Load Specifications
Load data in caliber .30-378 Weath. Mag. with .307 | 110gr | Prvi Partizan FMJ RN bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Winchester StaBALL HD and IMR 7828 SSC.
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% | 55,738 psi | 87% | 3645 fps | 99.6% |
| Accurate 4350 | <<locked>> | 86% | 56,275 psi | 88% | 3704 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 57,261 psi | 90% | 3809 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 56,768 psi | 89% | 3678 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,392 psi | 90% | 3757 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 94% | 55,550 psi | 87% | 3743 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,918 psi | 70% | 3540 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,638 psi | 90% | 3747 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,101 psi | 89% | 3780 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,433 psi | 85% | 3724 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,913 psi | 89% | 3740 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,593 psi | 87% | 3740 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,768 psi | 89% | 3730 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,565 psi | 89% | 3783 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,461 psi | 84% | 3747 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 54,636 psi | 86% | 3720 fps | 97.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 3688 fps | 96.9% |
| Bofors RP5 | <<locked>> | 94% | 55,593 psi | 87% | 3740 fps | 98.2% |
| Bofors RP7 | <<locked>> | 84% | 54,752 psi | 86% | 3638 fps | 98.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3720 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 54,186 psi | 85% | 3691 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,695 psi | 89% | 3714 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 92% | 55,274 psi | 87% | 3671 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,348 psi | 90% | 3681 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,405 psi | 87% | 3855 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 84% | 55,201 psi | 87% | 3720 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 2490 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,695 psi | 89% | 3681 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,304 psi | 88% | 3675 fps | 99.1% |
| IMR 4831 | <<locked>> | 88% | 56,739 psi | 89% | 3694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,115 psi | 88% | 3661 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 96% | 57,203 psi | 90% | 3793 fps | 97.4% |
| Lovex S065 | <<locked>> | 86% | 56,956 psi | 89% | 3671 fps | 99.8% |
| Lovex S070 | <<locked>> | 86% | 55,216 psi | 87% | 3658 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 3661 fps | 99.7% |
| Norma 204 | <<locked>> | 86% | 54,157 psi | 85% | 3668 fps | 97.5% |
| Norma MRP | <<locked>> | 92% | 55,477 psi | 87% | 3766 fps | 99.1% |
| Norma URP | <<locked>> | 86% | 54,607 psi | 86% | 3681 fps | 99.9% |
| Ramshot Grand | <<locked>> | 94% | 53,998 psi | 85% | 3730 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 88% | 57,580 psi | 90% | 3743 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 98% | 57,232 psi | 90% | 3727 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 59% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,579 psi | 89% | 3720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,027 psi | 86% | 3750 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3848 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 82% | 56,101 psi | 88% | 3661 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,795 psi | 86% | 3648 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 92% | 56,391 psi | 88% | 3727 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,752 psi | 86% | 3638 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,956 psi | 89% | 3671 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 55,216 psi | 87% | 3658 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,696 psi | 90% | 3724 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,709 psi | 87% | 3524 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,434 psi | 88% | 3609 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,941 psi | 88% | 3717 fps | 98.2% |
| Somchem S355 | <<locked>> | 82% | 55,608 psi | 87% | 3655 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,956 psi | 89% | 3629 fps | 96.6% |
| Somchem S365 | <<locked>> | 88% | 55,201 psi | 87% | 3688 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,145 psi | 90% | 3694 fps | 99% |
| Vihtavuori N150 | <<locked>> | 84% | 57,145 psi | 90% | 3619 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,434 psi | 88% | 3678 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,855 psi | 89% | 3661 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,854 psi | 88% | 3678 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,955 psi | 86% | 3698 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,230 psi | 87% | 3750 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 98% | 55,651 psi | 87% | 3720 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,579 psi | 89% | 3619 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,331 psi | 85% | 3694 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,013 psi | 86% | 3809 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,464 psi | 90% | 3684 fps | 98.4% |
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% | 36,376 psi | 57% | 3209 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 45,484 psi | 71% | 3488 fps | 99.1% |
| Accurate High Country | <<locked>> | 88% | 49,458 psi | 78% | 3648 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 53,214 psi | 83% | 3612 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 46,601 psi | 73% | 3530 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 51,677 psi | 81% | 3665 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 39,015 psi | 61% | 3376 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 47,065 psi | 74% | 3527 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,265 psi | 68% | 3494 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,488 psi | 79% | 3652 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 46,557 psi | 73% | 3517 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 45,049 psi | 71% | 3510 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,358 psi | 51% | 3169 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 34,693 psi | 54% | 3251 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,853 psi | 56% | 3323 fps | 96.4% |
| Bofors RP15 | <<locked>> | 90% | 44,425 psi | 70% | 3494 fps | 95.1% |
| Bofors RP30 | <<locked>> | 98% | 48,936 psi | 77% | 3609 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 45,049 psi | 71% | 3510 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,037 psi | 75% | 3501 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 96% | 47,906 psi | 75% | 3556 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 47,137 psi | 74% | 3540 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,647 psi | 78% | 3570 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 90% | 51,517 psi | 81% | 3596 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,814 psi | 64% | 3353 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 94% | 44,831 psi | 70% | 3599 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 80% | 47,311 psi | 74% | 3556 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 43% | 2244 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,497 psi | 68% | 3396 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,385 psi | 77% | 3533 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 43,120 psi | 68% | 3415 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,663 psi | 83% | 3589 fps | 95.7% |
| IMR 7828 SSC | 108.4 gr | 92% | 49,588 psi | 78% | 3632 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,992 psi | 74% | 3471 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 45,310 psi | 71% | 3445 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 37,971 psi | 60% | 3251 fps | 95.8% |
| Norma 204 | <<locked>> | 82% | 46,934 psi | 74% | 3510 fps | 95.7% |
| Norma MRP | <<locked>> | 84% | 41,162 psi | 65% | 3442 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 44,454 psi | 70% | 3471 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 50,053 psi | 78% | 3645 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 43,555 psi | 68% | 3448 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 90% | 41,713 psi | 65% | 3399 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 44% | 2297 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,542 psi | 71% | 3501 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,918 psi | 69% | 3514 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 38,841 psi | 61% | 3402 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 52,330 psi | 82% | 3593 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 48,022 psi | 75% | 3507 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 45,803 psi | 72% | 3501 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,037 psi | 75% | 3501 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,992 psi | 74% | 3471 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 45,310 psi | 71% | 3445 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,911 psi | 84% | 3652 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,286 psi | 82% | 3465 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,224 psi | 72% | 3402 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 45,426 psi | 71% | 3491 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 52,069 psi | 82% | 3586 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 53,156 psi | 83% | 3556 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 41,379 psi | 65% | 3415 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 43,453 psi | 68% | 3402 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 49,922 psi | 78% | 3494 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,021 psi | 72% | 3471 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 43,134 psi | 68% | 3376 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,527 psi | 71% | 3468 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 36,289 psi | 57% | 3271 fps | 97.4% |
| Vihtavuori N560 | 110.2 gr | 90% | 51,416 psi | 81% | 3671 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 51,851 psi | 81% | 3642 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,513 psi | 71% | 3419 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,268 psi | 74% | 3540 fps | 97.5% |
| Winchester StaBALL HD | 96.9 gr | 80% | 28,921 psi | 45% | 3143 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 46,253 psi | 72% | 3455 fps | 95.8% |
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 70 powders for .30-378 Weath. Mag. loaded with the .307 | 110gr | Prvi Partizan FMJ RN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,855 fps; across all powders the maximum-charge window runs from 2,490 fps to 3,855 fps. ADI AR 2225 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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. Vihtavuori N560, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .30-378 Weath. Mag. with the .307 | 110gr | Prvi Partizan FMJ RN 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.