DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
Quite conclusive, I'd say. Very nice.
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Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 190, Nosler AccuBond LR 58456 G7
Useable Case Capaci: 78.945 grain H2O = 5.126 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 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 1.0% 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
-10.0 89 69.75 2747 3184 43582 12213 99.8 1.393
-09.0 90 70.53 2779 3258 45203 12293 99.9 1.370
-08.0 91 71.30 2811 3333 46889 12363 100.0 1.347
-07.0 92 72.08 2842 3408 48646 12425 100.0 1.325
-06.0 93 72.85 2874 3484 50475 12480 100.0 1.302
-05.0 94 73.63 2905 3560 52383 12534 100.0 1.281
-04.0 95 74.40 2936 3636 54369 12587 100.0 1.259
-03.0 96 75.18 2967 3713 56427 12639 100.0 1.238 ! Near Maximum !
-02.0 97 75.95 2997 3790 58558 12689 100.0 1.218 ! Near Maximum !
-01.0 98 76.73 3028 3868 60770 12739 100.0 1.198 ! Near Maximum !
+00.0 99 77.50 3058 3946 63068 12788 100.0 1.178 ! Near Maximum !
+01.0 100 78.28 3089 4025 65457 12835 100.0 1.159 !DANGEROUS LOAD-DO NOT USE!
+02.0 101 79.05 3119 4104 67941 12881 100.0 1.140 !DANGEROUS LOAD-DO NOT USE!
+03.0 102 79.83 3149 4184 70523 12926 100.0 1.122 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 80.60 3179 4264 73210 12969 100.0 1.103 !DANGEROUS LOAD-DO NOT USE!
+05.0 104 81.38 3209 4345 76006 13012 100.0 1.086 !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 99 77.50 3182 4271 78951 12274 100.0 1.080 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 77.50 2867 3467 48455 13344 98.9 1.312
Soooooooooo bout 75 grains is a safe max! I run 77 grains behind Hornady 178 grain ELD-X. ThanksDrMike":2met7nnq said:Welcome aboard. Hope this helps:
Code:Cartridge : .300 Win. Mag.(SAAMI) Bullet : .308, 190, Nosler AccuBond LR 58456 G7 Useable Case Capaci: 78.945 grain H2O = 5.126 cm³ Cartridge O.A.L. L6: 3.340 inch = 84.84 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 1.0% 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 -10.0 89 69.75 2747 3184 43582 12213 99.8 1.393 -09.0 90 70.53 2779 3258 45203 12293 99.9 1.370 -08.0 91 71.30 2811 3333 46889 12363 100.0 1.347 -07.0 92 72.08 2842 3408 48646 12425 100.0 1.325 -06.0 93 72.85 2874 3484 50475 12480 100.0 1.302 -05.0 94 73.63 2905 3560 52383 12534 100.0 1.281 -04.0 95 74.40 2936 3636 54369 12587 100.0 1.259 -03.0 96 75.18 2967 3713 56427 12639 100.0 1.238 ! Near Maximum ! -02.0 97 75.95 2997 3790 58558 12689 100.0 1.218 ! Near Maximum ! -01.0 98 76.73 3028 3868 60770 12739 100.0 1.198 ! Near Maximum ! +00.0 99 77.50 3058 3946 63068 12788 100.0 1.178 ! Near Maximum ! +01.0 100 78.28 3089 4025 65457 12835 100.0 1.159 !DANGEROUS LOAD-DO NOT USE! +02.0 101 79.05 3119 4104 67941 12881 100.0 1.140 !DANGEROUS LOAD-DO NOT USE! +03.0 102 79.83 3149 4184 70523 12926 100.0 1.122 !DANGEROUS LOAD-DO NOT USE! +04.0 103 80.60 3179 4264 73210 12969 100.0 1.103 !DANGEROUS LOAD-DO NOT USE! +05.0 104 81.38 3209 4345 76006 13012 100.0 1.086 !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 99 77.50 3182 4271 78951 12274 100.0 1.080 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 99 77.50 2867 3467 48455 13344 98.9 1.312
Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 178, Hornady ELD-X 3074 G7
Useable Case Capaci: 79.501 grain H2O = 5.162 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 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 1.0% 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
-10.0 91 71.37 2828 3160 43395 12388 99.5 1.355
-09.0 92 72.16 2861 3236 45028 12479 99.7 1.331
-08.0 93 72.96 2895 3313 46730 12560 99.8 1.309
-07.0 94 73.75 2929 3390 48504 12632 99.9 1.286
-06.0 95 74.54 2962 3467 50353 12695 100.0 1.264
-05.0 96 75.34 2995 3546 52283 12748 100.0 1.243
-04.0 97 76.13 3028 3624 54294 12797 100.0 1.222
-03.0 98 76.92 3061 3703 56389 12845 100.0 1.201 ! Near Maximum !
-02.0 99 77.71 3094 3783 58590 12892 100.0 1.181 ! Near Maximum !
-01.0 100 78.51 3126 3863 60874 12938 100.0 1.161 ! Near Maximum !
+00.0 101 79.30 3159 3943 63244 12982 100.0 1.141 ! Near Maximum !
+01.0 102 80.09 3191 4024 65708 13026 100.0 1.122 !DANGEROUS LOAD-DO NOT USE!
+02.0 103 80.89 3223 4105 68273 13068 100.0 1.104 !DANGEROUS LOAD-DO NOT USE!
+03.0 104 81.68 3255 4187 70946 13108 100.0 1.085 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 82.47 3287 4270 73730 13147 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
+05.0 106 83.27 3319 4353 76633 13185 100.0 1.049 !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 101 79.30 3292 4283 79532 12442 100.0 1.044 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 79.30 2951 3442 48629 13470 98.4 1.273
Cool thanks just gotta figure out what makes them shootDrMike":3bio62uh said:Seventy-five grains would certainly be safe. I would work up carefully, watching for pressure signs, to 77.5 grains with the 190 grain ABLR. QuickLoad projects a slightly higher charge for the 178 grain Hornady ELD-X.
Code:Cartridge : .300 Win. Mag.(SAAMI) Bullet : .308, 178, Hornady ELD-X 3074 G7 Useable Case Capaci: 79.501 grain H2O = 5.162 cm³ Cartridge O.A.L. L6: 3.340 inch = 84.84 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 1.0% 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 -10.0 91 71.37 2828 3160 43395 12388 99.5 1.355 -09.0 92 72.16 2861 3236 45028 12479 99.7 1.331 -08.0 93 72.96 2895 3313 46730 12560 99.8 1.309 -07.0 94 73.75 2929 3390 48504 12632 99.9 1.286 -06.0 95 74.54 2962 3467 50353 12695 100.0 1.264 -05.0 96 75.34 2995 3546 52283 12748 100.0 1.243 -04.0 97 76.13 3028 3624 54294 12797 100.0 1.222 -03.0 98 76.92 3061 3703 56389 12845 100.0 1.201 ! Near Maximum ! -02.0 99 77.71 3094 3783 58590 12892 100.0 1.181 ! Near Maximum ! -01.0 100 78.51 3126 3863 60874 12938 100.0 1.161 ! Near Maximum ! +00.0 101 79.30 3159 3943 63244 12982 100.0 1.141 ! Near Maximum ! +01.0 102 80.09 3191 4024 65708 13026 100.0 1.122 !DANGEROUS LOAD-DO NOT USE! +02.0 103 80.89 3223 4105 68273 13068 100.0 1.104 !DANGEROUS LOAD-DO NOT USE! +03.0 104 81.68 3255 4187 70946 13108 100.0 1.085 !DANGEROUS LOAD-DO NOT USE! +04.0 105 82.47 3287 4270 73730 13147 100.0 1.067 !DANGEROUS LOAD-DO NOT USE! +05.0 106 83.27 3319 4353 76633 13185 100.0 1.049 !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 101 79.30 3292 4283 79532 12442 100.0 1.044 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 101 79.30 2951 3442 48629 13470 98.4 1.273
Again, in this instance, I would not have a problem working up toward 79 grains.