250 Ackley: CFE 223 (Attn: DrMike)
- Thread starter brians356
- Start date
ScreaminEagle
Handloader
- Jan 20, 2011
- 1,373
- 0
That sounds like a sweet round!
Not sure what rifle you have, but here is some data at 52K PSI.. If you let me know the H20 capacity of your cases and the rifle, we can tune the data a little.
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 75, Hornady V-MAX 22520
Useable Case Capaci: 50.176 grain H2O = 3.258 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 25.0 inch = 635.0 mm
Powder : Hodgdon CFE223
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 71 36.80 2819 1324 27048 7506 87.2 1.365
-18.0 73 37.72 2888 1389 28823 7758 88.6 1.331
-16.0 75 38.64 2958 1457 30713 8003 90.0 1.298
-14.0 77 39.56 3028 1526 32734 8240 91.3 1.265
-12.0 79 40.48 3097 1598 34887 8468 92.5 1.233
-10.0 80 41.40 3167 1670 37185 8687 93.6 1.202
-08.0 82 42.32 3237 1745 39640 8895 94.7 1.167
-06.0 84 43.24 3306 1820 42261 9092 95.6 1.133
-04.0 86 44.16 3376 1898 45061 9275 96.5 1.101 ! Near Maximum !
-02.0 87 45.08 3445 1976 48064 9446 97.3 1.070 ! Near Maximum !
+00.0 89 46.00 3514 2056 51274 9602 98.0 1.040 ! Near Maximum !
+02.0 91 46.92 3582 2137 54713 9743 98.6 1.011 !DANGEROUS LOAD-DO NOT USE!
+04.0 93 47.84 3650 2219 58400 9868 99.0 0.983 !DANGEROUS LOAD-DO NOT USE!
+06.0 95 48.76 3718 2302 62347 9976 99.4 0.955 !DANGEROUS LOAD-DO NOT USE!
+08.0 96 49.68 3785 2386 66545 10067 99.7 0.929 !DANGEROUS LOAD-DO NOT USE!
+10.0 98 50.60 3852 2471 71031 10140 99.9 0.904 !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 89 46.00 3685 2262 61762 9447 100.0 0.962 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 89 46.00 3284 1797 41698 9234 91.5 1.140
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 85, Nosler BalTip 43004
Useable Case Capaci: 48.487 grain H2O = 3.148 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 25.0 inch = 635.0 mm
Powder : Hodgdon CFE223
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 71 35.20 2703 1379 27867 7534 89.8 1.420
-18.0 72 36.08 2768 1446 29682 7772 91.1 1.384
-16.0 74 36.96 2833 1515 31614 8003 92.3 1.350
-14.0 76 37.84 2898 1585 33674 8225 93.4 1.316
-12.0 78 38.72 2964 1658 35868 8438 94.5 1.283
-10.0 80 39.60 3029 1731 38206 8640 95.5 1.248
-08.0 81 40.48 3093 1806 40701 8831 96.3 1.213
-06.0 83 41.36 3158 1882 43359 9009 97.1 1.178
-04.0 85 42.24 3222 1960 46205 9175 97.8 1.145 ! Near Maximum !
-02.0 87 43.12 3287 2039 49241 9327 98.4 1.113 ! Near Maximum !
+00.0 88 44.00 3350 2118 52486 9465 98.9 1.082 !DANGEROUS LOAD-DO NOT USE!
+02.0 90 44.88 3414 2199 55950 9587 99.3 1.053 !DANGEROUS LOAD-DO NOT USE!
+04.0 92 45.76 3476 2281 59622 9694 99.6 1.024 !DANGEROUS LOAD-DO NOT USE!
+06.0 94 46.64 3539 2363 63526 9784 99.9 0.996 !DANGEROUS LOAD-DO NOT USE!
+08.0 95 47.52 3600 2447 67697 9857 100.0 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 48.40 3662 2531 72154 9913 100.0 0.944 !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 88 44.00 3500 2312 62982 9198 100.0 1.004 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 88 44.00 3144 1865 42622 9235 93.4 1.185
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 75, Hornady V-MAX 22520
Useable Case Capaci: 50.176 grain H2O = 3.258 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 25.0 inch = 635.0 mm
Powder : Hodgdon CFE223
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 71 36.80 2819 1324 27048 7506 87.2 1.365
-18.0 73 37.72 2888 1389 28823 7758 88.6 1.331
-16.0 75 38.64 2958 1457 30713 8003 90.0 1.298
-14.0 77 39.56 3028 1526 32734 8240 91.3 1.265
-12.0 79 40.48 3097 1598 34887 8468 92.5 1.233
-10.0 80 41.40 3167 1670 37185 8687 93.6 1.202
-08.0 82 42.32 3237 1745 39640 8895 94.7 1.167
-06.0 84 43.24 3306 1820 42261 9092 95.6 1.133
-04.0 86 44.16 3376 1898 45061 9275 96.5 1.101 ! Near Maximum !
-02.0 87 45.08 3445 1976 48064 9446 97.3 1.070 ! Near Maximum !
+00.0 89 46.00 3514 2056 51274 9602 98.0 1.040 ! Near Maximum !
+02.0 91 46.92 3582 2137 54713 9743 98.6 1.011 !DANGEROUS LOAD-DO NOT USE!
+04.0 93 47.84 3650 2219 58400 9868 99.0 0.983 !DANGEROUS LOAD-DO NOT USE!
+06.0 95 48.76 3718 2302 62347 9976 99.4 0.955 !DANGEROUS LOAD-DO NOT USE!
+08.0 96 49.68 3785 2386 66545 10067 99.7 0.929 !DANGEROUS LOAD-DO NOT USE!
+10.0 98 50.60 3852 2471 71031 10140 99.9 0.904 !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 89 46.00 3685 2262 61762 9447 100.0 0.962 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 89 46.00 3284 1797 41698 9234 91.5 1.140
Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 85, Nosler BalTip 43004
Useable Case Capaci: 48.487 grain H2O = 3.148 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 25.0 inch = 635.0 mm
Powder : Hodgdon CFE223
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 71 35.20 2703 1379 27867 7534 89.8 1.420
-18.0 72 36.08 2768 1446 29682 7772 91.1 1.384
-16.0 74 36.96 2833 1515 31614 8003 92.3 1.350
-14.0 76 37.84 2898 1585 33674 8225 93.4 1.316
-12.0 78 38.72 2964 1658 35868 8438 94.5 1.283
-10.0 80 39.60 3029 1731 38206 8640 95.5 1.248
-08.0 81 40.48 3093 1806 40701 8831 96.3 1.213
-06.0 83 41.36 3158 1882 43359 9009 97.1 1.178
-04.0 85 42.24 3222 1960 46205 9175 97.8 1.145 ! Near Maximum !
-02.0 87 43.12 3287 2039 49241 9327 98.4 1.113 ! Near Maximum !
+00.0 88 44.00 3350 2118 52486 9465 98.9 1.082 !DANGEROUS LOAD-DO NOT USE!
+02.0 90 44.88 3414 2199 55950 9587 99.3 1.053 !DANGEROUS LOAD-DO NOT USE!
+04.0 92 45.76 3476 2281 59622 9694 99.6 1.024 !DANGEROUS LOAD-DO NOT USE!
+06.0 94 46.64 3539 2363 63526 9784 99.9 0.996 !DANGEROUS LOAD-DO NOT USE!
+08.0 95 47.52 3600 2447 67697 9857 100.0 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 48.40 3662 2531 72154 9913 100.0 0.944 !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 88 44.00 3500 2312 62982 9198 100.0 1.004 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 88 44.00 3144 1865 42622 9235 93.4 1.185
- Nov 4, 2004
- 25,162
- 8,417
Those are some impressive speeds for the little case.
JD338
JD338
