Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 110gr | Barnes TAC-TX bullet and 76 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>> | 96% | 57,145 psi | 90% | 3675 fps | 99.7% |
| Accurate 4350 | <<locked>> | 86% | 54,056 psi | 85% | 3671 fps | 99.9% |
| Accurate High Country | <<locked>> | 92% | 54,940 psi | 86% | 3770 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 55,129 psi | 86% | 3652 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,535 psi | 87% | 3724 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 96% | 57,667 psi | 90% | 3793 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,859 psi | 67% | 3484 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,767 psi | 87% | 3717 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,853 psi | 86% | 3701 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,463 psi | 88% | 3678 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,085 psi | 86% | 3750 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,550 psi | 89% | 3763 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,085 psi | 86% | 3704 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,479 psi | 90% | 3780 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,462 psi | 85% | 3694 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3750 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,317 psi | 87% | 3783 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,231 psi | 88% | 3753 fps | 98.1% |
| Bofors RP3 | <<locked>> | 82% | 57,493 psi | 90% | 3694 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 3642 fps | 96.2% |
| Bofors RP5 | <<locked>> | 96% | 57,479 psi | 90% | 3780 fps | 98.4% |
| Bofors RP7 | <<locked>> | 86% | 56,681 psi | 89% | 3681 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 3681 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 56,217 psi | 88% | 3734 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 84% | 55,042 psi | 86% | 3684 fps | 98% |
| Hodgdon H4831 | <<locked>> | 94% | 57,363 psi | 90% | 3717 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,159 psi | 88% | 3691 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,477 psi | 87% | 3655 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,142 psi | 83% | 3806 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 86% | 57,450 psi | 90% | 3766 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 57% | 2487 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,940 psi | 86% | 3652 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,737 psi | 86% | 3645 fps | 98.8% |
| IMR 4831 | <<locked>> | 88% | 54,621 psi | 86% | 3658 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,462 psi | 85% | 3629 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 96% | 55,100 psi | 86% | 3750 fps | 96.8% |
| Lovex S065 | <<locked>> | 86% | 55,201 psi | 87% | 3645 fps | 99.6% |
| Lovex S070 | <<locked>> | 88% | 57,043 psi | 89% | 3694 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3622 fps | 99.5% |
| Norma 204 | <<locked>> | 88% | 56,246 psi | 88% | 3711 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 57,522 psi | 90% | 3809 fps | 99.3% |
| Norma URP | <<locked>> | 88% | 56,478 psi | 89% | 3720 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,014 psi | 88% | 3770 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 88% | 55,608 psi | 87% | 3711 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 98% | 54,897 psi | 86% | 3691 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 2539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,493 psi | 90% | 3691 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,927 psi | 88% | 3760 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,433 psi | 85% | 3688 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,159 psi | 90% | 3793 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 3806 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 82% | 53,983 psi | 85% | 3625 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,739 psi | 89% | 3688 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 92% | 54,418 psi | 85% | 3691 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 86% | 56,681 psi | 89% | 3681 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,201 psi | 87% | 3645 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 57,043 psi | 89% | 3694 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,927 psi | 88% | 3694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,638 psi | 90% | 3556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,694 psi | 86% | 3579 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,983 psi | 85% | 3681 fps | 97.8% |
| Somchem S355 | <<locked>> | 84% | 57,392 psi | 90% | 3688 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,056 psi | 86% | 3599 fps | 96.1% |
| Somchem S365 | <<locked>> | 90% | 56,898 psi | 89% | 3720 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,100 psi | 86% | 3658 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 55,288 psi | 87% | 3593 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,578 psi | 86% | 3648 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 96% | 54,781 psi | 86% | 3625 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 88% | 57,711 psi | 90% | 3714 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,478 psi | 89% | 3730 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,290 psi | 90% | 3796 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3753 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,636 psi | 86% | 3593 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,420 psi | 88% | 3737 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,840 psi | 89% | 3845 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,361 psi | 87% | 3648 fps | 98% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 36,956 psi | 58% | 3228 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 43,323 psi | 68% | 3442 fps | 98.7% |
| Accurate High Country | <<locked>> | 90% | 51,024 psi | 80% | 3684 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 51,735 psi | 81% | 3589 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 44,947 psi | 70% | 3494 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 49,850 psi | 78% | 3625 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 39,987 psi | 63% | 3402 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 45,382 psi | 71% | 3491 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 47,703 psi | 75% | 3550 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,794 psi | 83% | 3612 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,655 psi | 65% | 3455 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,573 psi | 76% | 3615 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 44,904 psi | 70% | 3481 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 46,253 psi | 72% | 3543 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,719 psi | 48% | 3120 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 35,476 psi | 56% | 3284 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,939 psi | 53% | 3264 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 45,730 psi | 72% | 3527 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 53,679 psi | 84% | 3629 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 46,688 psi | 73% | 3563 fps | 95.1% |
| Bofors RP5 | <<locked>> | 90% | 46,253 psi | 72% | 3543 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 46,470 psi | 73% | 3465 fps | 96.8% |
| Hodgdon H1000 | <<locked>> | 96% | 46,006 psi | 72% | 3517 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 45,397 psi | 71% | 3504 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 48,008 psi | 75% | 3537 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 92% | 53,461 psi | 84% | 3638 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,315 psi | 82% | 3615 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,160 psi | 61% | 3317 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,801 psi | 67% | 3543 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 45,397 psi | 71% | 3517 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 43% | 2241 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,047 psi | 66% | 3366 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,993 psi | 75% | 3507 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 41,350 psi | 65% | 3376 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,981 psi | 80% | 3560 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 51,242 psi | 80% | 3668 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 45,324 psi | 71% | 3438 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 43,642 psi | 68% | 3412 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 38,522 psi | 60% | 3271 fps | 96% |
| Norma 204 | <<locked>> | 82% | 45,266 psi | 71% | 3474 fps | 95.1% |
| Norma MRP | <<locked>> | 86% | 42,409 psi | 66% | 3481 fps | 96% |
| Norma URP | <<locked>> | 80% | 42,772 psi | 67% | 3435 fps | 98.5% |
| Ramshot Grand | <<locked>> | 92% | 47,935 psi | 75% | 3599 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,829 psi | 66% | 3409 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 92% | 42,989 psi | 67% | 3435 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 43% | 2290 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,722 psi | 84% | 3622 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,648 psi | 81% | 3684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,569 psi | 68% | 3458 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,061 psi | 66% | 3471 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 39,900 psi | 63% | 3438 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 50,386 psi | 79% | 3560 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,530 psi | 78% | 3543 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 44,005 psi | 69% | 3461 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 46,470 psi | 73% | 3465 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,324 psi | 71% | 3438 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 80% | 43,642 psi | 68% | 3412 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,141 psi | 82% | 3625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,633 psi | 79% | 3442 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,498 psi | 70% | 3363 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 46,847 psi | 73% | 3530 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 50,328 psi | 79% | 3560 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,271 psi | 80% | 3520 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 39,537 psi | 62% | 3373 fps | 99.8% |
| Somchem S385 | <<locked>> | 84% | 41,611 psi | 65% | 3363 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 48,269 psi | 76% | 3465 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,222 psi | 69% | 3432 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 44,469 psi | 70% | 3412 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 43,729 psi | 69% | 3428 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 34,389 psi | 54% | 3219 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 92% | 53,084 psi | 83% | 3711 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 49,530 psi | 78% | 3596 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,903 psi | 69% | 3386 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 45,513 psi | 71% | 3504 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,253 psi | 43% | 3071 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,411 psi | 70% | 3419 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 76 powders for .30-378 Weath. Mag. loaded with the .308 | 110gr | Barnes TAC-TX. Winchester StaBALL HD delivers the highest muzzle velocity at 3,845 fps; across all powders the maximum-charge window runs from 2,487 fps to 3,845 fps. ADI AR 2225 gives the best case fill at 100 %, and 76 of the 76 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 1:11.5 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.