Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 210gr | Berger VLD Target bullet and 43 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 54,650 psi | 86% | 2812 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2930 fps | 99% |
| Accurate MAGPRO | <<locked>> | 82% | 57,522 psi | 90% | 2986 fps | 100% |
| ADI AR 2213 | <<locked>> | 82% | 54,128 psi | 85% | 2917 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 54,012 psi | 85% | 2910 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,259 psi | 85% | 3041 fps | 99.6% |
| ADI AR 2225 | <<locked>> | 92% | 53,925 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,795 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,913 psi | 89% | 2861 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 54,201 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,536 psi | 89% | 3015 fps | 99.5% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,811 psi | 89% | 3015 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 54,331 psi | 85% | 2884 fps | 99.4% |
| Bofors RP15 | <<locked>> | 84% | 54,549 psi | 85% | 2907 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 54,056 psi | 85% | 2920 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,795 psi | 86% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 55,201 psi | 87% | 2923 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 56,391 psi | 88% | 2904 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,390 psi | 87% | 2887 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 54,143 psi | 85% | 2989 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,218 psi | 60% | 1867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,434 psi | 88% | 2877 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 56,855 psi | 89% | 2963 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 55,114 psi | 86% | 2841 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,565 psi | 89% | 2976 fps | 100% |
| Lovex D100 | <<locked>> | 92% | 56,304 psi | 88% | 2894 fps | 96.4% |
| Lovex S071 | <<locked>> | 88% | 56,797 psi | 89% | 2841 fps | 100% |
| Norma 217 | <<locked>> | 94% | 54,592 psi | 86% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 54,346 psi | 85% | 2927 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,797 psi | 89% | 2910 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,276 psi | 62% | 1909 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 54,476 psi | 85% | 2972 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,696 psi | 90% | 3015 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 56,304 psi | 88% | 2894 fps | 96.4% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2936 fps | 98.9% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 49,443 psi | 77% | 2844 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 84% | 55,303 psi | 87% | 2835 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,534 psi | 85% | 2877 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 86% | 55,869 psi | 88% | 2933 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 54,128 psi | 85% | 2953 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 90% | 55,608 psi | 87% | 3022 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 54,534 psi | 85% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,679 psi | 86% | 2841 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 51,126 psi | 80% | 2759 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 40,553 psi | 64% | 2674 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 80% | 53,708 psi | 84% | 2923 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 50,560 psi | 79% | 2854 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 38,029 psi | 60% | 2612 fps | 98.8% |
| ADI AR 2218 | <<locked>> | 84% | 37,681 psi | 59% | 2687 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 35,317 psi | 55% | 2589 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,285 psi | 80% | 2851 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 50,125 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,280 psi | 69% | 2733 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 39,044 psi | 61% | 2680 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 86% | 39,334 psi | 62% | 2680 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,587 psi | 75% | 2762 fps | 98.4% |
| Bofors RP15 | <<locked>> | 80% | 47,819 psi | 75% | 2792 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 41,379 psi | 65% | 2690 fps | 99.3% |
| Bofors RP5 | <<locked>> | 80% | 51,285 psi | 80% | 2851 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 41,437 psi | 65% | 2687 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 52,765 psi | 83% | 2844 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,837 psi | 81% | 2831 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,482 psi | 68% | 2808 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,747 psi | 45% | 1670 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,968 psi | 83% | 2822 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 49,414 psi | 77% | 2841 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 48,530 psi | 76% | 2723 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 80% | 33,040 psi | 52% | 2513 fps | 97.1% |
| Lovex D100 | <<locked>> | 90% | 52,402 psi | 82% | 2831 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 44,193 psi | 69% | 2641 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,576 psi | 53% | 2539 fps | 99% |
| Ramshot Grand | <<locked>> | 80% | 50,473 psi | 79% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 45,498 psi | 71% | 2733 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,501 psi | 46% | 1706 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 43,207 psi | 68% | 2785 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,769 psi | 62% | 2687 fps | 98% |
| Shooters World 50 BMG | <<locked>> | 90% | 52,402 psi | 82% | 2831 fps | 95.5% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 39,900 psi | 63% | 2635 fps | 95.1% |
| Vihtavuori 20N29 | <<locked>> | 98% | 46,050 psi | 72% | 2782 fps | 95.4% |
| Vihtavuori N165 | <<locked>> | 80% | 48,515 psi | 76% | 2730 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 41,771 psi | 65% | 2635 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 80% | 45,614 psi | 71% | 2756 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 80% | 40,785 psi | 64% | 2700 fps | 97.8% |
| Vihtavuori N570 | <<locked>> | 80% | 38,914 psi | 61% | 2690 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,647 psi | 79% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 51,140 psi | 80% | 2789 fps | 100% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 47 powders for .30-378 Weath. Mag. loaded with the .308 | 210gr | Berger VLD Target. ADI AR 2218 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,041 fps. Accurate 8700 gives the best case fill at 100 %, and 47 of the 47 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 210.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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 50BMG 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.