Quote
Cartridge : 7 mm WSM
Bullet : .284, 162, Hornady A-MAX 28402, Friction Proofed
Useable Case Capaci: 71.216 grain H2O = 4.624 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 7828 SSC

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 60.30 2745 2710 43811 12154 96.2 1.384
-09.0 90 60.97 2778 2775 45382 12291 96.6 1.361
-08.0 91 61.64 2811 2841 47009 12421 97.1 1.339
-07.0 92 62.31 2843 2908 48699 12546 97.5 1.317
-06.0 93 62.98 2876 2976 50452 12665 97.9 1.296
-05.0 94 63.65 2909 3044 52271 12778 98.2 1.275
-04.0 95 64.32 2942 3112 54159 12885 98.5 1.254
-03.0 96 64.99 2974 3182 56119 12984 98.8 1.234 ! Near Maximum !
-02.0 97 65.66 3007 3251 58155 13078 99.1 1.215 ! Near Maximum !
-01.0 98 66.33 3039 3322 60270 13164 99.3 1.195 ! Near Maximum !
+00.0 99 67.00 3071 3393 62468 13243 99.5 1.176 ! Near Maximum !
+01.0 100 67.67 3103 3464 64752 13315 99.7 1.157 !DANGEROUS LOAD-DO NOT USE!
+02.0 101 68.34 3135 3536 67129 13380 99.8 1.139 !DANGEROUS LOAD-DO NOT USE!
+03.0 102 69.01 3167 3609 69599 13437 99.9 1.121 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 69.68 3199 3682 72171 13486 100.0 1.103 !DANGEROUS LOAD-DO NOT USE!
+05.0 104 70.35 3231 3755 74847 13528 100.0 1.086 !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 99 67.00 3148 3565 69350 13005 100.0 1.127 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 99 67.00 2979 3191 56033 13269 97.7 1.232 ! Near Maximum !



Quote
Cartridge : 7 mm WSM
Bullet : .284, 162, Hornady A-MAX 28402, Friction Proofed
Useable Case Capaci: 71.216 grain H2O = 4.624 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Norma MRP

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 88 60.30 2734 2689 42322 12291 98.4 1.425
-09.0 89 60.97 2766 2752 43873 12408 98.7 1.401
-08.0 90 61.64 2798 2816 45474 12519 99.0 1.379
-07.0 91 62.31 2830 2880 47124 12623 99.2 1.356
-06.0 92 62.98 2861 2944 48827 12720 99.5 1.334
-05.0 93 63.65 2893 3010 50589 12810 99.6 1.313
-04.0 94 64.32 2924 3075 52411 12893 99.8 1.292
-03.0 95 64.99 2955 3141 54297 12969 99.9 1.271 ! Near Maximum !
-02.0 96 65.66 2986 3207 56248 13037 100.0 1.251 ! Near Maximum !
-01.0 97 66.33 3017 3274 58266 13098 100.0 1.231 ! Near Maximum !
+00.0 98 67.00 3048 3341 60356 13152 100.0 1.212 ! Near Maximum !
+01.0 99 67.67 3078 3408 62520 13204 100.0 1.193 ! Near Maximum !
+02.0 100 68.34 3109 3476 64761 13255 100.0 1.174 !DANGEROUS LOAD-DO NOT USE!
+03.0 101 69.01 3139 3544 67081 13305 100.0 1.156 !DANGEROUS LOAD-DO NOT USE!
+04.0 102 69.68 3169 3612 69486 13354 100.0 1.138 !DANGEROUS LOAD-DO NOT USE!
+05.0 103 70.35 3199 3681 71978 13401 100.0 1.121 !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 98 67.00 3119 3498 67187 12870 100.0 1.160 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 98 67.00 2960 3151 53613 13362 99.3 1.273