311 94.2 1.141
    -01.1 99 43.50 2704 1623 50423 12341 94.3 1.138
    -00.9 99 43.60 2710 1631 50779 12371 94.4 1.134
    -00.7 99 43.70 2716 1638 51137 12402 94.6 1.130
    -00.5 100 43.80 2723 1646 51498 12432 94.7 1.126 ! Near Maximum !
    -00.2 100 43.90 2729 1654 51861 12461 94.8 1.122 ! Near Maximum !
    +00.0 100 44.00 2735 1662 52227 12491 94.9 1.119 ! Near Maximum !
    +00.2 100 44.10 2742 1669 52595 12520 95.0 1.115 ! Near Maximum !
    +00.5 100 44.20 2748 1677 52967 12550 95.1 1.112 ! Near Maximum !
    +00.7 101 44.30 2755 1685 53340 12579 95.2 1.108 ! Near Maximum !
    +00.9 101 44.40 2761 1693 53717 12607 95.3 1.104 ! Near Maximum !
    +01.1 101 44.50 2767 1701 54096 12636 95.4 1.101 ! Near Maximum !
    Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
    Data for burning rate increased by 10% relative to nominal value:
    +Ba 100 44.00 2878 1840 61548 12711 99.0 1.037 !DANGEROUS LOAD-DO NOT USE!
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba 100 44.00 2557 1452 43094 11735 87.3 1.223

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