Would someone mind helping me?
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DrMike
Ballistician
- Nov 8, 2006
- 36,935
- 5,129
Code:
Cartridge : .280 Ack Imp
Bullet : .284, 168, Berger VLD G7 #28401
Useable Case Capaci: 64.315 grain H2O = 4.176 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-23
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 85 49.04 2363 2083 32068 9811 98.6 1.611
-18.0 87 50.27 2421 2186 34346 10025 99.2 1.572
-16.0 89 51.49 2478 2290 36791 10216 99.6 1.531
-14.0 91 52.72 2535 2397 39420 10382 99.9 1.481
-12.0 93 53.94 2591 2504 42246 10523 100.0 1.434
-10.0 95 55.17 2647 2613 45289 10643 100.0 1.389
-08.0 97 56.40 2702 2723 48565 10760 100.0 1.345
-06.0 99 57.62 2756 2833 52062 10873 100.0 1.304
-04.0 101 58.85 2810 2945 55793 10983 100.0 1.264 ! Near Maximum !
-02.0 104 60.07 2863 3058 59792 11090 100.0 1.226 ! Near Maximum !
+00.0 106 61.30 2916 3173 64082 11192 100.0 1.189 ! Near Maximum !
+02.0 108 62.53 2969 3288 68688 11291 100.0 1.153 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 63.75 3022 3406 73638 11386 100.0 1.119 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 64.98 3074 3524 78965 11477 100.0 1.086 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 66.20 3126 3645 84706 11563 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+10.0 116 67.43 3178 3767 90901 11644 100.0 1.024 !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 106 61.30 3011 3383 78222 10811 100.0 1.102 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 61.30 2770 2863 50386 11734 99.9 1.308
Code:
Cartridge : .280 Ack Imp
Bullet : .284, 168, Berger VLD G7 #28401
Useable Case Capaci: 64.315 grain H2O = 4.176 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26
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 80 51.12 2382 2117 30839 10746 96.5 1.632
-18.0 82 52.40 2446 2232 33114 11033 97.5 1.588
-16.0 84 53.68 2510 2350 35573 11293 98.4 1.545
-14.0 86 54.95 2573 2470 38230 11525 99.0 1.498
-12.0 88 56.23 2637 2593 41107 11726 99.5 1.447
-10.0 90 57.51 2699 2718 44221 11895 99.9 1.399
-08.0 92 58.79 2762 2845 47600 12029 100.0 1.352
-06.0 94 60.07 2823 2973 51267 12137 100.0 1.307
-04.0 96 61.34 2884 3103 55255 12240 100.0 1.263 ! Near Maximum !
-02.0 98 62.62 2944 3234 59570 12339 100.0 1.222 ! Near Maximum !
+00.0 100 63.90 3004 3367 64218 12433 100.0 1.182 ! Near Maximum !
+02.0 102 65.18 3064 3501 69247 12522 100.0 1.143 !DANGEROUS LOAD-DO NOT USE!
+04.0 104 66.46 3123 3638 74696 12606 100.0 1.106 !DANGEROUS LOAD-DO NOT USE!
+06.0 106 67.73 3182 3776 80610 12684 100.0 1.071 !DANGEROUS LOAD-DO NOT USE!
+08.0 108 69.01 3240 3917 87040 12757 100.0 1.036 !DANGEROUS LOAD-DO NOT USE!
+10.0 110 70.29 3299 4059 94046 12824 100.0 1.003 !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 100 63.90 3123 3637 80530 11927 100.0 1.084 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 100 63.90 2819 2965 49325 13017 99.1 1.315- Thread starter
- #3
DrMike
Ballistician
- Nov 8, 2006
- 36,935
- 5,129
Code:
Cartridge : .280 Ack Imp
Bullet : .284, 168, Berger VLD G7 #28401
Useable Case Capaci: 64.315 grain H2O = 4.176 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64000 psi, or 441 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
23 loads produced a Loading Ratio below user-defined minimum of 93%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 100.2 63.8 4.14 3002 100.0 64000 12428 1.184 ! Near Maximum !
Alliant Reloder-25 109.2 64.4 4.17 2985 100.0 64000 12107 1.169 ! Near Maximum !
Norma MRP 101.1 62.6 4.05 2983 100.0 64000 12597 1.180 ! Near Maximum !
Vihtavuori N560 103.0 62.4 4.04 2983 99.0 64000 13028 1.174 ! Near Maximum !
Accurate MAGPRO 103.2 65.0 4.22 2975 98.0 64000 13140 1.180 ! Near Maximum !
IMR 7828 107.5 61.9 4.01 2971 99.3 64000 12592 1.164 ! Near Maximum !
IMR 7828 SSC 101.7 61.9 4.01 2971 99.3 64000 12592 1.164 ! Near Maximum !
Vihtavuori N570 110.0 68.8 4.46 2968 95.4 58659 14122 1.212 ! Near Maximum !
Alliant Reloder-22 103.2 61.9 4.01 2957 99.8 64000 12473 1.180 ! Near Maximum !
Winchester WXR 106.0 62.2 4.03 2956 99.8 64000 12495 1.181 ! Near Maximum !
Norma MRP 2 110.0 65.2 4.23 2946 99.3 60693 12939 1.209 ! Near Maximum !
Ramshot Magnum 103.0 66.5 4.31 2940 100.0 64000 11891 1.173 ! Near Maximum !
Alliant Reloder-23 105.7 61.3 3.97 2915 100.0 64000 11191 1.189 ! Near Maximum !
Alliant Reloder-19 100.1 59.3 3.84 2914 99.7 64000 11892 1.179 ! Near Maximum !
Ramshot Hunter 95.6 58.5 3.79 2902 100.0 64000 11414 1.186 ! Near Maximum !
Alliant Reloder-33 110.0 70.7 4.58 2892 94.8 54928 13739 1.250
Hodgdon H4831 105.4 60.7 3.93 2892 98.7 64000 11791 1.176 ! Near Maximum !
Hodgdon H4831 SC 101.3 60.7 3.93 2892 98.7 64000 11791 1.176 ! Near Maximum !
Norma 204 95.0 58.1 3.77 2891 99.6 64000 11594 1.179 ! Near Maximum !
Hodgdon H1000 110.0 64.5 4.18 2889 99.0 59695 12153 1.198 ! Near Maximum !
Norma URP 95.1 55.8 3.62 2877 100.0 64000 10915 1.193 ! Near Maximum !
Accurate 4350 94.2 55.9 3.62 2871 100.0 64000 10861 1.210 ! Near Maximum !
Winchester Supreme 780 98.7 61.7 4.00 2868 99.7 64000 11308 1.184 ! Near Maximum !
Vihtavuori N165 105.5 61.9 4.01 2862 99.9 64000 11075 1.189 ! Near Maximum !
Accurate 3100 103.3 61.2 3.97 2860 100.0 64000 10939 1.213 ! Near Maximum !
IMR 4831 99.8 56.7 3.67 2859 100.0 64000 10676 1.202 ! Near Maximum !
Vihtavuori N160 105.6 60.0 3.89 2848 99.1 64000 11143 1.184 ! Near Maximum !
Hodgdon Hybrid 100V 97.6 56.0 3.63 2831 100.0 64000 10064 1.195 ! Near Maximum !- Thread starter
- #5
- Thread starter
- #6
DrMike
Ballistician
- Nov 8, 2006
- 36,935
- 5,129
You would note an increase in charge before hitting max chamber pressure, but the increased velocity would be marginal, if measurable. How much of an increase in OAL are you envisioning? Remember, the more data you provide the more accurate the QL projection. Measured case volume and measured OAL are critical to accurate measurements.
- Thread starter
- #8
