QL request
- Thread starter JR3
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,173
- 5,632
Welcome aboard.
Here's a projection based on the parameters you provided.
Cartridge : .280 Rem.
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 58.194 grain H2O = 3.778 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-23
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 86 45.36 2294 1870 28895 8957 95.8 1.627
-18.0 89 46.49 2353 1968 30912 9204 96.8 1.582
-16.0 91 47.63 2412 2067 33081 9432 97.7 1.539
-14.0 93 48.76 2471 2169 35407 9641 98.5 1.497
-12.0 95 49.90 2530 2273 37917 9829 99.1 1.454
-10.0 97 51.03 2588 2379 40615 9995 99.5 1.408
-08.0 99 52.16 2646 2487 43526 10137 99.8 1.363
-06.0 102 53.30 2703 2596 46664 10254 100.0 1.320
-04.0 104 54.43 2760 2706 50052 10348 100.0 1.279 ! Near Maximum !
-02.0 106 55.57 2816 2818 53717 10436 100.0 1.239 ! Near Maximum !
+00.0 108 56.70 2872 2931 57684 10520 100.0 1.200 ! Near Maximum !
+02.0 110 57.83 2928 3045 61987 10600 100.0 1.163 !DANGEROUS LOAD-DO NOT USE!
+04.0 112 58.97 2983 3160 66656 10676 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 60.10 3037 3277 71706 10749 100.0 1.093 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 61.24 3092 3396 77165 10817 100.0 1.060 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 62.37 3146 3517 83088 10880 100.0 1.028 !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 108 56.70 2983 3162 71559 10097 100.0 1.107 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 56.70 2700 2590 45568 10897 98.5 1.325
Here's a projection based on the parameters you provided.
Cartridge : .280 Rem.
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 58.194 grain H2O = 3.778 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-23
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 86 45.36 2294 1870 28895 8957 95.8 1.627
-18.0 89 46.49 2353 1968 30912 9204 96.8 1.582
-16.0 91 47.63 2412 2067 33081 9432 97.7 1.539
-14.0 93 48.76 2471 2169 35407 9641 98.5 1.497
-12.0 95 49.90 2530 2273 37917 9829 99.1 1.454
-10.0 97 51.03 2588 2379 40615 9995 99.5 1.408
-08.0 99 52.16 2646 2487 43526 10137 99.8 1.363
-06.0 102 53.30 2703 2596 46664 10254 100.0 1.320
-04.0 104 54.43 2760 2706 50052 10348 100.0 1.279 ! Near Maximum !
-02.0 106 55.57 2816 2818 53717 10436 100.0 1.239 ! Near Maximum !
+00.0 108 56.70 2872 2931 57684 10520 100.0 1.200 ! Near Maximum !
+02.0 110 57.83 2928 3045 61987 10600 100.0 1.163 !DANGEROUS LOAD-DO NOT USE!
+04.0 112 58.97 2983 3160 66656 10676 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 60.10 3037 3277 71706 10749 100.0 1.093 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 61.24 3092 3396 77165 10817 100.0 1.060 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 62.37 3146 3517 83088 10880 100.0 1.028 !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 108 56.70 2983 3162 71559 10097 100.0 1.107 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 56.70 2700 2590 45568 10897 98.5 1.325
- Oct 30, 2004
- 24,184
- 2,823
which version do you own Mike?
- Thread starter
- #4
Thank you!
I had no data to go on so figured I'd back off my old R22 loads a bit, and started with 58gr. My chrony said 2960fps. I backed off to 57grs. I got a nice .446" group. No pressure signs either time. I didn't take my chrony to range with 57gr load, but used another one belonging to another guy. It said 2975fps! I was looking for 2900 or a little less. I don't know if one chronograph or the other is off, or what's up.
Thanks again.
FOTIS....I'm .280Rem from the campfire.
I had no data to go on so figured I'd back off my old R22 loads a bit, and started with 58gr. My chrony said 2960fps. I backed off to 57grs. I got a nice .446" group. No pressure signs either time. I didn't take my chrony to range with 57gr load, but used another one belonging to another guy. It said 2975fps! I was looking for 2900 or a little less. I don't know if one chronograph or the other is off, or what's up.
Thanks again.
FOTIS....I'm .280Rem from the campfire.
