QL load data 280 Remington
- Thread starter Wis65x55
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 38,273
- 8,505
Code:
Cartridge : .280 Rem.
Bullet : .284, 131, Hammer HeavyH
Useable Case Capaci: 61.467 grain H2O = 3.991 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Vihtavuori N550 *C*T
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 51.12 2747 2195 41222 11301 96.1 1.229
-09.0 89 51.69 2778 2245 42639 11431 96.5 1.210
-08.0 90 52.26 2810 2296 44100 11557 96.9 1.191
-07.0 91 52.82 2841 2348 45608 11679 97.3 1.173
-06.0 92 53.39 2872 2399 47164 11796 97.7 1.155
-05.0 93 53.96 2903 2452 48771 11909 98.0 1.137
-04.0 94 54.53 2934 2505 50429 12017 98.3 1.119 ! Near Maximum !
-03.0 95 55.10 2965 2558 52141 12120 98.6 1.103 ! Near Maximum !
-02.0 96 55.66 2996 2612 53908 12218 98.9 1.086 ! Near Maximum !
-01.0 97 56.23 3027 2666 55734 12311 99.1 1.069 ! Near Maximum !
+00.0 98 56.80 3058 2720 57619 12399 99.3 1.053 ! Near Maximum !
+01.0 99 57.37 3089 2775 59567 12481 99.5 1.038 !DANGEROUS LOAD-DO NOT USE!
+02.0 100 57.94 3119 2830 61579 12558 99.6 1.022 !DANGEROUS LOAD-DO NOT USE!
+03.0 101 58.50 3149 2885 63658 12630 99.8 1.007 !DANGEROUS LOAD-DO NOT USE!
+04.0 102 59.07 3180 2941 65808 12696 99.9 0.992 !DANGEROUS LOAD-DO NOT USE!
+05.0 103 59.64 3210 2997 68030 12756 99.9 0.978 !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 56.80 3133 2855 63443 12253 100.0 1.010 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 98 56.80 2969 2564 51859 12370 97.4 1.103 ! Near Maximum !- Thread starter
- #3
Does N-160 or N- 555 look any better?
