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Joined: Oct 2004
Posts: 26,429
Campfire Ranger
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OP
Campfire Ranger
Joined: Oct 2004
Posts: 26,429 |
Here's the 6.5 Creedmoor. Again, with how close to the lands you are I increased the shot start initiation pressure to be "touching the lands" (i.e. add 7,200 PSI). Looks like 41.5g is recommended max for 2,787 FPS. This is still about 2g higher than what's recommended by Hodgdon. USE THIS DATA AT YOUR OWN RISK.
Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 46.579 grain H2O = 3.024 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.22% 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
-12.2 86 36.00 2457 1743 44011 7956 94.1 1.312
-11.0 87 36.50 2487 1786 45342 8071 94.6 1.296
-09.8 88 37.00 2517 1829 46713 8185 95.0 1.280
-08.5 89 37.50 2547 1873 48127 8296 95.4 1.265
-07.3 90 38.00 2577 1918 49585 8404 95.9 1.249
-06.1 92 38.50 2607 1962 51089 8511 96.2 1.234
-04.9 93 39.00 2637 2008 52640 8614 96.6 1.219
-03.7 94 39.50 2667 2054 54241 8715 97.0 1.205 ! Near Maximum !
-02.4 95 40.00 2697 2100 55897 8813 97.3 1.190 ! Near Maximum !
-01.2 96 40.50 2727 2147 57616 8908 97.6 1.176 ! Near Maximum !
+00.0 98 41.00 2757 2194 59399 9000 97.9 1.161 ! Near Maximum !
+01.2 99 41.50 2787 2242 61250 9089 98.2 1.147 ! Near Maximum !
+02.4 100 42.00 2817 2290 63172 9174 98.5 1.134 !DANGEROUS LOAD-DO NOT USE!
+03.7 101 42.50 2846 2339 65167 9256 98.7 1.120 !DANGEROUS LOAD-DO NOT USE!
+04.9 102 43.00 2876 2388 67238 9334 99.0 1.107 !DANGEROUS LOAD-DO NOT USE!
+06.1 104 43.50 2906 2437 69389 9408 99.2 1.093 !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 41.00 2818 2292 63605 8985 99.4 1.132 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 98 41.00 2688 2085 55210 8919 95.7 1.194 ! Near Maximum !
Thank you very much!
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