QL for 257 Weatherby
- Thread starter frankm
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,312
- 5,975
Cartridge : .257 Weath. Mag
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 79.888 grain H2O = 5.187 cm³
Cartridge O.A.L. L6: 3.420 inch = 86.87 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-33 *C
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 93 74.25 3122 2381 43339 14908 92.9 1.413
-09.0 94 75.08 3165 2446 45059 15117 93.6 1.388
-08.0 95 75.90 3207 2513 46856 15319 94.3 1.362
-07.0 96 76.73 3250 2580 48735 15513 95.0 1.337
-06.0 97 77.55 3293 2649 50699 15699 95.6 1.313
-05.0 98 78.38 3336 2718 52738 15875 96.2 1.289
-04.0 99 79.20 3379 2789 54855 16043 96.7 1.266
-03.0 100 80.03 3422 2861 57059 16201 97.3 1.243 ! Near Maximum !
-02.0 101 80.85 3465 2933 59358 16349 97.7 1.220 ! Near Maximum !
-01.0 102 81.68 3508 3006 61754 16487 98.1 1.198 ! Near Maximum !
+00.0 103 82.50 3551 3081 64254 16614 98.5 1.176 ! Near Maximum !
+01.0 104 83.33 3595 3156 66863 16729 98.9 1.155 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 84.15 3638 3232 69587 16833 99.2 1.133 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 84.98 3681 3309 72432 16925 99.4 1.113 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 85.80 3723 3386 75404 17005 99.6 1.093 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 86.63 3766 3465 78512 17072 99.8 1.073 !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 103 82.50 3761 3454 80288 16176 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 82.50 3263 2601 49379 15869 91.1 1.319
Unfortunately, the Sierra Game Changer is not in my data base. The AccuBond is stepping out, however. That should deliver a heckuva blow to any game you may hunt.
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 79.888 grain H2O = 5.187 cm³
Cartridge O.A.L. L6: 3.420 inch = 86.87 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-33 *C
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 93 74.25 3122 2381 43339 14908 92.9 1.413
-09.0 94 75.08 3165 2446 45059 15117 93.6 1.388
-08.0 95 75.90 3207 2513 46856 15319 94.3 1.362
-07.0 96 76.73 3250 2580 48735 15513 95.0 1.337
-06.0 97 77.55 3293 2649 50699 15699 95.6 1.313
-05.0 98 78.38 3336 2718 52738 15875 96.2 1.289
-04.0 99 79.20 3379 2789 54855 16043 96.7 1.266
-03.0 100 80.03 3422 2861 57059 16201 97.3 1.243 ! Near Maximum !
-02.0 101 80.85 3465 2933 59358 16349 97.7 1.220 ! Near Maximum !
-01.0 102 81.68 3508 3006 61754 16487 98.1 1.198 ! Near Maximum !
+00.0 103 82.50 3551 3081 64254 16614 98.5 1.176 ! Near Maximum !
+01.0 104 83.33 3595 3156 66863 16729 98.9 1.155 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 84.15 3638 3232 69587 16833 99.2 1.133 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 84.98 3681 3309 72432 16925 99.4 1.113 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 85.80 3723 3386 75404 17005 99.6 1.093 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 86.63 3766 3465 78512 17072 99.8 1.073 !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 103 82.50 3761 3454 80288 16176 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 82.50 3263 2601 49379 15869 91.1 1.319
Unfortunately, the Sierra Game Changer is not in my data base. The AccuBond is stepping out, however. That should deliver a heckuva blow to any game you may hunt.
- Thread starter
- #3
Frank, I know it isn’t exactly what you were asking for but this is what RL33 did in my brothers 24” Vanguard with 120 PTs.
Quickload needs to be tweaked a bit for the long Freebore of Wby and similar cartridges.
Anyhow, it was very accurate as well. So assuming you get the accuracy I’ll bet you get some serious speed with the 110’s.
