.300 H&H Magnum and 4831SC powder

[Anonymous]

Gents,
Just wanted a sanity check for a starting point with a load for my .300 H&H and 4831 SC powder. Using a Nolser 180gr partion looks like I should be okay starting with 64 to 65 gr?
Thanks all.

 

[blacktailhunter]

The current Nosler manual shows 65.0gr to start with a maximum charge of 69.0gr.

 

[FOTIS]

Cartridge : .300 H.& H. Mag.
Bullet : .308, 180, Nosler PART SP 16331
Cartridge O.A.L. L6: 3.600 inch or 91.44 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Hodgdon H4831 SC

Predicted data by increasing and decreasing the given charge,
incremented in steps of 3.0% 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

-30.0 64 45.50 1851 1370 17739 6417 72.9 1.929
-27.0 67 47.45 1926 1483 19397 6864 75.2 1.863
-24.0 69 49.40 2002 1602 21208 7317 77.5 1.799
-21.0 72 51.35 2079 1728 23188 7772 79.7 1.737
-18.0 75 53.30 2158 1861 25352 8227 81.9 1.677
-15.0 78 55.25 2238 2001 27719 8678 84.0 1.620
-12.0 80 57.20 2318 2147 30311 9124 86.0 1.564
-09.0 83 59.15 2399 2301 33149 9560 87.9 1.510
-06.0 86 61.10 2481 2460 36260 9985 89.7 1.457
-03.0 89 63.05 2564 2627 39677 10394 91.3 1.396
+00.0 91 65.00 2647 2800 43432 10785 92.9 1.337
+03.0 94 66.95 2730 2979 47567 11155 94.3 1.282
+06.0 97 68.90 2814 3164 52129 11500 95.6 1.228
+09.0 100 70.85 2898 3356 57168 11817 96.7 1.177 ! Near Maximum !
+12.0 102 72.80 2982 3554 62747 12103 97.7 1.129 !DANGEROUS LOAD-DO NOT USE!
+15.0 105 74.75 3066 3757 68890 12354 98.5 1.083 !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 91 65.00 2800 3133 51969 11110 98.1 1.235
Data for burning rate decreased by 10% relative to nominal value:
-Ba 91 65.00 2459 2417 35736 9979 84.3 1.462