Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 110gr | Winchester Hollow Point bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, ADI AR 2213 and Alliant Reloder-26.
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% | 55,666 psi | 87% | 3645 fps | 99.6% |
| Accurate 4350 | <<locked>> | 86% | 56,246 psi | 88% | 3704 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 56,724 psi | 89% | 3678 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,363 psi | 90% | 3757 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 94% | 55,463 psi | 87% | 3743 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,773 psi | 70% | 3533 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,855 psi | 89% | 3776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,389 psi | 85% | 3724 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,898 psi | 89% | 3740 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,564 psi | 87% | 3743 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,753 psi | 89% | 3727 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,550 psi | 89% | 3786 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,432 psi | 84% | 3743 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 54,578 psi | 86% | 3720 fps | 97.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,489 psi | 82% | 3688 fps | 96.9% |
| Bofors RP5 | <<locked>> | 94% | 55,564 psi | 87% | 3743 fps | 98.2% |
| Bofors RP7 | <<locked>> | 84% | 54,708 psi | 86% | 3638 fps | 98.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3717 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 84% | 54,157 psi | 85% | 3688 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,666 psi | 89% | 3714 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 92% | 55,259 psi | 87% | 3671 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,319 psi | 90% | 3678 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,216 psi | 87% | 3852 fps | 99% |
| Hodgdon Superformance | <<locked>> | 84% | 55,013 psi | 86% | 3717 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 58% | 2490 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,666 psi | 89% | 3678 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,275 psi | 88% | 3671 fps | 99.1% |
| IMR 4831 | <<locked>> | 88% | 56,710 psi | 89% | 3694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,101 psi | 88% | 3661 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 96% | 57,159 psi | 90% | 3786 fps | 97.4% |
| Lovex S065 | <<locked>> | 86% | 56,927 psi | 89% | 3671 fps | 99.8% |
| Lovex S070 | <<locked>> | 86% | 55,187 psi | 86% | 3655 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3661 fps | 99.7% |
| Norma 204 | <<locked>> | 86% | 54,128 psi | 85% | 3665 fps | 97.5% |
| Norma MRP | <<locked>> | 92% | 55,463 psi | 87% | 3766 fps | 99.1% |
| Norma URP | <<locked>> | 86% | 54,563 psi | 86% | 3681 fps | 99.9% |
| Ramshot Grand | <<locked>> | 94% | 53,983 psi | 85% | 3727 fps | 97% |
| Ramshot Hunter | <<locked>> | 88% | 57,493 psi | 90% | 3743 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 98% | 57,159 psi | 90% | 3727 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,550 psi | 89% | 3720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,984 psi | 86% | 3750 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 3852 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 82% | 55,854 psi | 88% | 3655 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,766 psi | 86% | 3648 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 92% | 56,362 psi | 88% | 3727 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,708 psi | 86% | 3638 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,927 psi | 89% | 3671 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 55,187 psi | 86% | 3655 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,653 psi | 90% | 3720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,651 psi | 87% | 3524 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,391 psi | 88% | 3606 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,927 psi | 88% | 3717 fps | 98.2% |
| Somchem S355 | <<locked>> | 82% | 55,535 psi | 87% | 3652 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,768 psi | 89% | 3625 fps | 96.6% |
| Somchem S365 | <<locked>> | 88% | 55,172 psi | 86% | 3688 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,072 psi | 89% | 3691 fps | 99% |
| Vihtavuori N150 | <<locked>> | 84% | 57,043 psi | 89% | 3619 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,347 psi | 88% | 3678 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,840 psi | 89% | 3661 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,811 psi | 87% | 3678 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,926 psi | 86% | 3698 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,216 psi | 87% | 3753 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 98% | 55,579 psi | 87% | 3720 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,362 psi | 88% | 3615 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,288 psi | 85% | 3694 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,969 psi | 86% | 3809 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,392 psi | 90% | 3681 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% | 36,332 psi | 57% | 3209 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 45,295 psi | 71% | 3484 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 53,171 psi | 83% | 3612 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 46,528 psi | 73% | 3527 fps | 95.8% |
| ADI AR 2213 | 109 gr | 92% | 51,619 psi | 81% | 3665 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 39,015 psi | 61% | 3373 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,192 psi | 68% | 3491 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,444 psi | 79% | 3648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 46,528 psi | 73% | 3517 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 44,846 psi | 70% | 3507 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,300 psi | 51% | 3169 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 34,679 psi | 54% | 3251 fps | 95.1% |
| Alliant Reloder-26 | 100.8 gr | 80% | 35,824 psi | 56% | 3323 fps | 96.4% |
| Bofors RP15 | <<locked>> | 90% | 44,353 psi | 70% | 3494 fps | 95.1% |
| Bofors RP30 | <<locked>> | 98% | 48,791 psi | 76% | 3606 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 44,846 psi | 70% | 3507 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 47,993 psi | 75% | 3497 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 96% | 47,848 psi | 75% | 3556 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,108 psi | 74% | 3540 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,603 psi | 78% | 3570 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 90% | 51,430 psi | 81% | 3596 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,770 psi | 64% | 3350 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 94% | 44,759 psi | 70% | 3596 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 47,094 psi | 74% | 3550 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 2244 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,453 psi | 68% | 3399 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,356 psi | 77% | 3533 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 43,076 psi | 68% | 3415 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,591 psi | 82% | 3589 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 92% | 49,530 psi | 78% | 3632 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,949 psi | 74% | 3471 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 45,266 psi | 71% | 3445 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 37,942 psi | 59% | 3251 fps | 95.8% |
| Norma 204 | <<locked>> | 82% | 46,905 psi | 74% | 3510 fps | 95.7% |
| Norma MRP | <<locked>> | 84% | 41,104 psi | 64% | 3442 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 44,411 psi | 70% | 3471 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 50,009 psi | 78% | 3645 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 43,511 psi | 68% | 3448 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 90% | 41,655 psi | 65% | 3399 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 2297 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,455 psi | 71% | 3497 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,859 psi | 69% | 3514 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 38,827 psi | 61% | 3399 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 52,228 psi | 82% | 3593 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 51,242 psi | 80% | 3576 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 86% | 45,774 psi | 72% | 3497 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 47,993 psi | 75% | 3497 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,949 psi | 74% | 3471 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 45,266 psi | 71% | 3445 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,867 psi | 84% | 3652 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,243 psi | 82% | 3465 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,166 psi | 72% | 3399 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 45,382 psi | 71% | 3491 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 52,011 psi | 82% | 3586 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 53,113 psi | 83% | 3556 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 41,321 psi | 65% | 3412 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 43,395 psi | 68% | 3402 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 49,879 psi | 78% | 3494 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,818 psi | 72% | 3468 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 43,105 psi | 68% | 3376 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,484 psi | 71% | 3468 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 36,245 psi | 57% | 3271 fps | 97.3% |
| Vihtavuori N560 | 110.1 gr | 90% | 51,387 psi | 81% | 3671 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 51,779 psi | 81% | 3642 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,484 psi | 71% | 3415 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,224 psi | 74% | 3543 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,877 psi | 45% | 3140 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 46,224 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 68 powders for .30-378 Weath. Mag. loaded with the .308 | 110gr | Winchester Hollow Point. Hodgdon Retumbo delivers the highest muzzle velocity at 3,852 fps; across all powders the maximum-charge window runs from 2,490 fps to 3,852 fps. ADI AR 2225 gives the best case fill at 100 %, and 68 of the 68 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. The 110.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. 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, ADI AR 2213, Alliant Reloder-26 rank at the top here: for .30-378 Weath. Mag. with the .308 | 110gr | Winchester Hollow Point 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.