Load Specifications
Load data in caliber .30-378 Weath. Mag. with .310 | 215gr | Rhino Solid Shank 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.
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>> | 82% | 56,014 psi | 88% | 2799 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2930 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 82% | 55,550 psi | 87% | 2907 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 55,521 psi | 87% | 2900 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 56,144 psi | 88% | 3041 fps | 99.8% |
| ADI AR 2225 | <<locked>> | 92% | 55,724 psi | 87% | 2927 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,188 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 54,839 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 55,869 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 54,215 psi | 85% | 2949 fps | 99.4% |
| Alliant Reloder-50 | <<locked>> | 94% | 54,679 psi | 86% | 2949 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,448 psi | 87% | 2871 fps | 99.6% |
| Bofors RP15 | <<locked>> | 84% | 55,927 psi | 88% | 2894 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 55,724 psi | 87% | 2913 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,188 psi | 88% | 2897 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 56,768 psi | 89% | 2913 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 57,711 psi | 90% | 2894 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,695 psi | 89% | 2877 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 55,854 psi | 88% | 2982 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,305 psi | 60% | 1850 fps | 100% |
| Hodgdon US 869 | <<locked>> | 98% | 56,826 psi | 89% | 2930 fps | 96.4% |
| IMR 4955 Enduron | <<locked>> | 82% | 57,638 psi | 90% | 2867 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 54,389 psi | 85% | 2894 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,246 psi | 88% | 2831 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 54,723 psi | 86% | 2917 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 53,969 psi | 85% | 2831 fps | 96.2% |
| Lovex S071 | <<locked>> | 86% | 54,708 psi | 86% | 2782 fps | 100% |
| Norma 217 | <<locked>> | 94% | 56,246 psi | 88% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 55,912 psi | 88% | 2917 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 55,724 psi | 87% | 2969 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 84% | 54,288 psi | 85% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,363 psi | 62% | 1893 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 56,347 psi | 88% | 2963 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 55,288 psi | 87% | 2943 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 53,969 psi | 85% | 2831 fps | 96.2% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 54,012 psi | 85% | 2874 fps | 98.8% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 2848 fps | 97.1% |
| Vihtavuori 24N41 | <<locked>> | 96% | 57,522 psi | 90% | 2940 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 84% | 56,594 psi | 89% | 2825 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 55,956 psi | 88% | 2871 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 86% | 57,450 psi | 90% | 2927 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 55,622 psi | 87% | 2946 fps | 100% |
| Vihtavuori N570 | <<locked>> | 90% | 57,392 psi | 90% | 3018 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 56,362 psi | 88% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 55,999 psi | 88% | 2831 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% | 52,272 psi | 82% | 2746 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 39,015 psi | 61% | 2612 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 80% | 51,938 psi | 81% | 2848 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,204 psi | 61% | 2612 fps | 99.2% |
| ADI AR 2218 | 98.9 gr | 84% | 38,812 psi | 61% | 2690 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 36,506 psi | 57% | 2589 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,649 psi | 83% | 2844 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,343 psi | 80% | 2749 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,614 psi | 71% | 2723 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 80% | 37,434 psi | 59% | 2615 fps | 95.4% |
| Alliant Reloder-50 | 100.4 gr | 84% | 37,898 psi | 59% | 2618 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 48,675 psi | 76% | 2756 fps | 98.8% |
| Bofors RP15 | <<locked>> | 80% | 49,081 psi | 77% | 2785 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 42,525 psi | 67% | 2684 fps | 99.6% |
| Bofors RP5 | <<locked>> | 80% | 52,649 psi | 83% | 2844 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,714 psi | 67% | 2680 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 54,056 psi | 85% | 2838 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,069 psi | 83% | 2822 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 44,991 psi | 71% | 2805 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,776 psi | 45% | 1654 fps | 100% |
| Hodgdon US 869 | <<locked>> | 96% | 52,939 psi | 83% | 2867 fps | 95.4% |
| IMR 4955 Enduron | <<locked>> | 80% | 54,143 psi | 85% | 2812 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 50,792 psi | 80% | 2835 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 46,499 psi | 73% | 2661 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 80% | 34,084 psi | 53% | 2513 fps | 97.7% |
| Lovex D100 | <<locked>> | 88% | 50,270 psi | 79% | 2769 fps | 95.2% |
| Lovex S071 | <<locked>> | 80% | 45,237 psi | 71% | 2631 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,795 psi | 55% | 2539 fps | 99.4% |
| Ramshot Grand | <<locked>> | 80% | 51,982 psi | 81% | 2858 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 51,793 psi | 81% | 2900 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 80% | 46,833 psi | 73% | 2726 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,660 psi | 46% | 1693 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 44,904 psi | 70% | 2782 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,075 psi | 64% | 2684 fps | 98.5% |
| Shooters World 50 BMG | <<locked>> | 88% | 50,270 psi | 79% | 2769 fps | 95.2% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 41,220 psi | 65% | 2638 fps | 95.9% |
| Vihtavuori 20N29 | <<locked>> | 96% | 44,309 psi | 69% | 2720 fps | 95.1% |
| Vihtavuori 24N41 | <<locked>> | 94% | 53,635 psi | 84% | 2877 fps | 95.5% |
| Vihtavuori N165 | <<locked>> | 80% | 49,588 psi | 78% | 2720 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 42,859 psi | 67% | 2631 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 80% | 46,862 psi | 73% | 2753 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 80% | 42,061 psi | 66% | 2700 fps | 98.4% |
| Vihtavuori N570 | 92.3 gr | 80% | 40,205 psi | 63% | 2690 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,344 psi | 82% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,402 psi | 82% | 2779 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 45 powders for .30-378 Weath. Mag. loaded with the .310 | 215gr | Rhino Solid Shank. ADI AR 2218 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,041 fps. Accurate 8700 gives the best case fill at 100 %, and 45 of the 45 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 215.0 gr projectile in 0.31" calls for a 1:12.5 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. ADI AR 2218, Vihtavuori N570, Alliant Reloder-50 rank at the top here: for .30-378 Weath. Mag. with the .310 | 215gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.