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Cartridge : .257 Roberts Imp.
Bullet : .257, 115, Nosler BalTip 25115
Useable Case Capaci: 54.511 grain H2O = 3.539 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 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 78 41.92 2392 1461 25278 9885 89.7 1.655
-18.0 80 42.97 2459 1543 27033 10247 91.4 1.612
-16.0 81 44.02 2526 1629 28919 10593 92.9 1.570
-14.0 83 45.06 2594 1718 30949 10920 94.3 1.529
-12.0 85 46.11 2662 1809 33137 11227 95.6 1.489
-10.0 87 47.16 2730 1903 35496 11511 96.7 1.449
-08.0 89 48.21 2798 1999 38043 11770 97.7 1.406
-06.0 91 49.26 2866 2098 40792 12000 98.5 1.360
-04.0 93 50.30 2934 2199 43768 12202 99.1 1.316 ! Near Maximum !
-02.0 95 51.35 3002 2301 46989 12372 99.6 1.273 ! Near Maximum !
+00.0 97 52.40 3069 2405 50480 12508 99.9 1.232 ! Near Maximum !
+02.0 99 53.45 3136 2511 54270 12611 100.0 1.192 !DANGEROUS LOAD-DO NOT USE!
+04.0 101 54.50 3202 2618 58391 12687 100.0 1.153 !DANGEROUS LOAD-DO NOT USE!
+06.0 103 55.54 3267 2726 62875 12757 100.0 1.116 !DANGEROUS LOAD-DO NOT USE!
+08.0 105 56.59 3332 2835 67767 12823 100.0 1.080 !DANGEROUS LOAD-DO NOT USE!
+10.0 107 57.64 3397 2946 73086 12885 100.0 1.045 !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 97 52.40 3233 2668 64061 11939 100.0 1.120 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 52.40 2827 2041 39388 12344 94.4 1.376
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 95 42.30 2660 1728 34062 9972 92.8 1.414
-09.0 96 42.77 2696 1775 35308 10115 93.5 1.393
-08.0 97 43.24 2732 1823 36603 10252 94.2 1.373
-07.0 98 43.71 2769 1872 37961 10384 94.9 1.350
-06.0 99 44.18 2805 1922 39374 10510 95.5 1.327
-05.0 100 44.65 2842 1973 40851 10630 96.1 1.303
-04.0 101 45.12 2879 2024 42391 10744 96.7 1.281
-03.0 102 45.59 2915 2076 44003 10850 97.2 1.258
-02.0 103 46.06 2952 2129 45686 10949 97.7 1.236 ! Near Maximum !
-01.0 104 46.53 2989 2182 47447 11042 98.1 1.215 ! Near Maximum !
+00.0 105 47.00 3026 2236 49286 11126 98.5 1.193 ! Near Maximum !
+01.0 106 47.47 3063 2291 51219 11202 98.8 1.172 ! Near Maximum !
+02.0 107 47.94 3100 2347 53241 11270 99.1 1.152 !DANGEROUS LOAD-DO NOT USE!
+03.0 108 48.41 3136 2403 55358 11330 99.4 1.131 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 48.88 3173 2459 57582 11381 99.6 1.111 !DANGEROUS LOAD-DO NOT USE!
+05.0 110 49.35 3210 2517 59914 11424 99.8 1.092 !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 105 47.00 3219 2531 62093 10704 100.0 1.083 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 47.00 2755 1854 38954 10559 89.8 1.335
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 95 42.30 2721 1808 34062 9191 93.9 1.476
-09.0 96 42.77 2757 1857 35308 9313 94.6 1.454
-08.0 97 43.24 2793 1906 36603 9430 95.2 1.433
-07.0 98 43.71 2830 1956 37961 9542 95.8 1.410
-06.0 99 44.18 2866 2007 39374 9647 96.4 1.385
-05.0 100 44.65 2903 2058 40851 9747 96.9 1.361
-04.0 101 45.12 2940 2111 42391 9841 97.4 1.338
-03.0 102 45.59 2976 2164 44003 9928 97.9 1.315
-02.0 103 46.06 3013 2217 45686 10008 98.3 1.292 ! Near Maximum !
-01.0 104 46.53 3049 2271 47447 10081 98.7 1.270 ! Near Maximum !
+00.0 105 47.00 3086 2326 49286 10148 99.0 1.248 ! Near Maximum !
+01.0 106 47.47 3123 2382 51219 10206 99.3 1.226 ! Near Maximum !
+02.0 107 47.94 3159 2438 53241 10257 99.5 1.205 !DANGEROUS LOAD-DO NOT USE!
+03.0 108 48.41 3196 2494 55358 10301 99.7 1.184 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 48.88 3232 2552 57582 10336 99.8 1.163 !DANGEROUS LOAD-DO NOT USE!
+05.0 110 49.35 3268 2609 59914 10364 99.9 1.143 !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 105 47.00 3274 2618 62093 9691 100.0 1.135 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 47.00 2818 1939 38954 9752 91.0 1.395
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 45.921 grain H2O = 2.982 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-15
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.161% 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
-11.6 84 35.55 2761 1862 44044 8905 98.3 1.292
-10.4 85 36.02 2793 1906 45624 9002 98.6 1.271
-09.3 86 36.48 2826 1950 47256 9095 98.8 1.251
-08.1 87 36.95 2858 1995 48943 9184 99.1 1.230
-07.0 88 37.42 2890 2040 50686 9268 99.3 1.211
-05.8 89 37.89 2922 2085 52488 9348 99.5 1.191
-04.6 91 38.35 2954 2131 54351 9423 99.6 1.173
-03.5 92 38.82 2985 2176 56277 9493 99.8 1.154 ! Near Maximum !
-02.3 93 39.29 3016 2222 58269 9558 99.9 1.136 ! Near Maximum !
-01.2 94 39.75 3048 2269 60329 9619 99.9 1.119 ! Near Maximum !
+00.0 95 40.22 3079 2315 62459 9674 100.0 1.102 ! Near Maximum !
+01.2 96 40.69 3109 2362 64663 9724 100.0 1.085 !DANGEROUS LOAD-DO NOT USE!
+02.3 97 41.15 3140 2408 66941 9772 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
+03.5 98 41.62 3170 2455 69303 9819 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
+04.6 99 42.09 3201 2502 71746 9865 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
+05.8 101 42.55 3231 2549 74275 9910 100.0 1.021 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 95 40.22 3135 2401 67930 9477 100.0 1.063 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 95 40.22 3009 2212 57009 9806 99.3 1.146 ! Near Maximum !
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 45.921 grain H2O = 2.982 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-17
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.051% 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
-10.5 89 39.74 2850 1984 43331 9775 99.1 1.269
-09.5 91 40.21 2883 2030 44893 9858 99.4 1.249
-08.4 92 40.67 2916 2077 46513 9934 99.6 1.228
-07.4 93 41.14 2949 2124 48200 10004 99.7 1.208
-06.3 94 41.61 2981 2171 49950 10067 99.9 1.189
-05.3 95 42.08 3014 2218 51768 10124 99.9 1.170
-04.2 96 42.54 3046 2266 53657 10174 100.0 1.151
-03.2 97 43.01 3078 2314 55621 10218 100.0 1.133 ! Near Maximum !
-02.1 98 43.48 3110 2362 57664 10259 100.0 1.115 ! Near Maximum !
-01.1 99 43.94 3142 2411 59789 10299 100.0 1.098 ! Near Maximum !
+00.0 100 44.41 3173 2459 62000 10338 100.0 1.080 ! Near Maximum !
+01.1 101 44.88 3205 2508 64302 10377 100.0 1.063 !DANGEROUS LOAD-DO NOT USE!
+02.1 102 45.34 3236 2558 66700 10414 100.0 1.047 !DANGEROUS LOAD-DO NOT USE!
+03.2 103 45.81 3267 2607 69194 10450 100.0 1.030 !DANGEROUS LOAD-DO NOT USE!
+04.2 104 46.28 3298 2657 71799 10486 100.0 1.014 !DANGEROUS LOAD-DO NOT USE!
+05.3 105 46.74 3329 2707 74510 10520 100.0 0.999 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 100 44.41 3239 2562 68701 10108 100.0 1.038 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 100 44.41 3092 2335 55790 10588 99.8 1.129 ! Near Maximum !
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 45.921 grain H2O = 2.982 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-16
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.051% 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
-10.5 96 39.74 2841 1972 43842 9639 98.6 1.272
-09.5 98 40.21 2874 2018 45461 9725 98.9 1.251
-08.4 99 40.67 2907 2064 47140 9805 99.1 1.231
-07.4 100 41.14 2940 2111 48894 9880 99.3 1.210
-06.3 101 41.61 2973 2158 50712 9949 99.5 1.191
-05.3 102 42.08 3005 2206 52606 10012 99.7 1.172
-04.2 103 42.54 3038 2254 54574 10069 99.8 1.153
-03.2 104 43.01 3070 2302 56624 10120 99.9 1.134 ! Near Maximum !
-02.1 105 43.48 3102 2350 58758 10164 100.0 1.116 ! Near Maximum !
-01.1 107 43.94 3134 2399 60981 10202 100.0 1.098 ! Near Maximum !
+00.0 108 44.41 3165 2447 63289 10236 100.0 1.081 ! Near Maximum !
+01.1 109 44.88 3197 2496 65680 10269 100.0 1.064 !DANGEROUS LOAD-DO NOT USE!
+02.1 110 45.34 3228 2546 68163 10301 100.0 1.047 !DANGEROUS LOAD-DO NOT USE!
+03.2 111 45.81 3260 2595 70745 10331 100.0 1.031 !DANGEROUS LOAD-DO NOT USE!
+04.2 112 46.28 3291 2645 73432 10361 100.0 1.014 !DANGEROUS LOAD-DO NOT USE!
+05.3 113 46.74 3322 2695 76228 10390 100.0 0.999 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 108 44.41 3232 2551 70295 9986 100.0 1.038 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 108 44.41 3082 2320 56484 10452 99.4 1.131 ! Near Maximum !
25FAN":1uue5hpq said:Quick update. Fire formed Hornady 6.5 creedmoor brass to .250 AI . Case Capacity 52.5gr of Water. Loaded Reloader 17, 90gr. HPFB to 3450fps Looks good.26 inch barrel. Looking for Quick Load data for Reloader 26 in the .250AI . 52.5 case Capacity
Rifle Will be used ground blind and Tower stand. Thinking cutting barrel to 21.5'' Long.
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 47.427 grain H2O = 3.079 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-26 ?
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.798% 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
-08.0 94 44.10 2887 2035 39041 9778 98.2 1.397
-07.2 95 44.49 2915 2075 40180 9847 98.5 1.378
-06.4 95 44.87 2943 2115 41358 9912 98.8 1.360
-05.6 96 45.25 2970 2155 42575 9972 99.0 1.342
-04.8 97 45.63 2998 2196 43833 10028 99.2 1.324
-04.0 98 46.02 3026 2237 45134 10079 99.4 1.306
-03.2 99 46.40 3054 2278 46480 10126 99.6 1.289
-02.4 100 46.78 3082 2319 47873 10168 99.7 1.272
-01.6 100 47.16 3109 2361 49314 10206 99.8 1.255
-00.8 101 47.55 3137 2403 50803 10239 99.9 1.238
+00.0 102 47.93 3164 2445 52351 10267 100.0 1.221 ! Near Maximum !
+00.8 103 48.31 3191 2488 53952 10290 100.0 1.205 ! Near Maximum !
+01.6 104 48.70 3219 2530 55611 10309 100.0 1.189 ! Near Maximum !
+02.4 104 49.08 3246 2573 57329 10327 100.0 1.173 ! Near Maximum !
+03.2 105 49.46 3273 2616 59111 10344 100.0 1.157 ! Near Maximum !
+04.0 106 49.84 3300 2659 60958 10360 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 102 47.93 3253 2585 59082 9979 100.0 1.164 ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba 102 47.93 3054 2277 46358 10415 98.6 1.287