243 Quickload Request

[George Foster]

I was wondering if Dr. Mike could run Quickload for me. Thank You in advance.

243Win
75HP HP Sierra
Rem Case
2.685 COL
22" Barrel
Fed 210M Primer
Rem9-1/2 primer also
RL19 Powder

 

[DrMike]

Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 51.958 grain H2O = 3.374 cm³
Cartridge O.A.L. L6: 2.685 inch = 68.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-19 *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 44.55 2988 1487 42211 11086 90.4 1.162
-09.0 94 45.05 3023 1522 43667 11237 91.0 1.144
-08.0 95 45.54 3058 1558 45174 11386 91.7 1.126
-07.0 96 46.04 3093 1594 46739 11531 92.3 1.109
-06.0 97 46.53 3129 1630 48360 11672 92.9 1.092
-05.0 98 47.03 3164 1667 50039 11810 93.5 1.075
-04.0 99 47.52 3199 1704 51781 11943 94.1 1.058 ! Near Maximum !
-03.0 100 48.02 3234 1742 53587 12072 94.6 1.042 ! Near Maximum !
-02.0 101 48.51 3270 1780 55461 12197 95.1 1.026 ! Near Maximum !
-01.0 102 49.01 3305 1819 57405 12317 95.6 1.010 ! Near Maximum !
+00.0 103 49.50 3340 1858 59424 12433 96.1 0.995 ! Near Maximum !
+01.0 104 50.00 3376 1898 61519 12544 96.6 0.980 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 50.49 3411 1938 63691 12649 97.0 0.965 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 50.99 3446 1978 65935 12749 97.4 0.950 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 51.48 3481 2018 68256 12844 97.7 0.936 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 51.98 3517 2059 70665 12933 98.1 0.921 !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 49.50 3518 2061 71127 12519 99.7 0.919 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 49.50 3114 1614 48468 11731 88.6 1.091

 

[George Foster]

Thank You Dr. Mike once again for all you do!