Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 115gr | AERO SOLR,- smax:11.70 bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Alliant Reloder-26 and Accurate High Country.
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>> | 94% | 55,506 psi | 87% | 3589 fps | 99.7% |
| Accurate 4350 | <<locked>> | 86% | 56,028 psi | 88% | 3648 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 57,363 psi | 90% | 3763 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 56,739 psi | 89% | 3622 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,609 psi | 90% | 3707 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 94% | 55,579 psi | 87% | 3701 fps | 97.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 3556 fps | 96.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,759 psi | 70% | 3491 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,027 psi | 85% | 3629 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,246 psi | 90% | 3724 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,505 psi | 85% | 3668 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,058 psi | 89% | 3688 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,564 psi | 87% | 3691 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,710 psi | 89% | 3675 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 3734 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,577 psi | 84% | 3691 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 54,737 psi | 86% | 3671 fps | 98.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,460 psi | 82% | 3638 fps | 97.3% |
| Bofors RP5 | <<locked>> | 94% | 55,564 psi | 87% | 3691 fps | 98.4% |
| Bofors RP7 | <<locked>> | 84% | 54,752 psi | 86% | 3586 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 3678 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 54,172 psi | 85% | 3635 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 84% | 56,884 psi | 89% | 3665 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 92% | 55,448 psi | 87% | 3625 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,288 psi | 85% | 3606 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,566 psi | 90% | 3629 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,535 psi | 87% | 3806 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 84% | 55,187 psi | 86% | 3671 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 57% | 2444 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,768 psi | 89% | 3632 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,318 psi | 88% | 3622 fps | 99.3% |
| IMR 4831 | <<locked>> | 88% | 56,637 psi | 89% | 3638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,217 psi | 88% | 3612 fps | 97% |
| IMR 7828 SSC | <<locked>> | 96% | 57,464 psi | 90% | 3743 fps | 97.8% |
| Lovex S065 | <<locked>> | 86% | 56,826 psi | 89% | 3619 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 55,042 psi | 86% | 3602 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3609 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 54,230 psi | 85% | 3619 fps | 97.9% |
| Norma MRP | <<locked>> | 92% | 55,637 psi | 87% | 3717 fps | 99.3% |
| Norma URP | <<locked>> | 86% | 54,520 psi | 85% | 3629 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,230 psi | 85% | 3688 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 88% | 57,638 psi | 90% | 3694 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 98% | 57,537 psi | 90% | 3684 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2500 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,565 psi | 89% | 3668 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,245 psi | 87% | 3701 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,261 psi | 90% | 3806 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 55,796 psi | 87% | 3599 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,824 psi | 86% | 3599 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 92% | 56,492 psi | 89% | 3675 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 84% | 54,752 psi | 86% | 3586 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,826 psi | 89% | 3619 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 55,042 psi | 86% | 3602 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,738 psi | 87% | 3468 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,275 psi | 88% | 3556 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,057 psi | 88% | 3668 fps | 98.5% |
| Somchem S355 | <<locked>> | 82% | 55,521 psi | 87% | 3596 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,855 psi | 89% | 3583 fps | 97% |
| Somchem S365 | <<locked>> | 88% | 55,201 psi | 87% | 3635 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,087 psi | 89% | 3642 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 56,985 psi | 89% | 3563 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,391 psi | 88% | 3622 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,985 psi | 89% | 3612 fps | 99% |
| Vihtavuori N550 | <<locked>> | 86% | 55,767 psi | 87% | 3622 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,824 psi | 86% | 3642 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,405 psi | 87% | 3704 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 98% | 55,535 psi | 87% | 3671 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,724 psi | 89% | 3570 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,317 psi | 85% | 3642 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,201 psi | 87% | 3753 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,566 psi | 90% | 3635 fps | 98.6% |
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>> | 82% | 35,911 psi | 56% | 3150 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 45,049 psi | 71% | 3428 fps | 99.3% |
| Accurate High Country | 107.1 gr | 88% | 49,443 psi | 77% | 3596 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 53,258 psi | 83% | 3560 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 43,526 psi | 68% | 3406 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 48,124 psi | 75% | 3537 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 98% | 46,630 psi | 73% | 3474 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 38,841 psi | 61% | 3330 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 43,874 psi | 69% | 3406 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,265 psi | 68% | 3445 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,647 psi | 79% | 3596 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 43,410 psi | 68% | 3396 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 44,918 psi | 70% | 3465 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,082 psi | 50% | 3117 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 34,505 psi | 54% | 3205 fps | 95.6% |
| Alliant Reloder-26 | 100.3 gr | 80% | 35,520 psi | 56% | 3264 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 44,309 psi | 69% | 3445 fps | 95.5% |
| Bofors RP30 | <<locked>> | 96% | 45,411 psi | 71% | 3484 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 44,918 psi | 70% | 3465 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 47,906 psi | 75% | 3448 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 94% | 44,512 psi | 70% | 3432 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 47,152 psi | 74% | 3491 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 49,545 psi | 78% | 3517 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 90% | 51,561 psi | 81% | 3550 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 50,459 psi | 79% | 3527 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,698 psi | 64% | 3301 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 92% | 41,626 psi | 65% | 3468 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 47,253 psi | 74% | 3504 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 43% | 2198 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,439 psi | 68% | 3350 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,414 psi | 77% | 3484 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 42,917 psi | 67% | 3363 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 88% | 49,327 psi | 77% | 3474 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 49,661 psi | 78% | 3583 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 46,804 psi | 73% | 3419 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 45,092 psi | 71% | 3392 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 35,027 psi | 55% | 3127 fps | 95% |
| Norma 204 | <<locked>> | 80% | 43,700 psi | 68% | 3386 fps | 95.1% |
| Norma MRP | <<locked>> | 84% | 40,988 psi | 64% | 3389 fps | 96% |
| Norma URP | <<locked>> | 80% | 44,353 psi | 70% | 3415 fps | 99.1% |
| Ramshot Grand | 108.6 gr | 90% | 46,311 psi | 73% | 3514 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 43,497 psi | 68% | 3402 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 90% | 41,582 psi | 65% | 3353 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 2251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,411 psi | 71% | 3448 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,830 psi | 69% | 3461 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 38,653 psi | 61% | 3356 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 52,098 psi | 82% | 3533 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 47,935 psi | 75% | 3458 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 42,540 psi | 67% | 3373 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,906 psi | 75% | 3448 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,804 psi | 73% | 3419 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,092 psi | 71% | 3392 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,112 psi | 82% | 3409 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,861 psi | 72% | 3346 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 45,440 psi | 71% | 3445 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 51,938 psi | 81% | 3533 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 49,516 psi | 78% | 3438 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 41,249 psi | 65% | 3360 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 40,292 psi | 63% | 3281 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 49,821 psi | 78% | 3438 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,788 psi | 72% | 3415 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 43,105 psi | 68% | 3330 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 45,266 psi | 71% | 3412 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 35,926 psi | 56% | 3212 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 90% | 51,387 psi | 81% | 3622 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 94% | 47,993 psi | 75% | 3510 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,440 psi | 71% | 3366 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,282 psi | 74% | 3491 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,558 psi | 45% | 3087 fps | 97% |
| Winchester Supreme 780 | <<locked>> | 86% | 42,873 psi | 67% | 3333 fps | 95.2% |
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 71 powders for .30-378 Weath. Mag. loaded with the .308 | 115gr | AERO SOLR,- smax:11.70. Hodgdon Retumbo delivers the highest muzzle velocity at 3,806 fps; across all powders the maximum-charge window runs from 2,444 fps to 3,806 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Ramshot Grand, Alliant Reloder-26, Accurate High Country rank at the top here: for .30-378 Weath. Mag. with the .308 | 115gr | AERO SOLR,- smax:11.70 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.