Home Forums Reloading Big Game Rifles Good 338 Federal loads

Found this elsewhere, thought I'd pass it on. QL results. Looks like 45.5 is at the edge at about 60K.

Code:
Cartridge : .338 Federal
Bullet : .338, 210, Nosler PART SP 16337
Useable Case Capaci: 48.541 grain H2O = 3.152 cm³
Cartridge O.A.L. L6: 2.820 inch = 71.63 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 8208 XBR

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 81 36.24 2047 1954 31574 5634 92.0 1.472
-18.0 83 37.15 2095 2046 33606 5796 93.0 1.432
-16.0 85 38.05 2142 2139 35752 5953 93.9 1.394
-14.0 87 38.96 2189 2235 38035 6104 94.8 1.356
-12.0 89 39.86 2236 2332 40462 6249 95.6 1.318
-10.0 91 40.77 2283 2431 43043 6387 96.3 1.281
-08.0 93 41.68 2330 2532 45789 6519 97.0 1.246
-06.0 95 42.58 2377 2634 48712 6643 97.6 1.212
-04.0 97 43.49 2423 2738 51825 6759 98.1 1.180 ! Near Maximum !
-02.0 99 44.39 2469 2844 55143 6866 98.6 1.148 ! Near Maximum !
+00.0 101 45.30 2516 2951 58682 6965 99.0 1.118 ! Near Maximum !
+02.0 103 46.21 2561 3059 62459 7055 99.4 1.089 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 47.11 2607 3169 66495 7135 99.6 1.061 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 48.02 2652 3281 70812 7205 99.8 1.033 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 48.92 2698 3393 75435 7264 99.9 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 49.83 2743 3507 80392 7313 100.0 0.981 !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 101 45.30 2612 3181 69288 6732 100.0 1.047 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 45.30 2381 2643 48401 6886 94.3 1.212