Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 110gr | Nosler Expansion Tip bullet and 73 powders. The key underlying parameters are shown in the table above.
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% | 53,780 psi | 84% | 3615 fps | 99.5% |
| Accurate 4350 | <<locked>> | 86% | 54,375 psi | 85% | 3678 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,535 psi | 87% | 3783 fps | 97.1% |
| Accurate MAGPRO | <<locked>> | 94% | 56,898 psi | 89% | 3780 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 82% | 55,593 psi | 87% | 3665 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,115 psi | 88% | 3737 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 94% | 54,056 psi | 85% | 3720 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,279 psi | 68% | 3501 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,535 psi | 87% | 3711 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,362 psi | 88% | 3734 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,753 psi | 89% | 3688 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,579 psi | 87% | 3757 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,029 psi | 89% | 3773 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,637 psi | 87% | 3717 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,969 psi | 85% | 3714 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,100 psi | 86% | 3707 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3760 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,941 psi | 88% | 3796 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,811 psi | 89% | 3770 fps | 98.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 3658 fps | 96.5% |
| Bofors RP5 | <<locked>> | 94% | 53,969 psi | 85% | 3714 fps | 97.9% |
| Bofors RP7 | <<locked>> | 86% | 57,072 psi | 89% | 3688 fps | 98.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3691 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 56,652 psi | 89% | 3743 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 84% | 55,477 psi | 87% | 3694 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,681 psi | 89% | 3704 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,941 psi | 88% | 3665 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3822 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 84% | 53,664 psi | 84% | 3698 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 57% | 2490 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,332 psi | 87% | 3661 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,013 psi | 86% | 3655 fps | 98.9% |
| IMR 4831 | <<locked>> | 88% | 55,071 psi | 86% | 3671 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,984 psi | 86% | 3645 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 96% | 55,651 psi | 87% | 3766 fps | 97.1% |
| Lovex S065 | <<locked>> | 86% | 55,608 psi | 87% | 3652 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 57,464 psi | 90% | 3704 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 3635 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 56,623 psi | 89% | 3720 fps | 98% |
| Norma MRP | <<locked>> | 92% | 53,809 psi | 84% | 3740 fps | 98.9% |
| Norma URP | <<locked>> | 88% | 56,927 psi | 89% | 3734 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,594 psi | 89% | 3789 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 88% | 56,028 psi | 88% | 3724 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 98% | 55,463 psi | 87% | 3704 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 58% | 2546 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,463 psi | 88% | 3766 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,027 psi | 86% | 3704 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,490 psi | 84% | 3727 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 3822 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 82% | 54,317 psi | 85% | 3635 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,130 psi | 90% | 3701 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 92% | 54,824 psi | 86% | 3701 fps | 98% |
| Rottweil R 907 | <<locked>> | 86% | 57,072 psi | 89% | 3688 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,608 psi | 87% | 3652 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 57,464 psi | 90% | 3704 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,376 psi | 88% | 3704 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,505 psi | 85% | 3507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,071 psi | 86% | 3589 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,375 psi | 85% | 3694 fps | 97.9% |
| Somchem S355 | <<locked>> | 82% | 54,128 psi | 85% | 3632 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,535 psi | 87% | 3609 fps | 96.3% |
| Somchem S365 | <<locked>> | 90% | 57,377 psi | 90% | 3730 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,477 psi | 87% | 3668 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,579 psi | 87% | 3599 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,882 psi | 86% | 3655 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,332 psi | 87% | 3638 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,259 psi | 85% | 3655 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 94% | 56,913 psi | 89% | 3737 fps | 100% |
| Vihtavuori N565 | <<locked>> | 98% | 53,824 psi | 84% | 3691 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,158 psi | 86% | 3602 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,840 psi | 89% | 3747 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,522 psi | 90% | 3858 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,912 psi | 88% | 3661 fps | 98.1% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 37,347 psi | 59% | 3241 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 43,642 psi | 68% | 3451 fps | 98.8% |
| Accurate High Country | <<locked>> | 88% | 47,921 psi | 75% | 3619 fps | 95% |
| Accurate MAGPRO | <<locked>> | 92% | 52,721 psi | 83% | 3694 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 52,025 psi | 82% | 3596 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 45,339 psi | 71% | 3504 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 92% | 50,241 psi | 79% | 3642 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 40,393 psi | 63% | 3422 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 45,165 psi | 71% | 3488 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 45,658 psi | 72% | 3501 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,113 psi | 83% | 3625 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,974 psi | 66% | 3468 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,066 psi | 77% | 3625 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 45,165 psi | 71% | 3491 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 46,789 psi | 73% | 3560 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,995 psi | 49% | 3133 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 35,795 psi | 56% | 3294 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,200 psi | 54% | 3274 fps | 95.6% |
| Bofors RP15 | <<locked>> | 92% | 46,122 psi | 72% | 3540 fps | 95.7% |
| Bofors RP30 | <<locked>> | 98% | 47,239 psi | 74% | 3579 fps | 95.4% |
| Bofors RP5 | <<locked>> | 90% | 46,789 psi | 73% | 3560 fps | 96.1% |
| Bofors RP7 | <<locked>> | 80% | 46,731 psi | 73% | 3474 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 96% | 46,456 psi | 73% | 3530 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,788 psi | 72% | 3514 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 48,399 psi | 76% | 3547 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,707 psi | 83% | 3629 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,450 psi | 62% | 3323 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 94% | 43,308 psi | 68% | 3563 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 45,788 psi | 72% | 3527 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 43% | 2244 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,322 psi | 66% | 3373 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,269 psi | 76% | 3514 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 41,640 psi | 65% | 3386 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 90% | 51,329 psi | 80% | 3570 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 51,808 psi | 81% | 3684 fps | 96.1% |
| Lovex S065 | <<locked>> | 80% | 45,629 psi | 72% | 3445 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 43,932 psi | 69% | 3422 fps | 96.9% |
| Lovex S071 | <<locked>> | 88% | 36,303 psi | 57% | 3212 fps | 95.2% |
| Norma 204 | <<locked>> | 82% | 45,672 psi | 72% | 3488 fps | 95.3% |
| Norma MRP | <<locked>> | 84% | 39,697 psi | 62% | 3409 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 43,062 psi | 67% | 3442 fps | 98.6% |
| Ramshot Grand | <<locked>> | 92% | 48,472 psi | 76% | 3615 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 42,206 psi | 66% | 3425 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 43,482 psi | 68% | 3448 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 44% | 2293 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,170 psi | 82% | 3694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,019 psi | 69% | 3471 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,453 psi | 67% | 3481 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 40,321 psi | 63% | 3451 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 50,720 psi | 79% | 3570 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,908 psi | 78% | 3556 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 44,411 psi | 70% | 3471 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 46,731 psi | 73% | 3474 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,629 psi | 72% | 3445 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 80% | 43,932 psi | 69% | 3422 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,591 psi | 82% | 3635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,082 psi | 80% | 3451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,744 psi | 70% | 3376 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 44,034 psi | 69% | 3468 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 50,647 psi | 79% | 3566 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,764 psi | 81% | 3537 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 39,885 psi | 63% | 3383 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 42,003 psi | 66% | 3373 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 48,544 psi | 76% | 3471 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,527 psi | 70% | 3445 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 88% | 41,814 psi | 66% | 3350 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 44,121 psi | 69% | 3442 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 34,693 psi | 54% | 3228 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 96% | 50,024 psi | 78% | 3612 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,121 psi | 69% | 3392 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,919 psi | 72% | 3517 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,557 psi | 43% | 3084 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,759 psi | 70% | 3428 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 73 powders for .30-378 Weath. Mag. loaded with the .308 | 110gr | Nosler Expansion Tip. Winchester StaBALL HD delivers the highest muzzle velocity at 3,858 fps; across all powders the maximum-charge window runs from 2,490 fps to 3,858 fps. ADI AR 2225 gives the best case fill at 100 %, and 73 of the 73 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 110.0 gr projectile in 0.308" calls for a 1:12.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.