Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 210gr | Nosler RDF bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Alliant Reloder-50.
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% | 54,201 psi | 85% | 2805 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2923 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 82% | 57,217 psi | 90% | 2979 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 57,696 psi | 90% | 2969 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,334 psi | 90% | 2959 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 53,911 psi | 84% | 3035 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 94% | 57,334 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,520 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,594 psi | 89% | 2858 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,667 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,985 psi | 88% | 3009 fps | 99.5% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,275 psi | 88% | 3009 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,522 psi | 90% | 2933 fps | 99.6% |
| Bofors RP15 | <<locked>> | 84% | 54,114 psi | 85% | 2900 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,551 psi | 90% | 2976 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,520 psi | 85% | 2907 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,781 psi | 86% | 2917 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 56,115 psi | 88% | 2897 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,129 psi | 86% | 2884 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,551 psi | 90% | 3045 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1860 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,043 psi | 88% | 2871 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 56,405 psi | 88% | 2956 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,781 psi | 86% | 2835 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,159 psi | 88% | 2972 fps | 100% |
| Lovex D100 | <<locked>> | 92% | 55,985 psi | 88% | 2890 fps | 96.3% |
| Lovex S071 | <<locked>> | 88% | 56,536 psi | 89% | 2838 fps | 100% |
| Norma 217 | <<locked>> | 94% | 54,143 psi | 85% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 53,882 psi | 84% | 2920 fps | 100% |
| Ramshot LRT | <<locked>> | 96% | 57,493 psi | 90% | 3028 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 86% | 56,347 psi | 88% | 2907 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,291 psi | 62% | 1909 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 54,012 psi | 85% | 2966 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,261 psi | 90% | 3009 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 55,985 psi | 88% | 2890 fps | 96.3% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2930 fps | 98.9% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 49,008 psi | 77% | 2838 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 84% | 54,882 psi | 86% | 2831 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,201 psi | 85% | 2871 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 82% | 57,711 psi | 90% | 2982 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 55,448 psi | 87% | 2927 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 57,624 psi | 90% | 3009 fps | 100% |
| Vihtavuori N570 | <<locked>> | 90% | 55,187 psi | 86% | 3015 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 54,041 psi | 85% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,462 psi | 85% | 2838 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 50,850 psi | 80% | 2756 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 40,248 psi | 63% | 2667 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 80% | 53,432 psi | 84% | 2920 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 50,299 psi | 79% | 2851 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 37,768 psi | 59% | 2608 fps | 98.7% |
| ADI AR 2218 | 97.6 gr | 84% | 37,362 psi | 59% | 2677 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 35,085 psi | 55% | 2585 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,024 psi | 80% | 2848 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,821 psi | 78% | 2759 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,961 psi | 69% | 2726 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 38,682 psi | 61% | 2674 fps | 95.6% |
| Alliant Reloder-50 | 101.4 gr | 86% | 39,001 psi | 61% | 2671 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,384 psi | 74% | 2759 fps | 98.3% |
| Bofors RP15 | <<locked>> | 80% | 47,543 psi | 75% | 2789 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 41,118 psi | 64% | 2684 fps | 99.3% |
| Bofors RP5 | <<locked>> | 80% | 51,024 psi | 80% | 2848 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 41,162 psi | 65% | 2680 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 80% | 52,518 psi | 82% | 2841 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,547 psi | 81% | 2825 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,178 psi | 68% | 2802 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,703 psi | 45% | 1667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,721 psi | 83% | 2818 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 80% | 49,110 psi | 77% | 2838 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 48,196 psi | 76% | 2720 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 80% | 32,779 psi | 51% | 2507 fps | 96.9% |
| Lovex D100 | <<locked>> | 90% | 52,098 psi | 82% | 2825 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 43,888 psi | 69% | 2638 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,272 psi | 52% | 2533 fps | 99% |
| Ramshot Grand | <<locked>> | 80% | 50,154 psi | 79% | 2858 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 53,577 psi | 84% | 2963 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 80% | 45,237 psi | 71% | 2730 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,573 psi | 46% | 1706 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,931 psi | 67% | 2779 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,378 psi | 62% | 2677 fps | 97.9% |
| Shooters World 50 BMG | <<locked>> | 90% | 52,098 psi | 82% | 2825 fps | 95.3% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 42,351 psi | 66% | 2687 fps | 95.9% |
| Vihtavuori 20N29 | <<locked>> | 98% | 45,600 psi | 71% | 2772 fps | 95.2% |
| Vihtavuori N165 | <<locked>> | 80% | 48,269 psi | 76% | 2726 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 41,452 psi | 65% | 2631 fps | 95% |
| Vihtavuori N560 | <<locked>> | 80% | 53,882 psi | 84% | 2923 fps | 100% |
| Vihtavuori N565 | <<locked>> | 80% | 45,339 psi | 71% | 2753 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 80% | 40,393 psi | 63% | 2694 fps | 97.7% |
| Vihtavuori N570 | 91 gr | 80% | 38,537 psi | 60% | 2680 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,256 psi | 79% | 2844 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,749 psi | 80% | 2782 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 48 powders for .30-378 Weath. Mag. loaded with the .308 | 210gr | Nosler RDF. Hodgdon Retumbo delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,045 fps. Accurate 8700 gives the best case fill at 100 %, and 48 of the 48 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 1:11.0 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. ADI AR 2218, Vihtavuori N570, Alliant Reloder-50 rank at the top here: for .30-378 Weath. Mag. with the .308 | 210gr | Nosler RDF they combine a high case fill with complete burn and sit in the upper velocity band. 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.