223.
- Thread starter sask boy
- Start date
.- Thread starter
- #2
DrMike
Ballistician
- Nov 8, 2006
- 37,536
- 6,589
Assume you meant the BT, Dan.
Cartridge : .223 Rem. (SAAMI)
Bullet : .224, 50, Nosler BalTip 39522
Useable Case Capaci: 25.924 grain H2O = 1.683 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Benchmark
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 83 19.60 2659 785 28339 5021 83.7 1.273
-18.0 85 20.09 2722 823 30187 5184 85.0 1.240
-16.0 87 20.58 2786 862 32159 5343 86.3 1.208
-14.0 90 21.07 2849 901 34263 5499 87.6 1.176
-12.0 92 21.56 2913 942 36508 5651 88.8 1.146
-10.0 94 22.05 2977 984 38904 5798 89.9 1.114
-08.0 96 22.54 3040 1026 41462 5940 91.0 1.083
-06.0 98 23.03 3104 1070 44193 6077 92.1 1.052
-04.0 100 23.52 3167 1114 47113 6208 93.1 1.024 ! Near Maximum !
-02.0 102 24.01 3231 1159 50235 6332 94.0 0.996 ! Near Maximum !
+00.0 104 24.50 3294 1205 53575 6450 94.9 0.969 ! Near Maximum !
+02.0 106 24.99 3357 1251 57154 6560 95.7 0.943 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 25.48 3420 1299 60991 6662 96.4 0.917 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 25.97 3483 1347 65109 6756 97.1 0.893 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 26.46 3546 1396 69536 6840 97.7 0.870 !DANGEROUS LOAD-DO NOT USE!
+10.0 115 26.95 3609 1446 74299 6916 98.2 0.847 !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 104 24.50 3452 1323 62969 6520 98.9 0.904 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 24.50 3094 1063 44539 6125 87.8 1.052
Cartridge : .223 Rem. (SAAMI)
Bullet : .224, 50, Nosler BalTip 39522
Useable Case Capaci: 25.924 grain H2O = 1.683 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Benchmark
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 83 19.60 2659 785 28339 5021 83.7 1.273
-18.0 85 20.09 2722 823 30187 5184 85.0 1.240
-16.0 87 20.58 2786 862 32159 5343 86.3 1.208
-14.0 90 21.07 2849 901 34263 5499 87.6 1.176
-12.0 92 21.56 2913 942 36508 5651 88.8 1.146
-10.0 94 22.05 2977 984 38904 5798 89.9 1.114
-08.0 96 22.54 3040 1026 41462 5940 91.0 1.083
-06.0 98 23.03 3104 1070 44193 6077 92.1 1.052
-04.0 100 23.52 3167 1114 47113 6208 93.1 1.024 ! Near Maximum !
-02.0 102 24.01 3231 1159 50235 6332 94.0 0.996 ! Near Maximum !
+00.0 104 24.50 3294 1205 53575 6450 94.9 0.969 ! Near Maximum !
+02.0 106 24.99 3357 1251 57154 6560 95.7 0.943 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 25.48 3420 1299 60991 6662 96.4 0.917 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 25.97 3483 1347 65109 6756 97.1 0.893 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 26.46 3546 1396 69536 6840 97.7 0.870 !DANGEROUS LOAD-DO NOT USE!
+10.0 115 26.95 3609 1446 74299 6916 98.2 0.847 !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 104 24.50 3452 1323 62969 6520 98.9 0.904 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 24.50 3094 1063 44539 6125 87.8 1.052
- Thread starter
- #4
pharmseller
Handloader
- Feb 13, 2012
- 554
- 90
Nosler #7 posts 26.5 grains of Benchmark as their max load with 50 grain BT bullets. That's my load, 50 gr BT Varmint, 26.5 gr Benchmark, CCI400 primer, 2.276" OAL.
Scary accurate from my T3, right at 3400 fps.
P
Scary accurate from my T3, right at 3400 fps.
P
