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Reloading Berger Bullets

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Could someone with quickload help me?

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Unread 04-06-2009, 03:05 PM
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Join Date: Jul 2007
Posts: 36
Could someone with quickload help me?

I am wanting to load the 75 grain swift scirocco II in my 22-250 and can't find any data for it.

I will be shooting them in a Savage 22-250 with a 1 in 9" twist and a 22" barrel. I am gonna try seating them @ 2.490" OAL. Could someone please run some numbers for me to help with powder selection.

Thanks!!!

Justin
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  •   #2  
    Unread 04-06-2009, 06:36 PM
    gbp gbp is offline
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    Join Date: Aug 2006
    Location: California
    Posts: 227
    Re: Could someone with quickload help me?

    Cartridge : .22-250 Rem. (CIP)
    Bullet : .224, 75, Swift Scirocco
    Useable Case Capaci: 38.508 grain H2O = 2.500 cm³
    Cartridge O.A.L. L6: 2.490 inch = 63.25 mm
    Barrel Length : 22.0 inch = 558.8 mm
    Powder : Alliant Reloder-15

    Predicted data by increasing and decreasing the given charge,
    incremented in steps of 2.0% 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

    -20.0 73 26.01 2558 1090 31854 9036 92.4 1.369
    -18.0 75 26.66 2617 1141 33821 9301 93.5 1.335
    -16.0 77 27.31 2676 1193 35900 9557 94.4 1.302
    -14.0 79 27.96 2735 1246 38096 9804 95.3 1.270
    -12.0 81 28.61 2794 1300 40416 10040 96.2 1.237
    -10.0 82 29.26 2853 1355 42868 10264 96.9 1.203
    -08.0 84 29.91 2911 1411 45457 10477 97.6 1.170
    -06.0 86 30.56 2969 1468 48192 10677 98.2 1.138
    -04.0 88 31.21 3027 1525 51082 10863 98.7 1.107 ! Near Maximum !
    -02.0 90 31.86 3084 1584 54136 11035 99.1 1.077 ! Near Maximum !
    +00.0 92 32.51 3140 1642 57364 11192 99.5 1.049 ! Near Maximum !
    +02.0 93 33.16 3197 1702 60777 11334 99.7 1.021 !DANGEROUS LOAD-DO NOT USE!
    +04.0 95 33.81 3253 1762 64388 11459 99.9 0.995 !DANGEROUS LOAD-DO NOT USE!
    +06.0 97 34.46 3308 1822 68208 11567 100.0 0.969 !DANGEROUS LOAD-DO NOT USE!
    +08.0 99 35.11 3363 1883 72254 11659 100.0 0.945 !DANGEROUS LOAD-DO NOT USE!
    +10.0 101 35.76 3417 1944 76540 11746 100.0 0.921 !DANGEROUS LOAD-DO NOT USE!

    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 92 32.51 3264 1774 67323 10851 100.0 0.976 !DANGEROUS LOAD-DO NOT USE!
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba 92 32.51 2967 1466 47515 11058 95.2 1.144
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