Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 190gr | Berger VLD Hunting bullet and 51 powders. The key underlying parameters are shown in the table above.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 55,056 psi | 86% | 2946 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 50,314 psi | 79% | 2979 fps | 97.5% |
| Accurate High Country | <<locked>> | 82% | 56,927 psi | 89% | 3114 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 54,070 psi | 85% | 3058 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 55,898 psi | 88% | 3035 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,665 psi | 86% | 3054 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 54,070 psi | 85% | 3038 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 54,404 psi | 85% | 3166 fps | 99% |
| ADI AR 2225 | <<locked>> | 96% | 57,450 psi | 90% | 3120 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,550 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,245 psi | 87% | 3048 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,246 psi | 90% | 3005 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,302 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 56,579 psi | 89% | 3143 fps | 99% |
| Alliant Reloder-50 | <<locked>> | 98% | 56,710 psi | 89% | 3136 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 54,911 psi | 86% | 3012 fps | 98.9% |
| Bofors RP15 | <<locked>> | 86% | 54,810 psi | 86% | 3041 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,244 psi | 85% | 3054 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 55,245 psi | 87% | 3048 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,492 psi | 87% | 3058 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,116 psi | 90% | 3041 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,115 psi | 88% | 3025 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 53,824 psi | 84% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,985 psi | 60% | 1955 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,232 psi | 90% | 3015 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 86% | 57,087 psi | 89% | 3100 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 55,883 psi | 88% | 2969 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 56,420 psi | 88% | 3107 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 57,072 psi | 89% | 2976 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,085 psi | 85% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,317 psi | 87% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,679 psi | 86% | 3061 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 57,203 psi | 90% | 3048 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,986 psi | 61% | 2001 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 54,418 psi | 85% | 3107 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 53,679 psi | 84% | 3077 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 56,188 psi | 88% | 3002 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 55,448 psi | 87% | 3018 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2989 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,085 psi | 86% | 3015 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,435 psi | 90% | 2992 fps | 99.9% |
| Somchem S385 | <<locked>> | 82% | 55,709 psi | 87% | 2986 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,724 psi | 87% | 2972 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,027 psi | 86% | 3002 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 55,405 psi | 87% | 2979 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,679 psi | 86% | 3068 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 56,115 psi | 88% | 3068 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 54,186 psi | 85% | 3081 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 55,666 psi | 87% | 3150 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,288 psi | 85% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,332 psi | 87% | 2982 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 48,124 psi | 75% | 2835 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 43,482 psi | 68% | 2848 fps | 95.6% |
| Accurate High Country | <<locked>> | 80% | 53,171 psi | 83% | 3048 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 50,488 psi | 79% | 2995 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 52,315 psi | 82% | 2976 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 47,543 psi | 75% | 2927 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 35,592 psi | 56% | 2664 fps | 97.1% |
| ADI AR 2218 | <<locked>> | 90% | 43,598 psi | 68% | 2940 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 32,851 psi | 51% | 2635 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,953 psi | 81% | 2966 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,298 psi | 76% | 2927 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,065 psi | 74% | 2848 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,292 psi | 65% | 2805 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 41,872 psi | 66% | 2858 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 90% | 42,018 psi | 66% | 2851 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,179 psi | 71% | 2831 fps | 96.9% |
| Bofors RP15 | <<locked>> | 80% | 45,020 psi | 71% | 2861 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 38,493 psi | 60% | 2743 fps | 98% |
| Bofors RP5 | <<locked>> | 80% | 48,298 psi | 76% | 2927 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 38,711 psi | 61% | 2743 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 80% | 49,908 psi | 78% | 2920 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,037 psi | 77% | 2904 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 80% | 40,306 psi | 63% | 2864 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,543 psi | 45% | 1752 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,459 psi | 79% | 2904 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 46,340 psi | 73% | 2910 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 52,417 psi | 82% | 2910 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 82% | 32,706 psi | 51% | 2612 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 41,582 psi | 65% | 2713 fps | 100% |
| Norma 217 | <<locked>> | 80% | 30,864 psi | 48% | 2579 fps | 97.2% |
| Norma MRP | <<locked>> | 80% | 51,605 psi | 81% | 2999 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,992 psi | 74% | 2930 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 42,482 psi | 67% | 2795 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,370 psi | 46% | 1795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,885 psi | 63% | 2838 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 36,767 psi | 58% | 2726 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 52,678 psi | 83% | 2946 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 51,880 psi | 81% | 2959 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 45,643 psi | 72% | 2864 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,561 psi | 81% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 53,867 psi | 84% | 2936 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 52,098 psi | 82% | 2927 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,716 psi | 72% | 2805 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 45,063 psi | 71% | 2815 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 51,909 psi | 81% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,024 psi | 80% | 3002 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 42,815 psi | 67% | 2818 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 37,840 psi | 59% | 2746 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 84% | 41,698 psi | 65% | 2871 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,862 psi | 73% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,298 psi | 76% | 2861 fps | 99.9% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 57 powders for .30-378 Weath. Mag. loaded with the .308 | 190gr | Berger VLD Hunting. ADI AR 2218 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,955 fps to 3,166 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. As outliers, Hodgdon US 869, Ramshot LRT, Vihtavuori 20N29 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.