Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 130gr | AERO SOLR,- smax:12.90 bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Norma MRP.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,100 psi | 86% | 3435 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,521 psi | 87% | 3481 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,043 psi | 89% | 3606 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 90% | 54,143 psi | 85% | 3530 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 90% | 57,014 psi | 89% | 3547 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 92% | 55,114 psi | 86% | 3547 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 3494 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,037 psi | 75% | 3438 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,276 psi | 90% | 3543 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,782 psi | 89% | 3556 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,594 psi | 89% | 3530 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,259 psi | 87% | 3540 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,637 psi | 89% | 3514 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,623 psi | 89% | 3579 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,653 psi | 90% | 3609 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,782 psi | 89% | 3494 fps | 95.9% |
| Bofors RP15 | <<locked>> | 94% | 54,462 psi | 85% | 3520 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 3573 fps | 98.8% |
| Bofors RP5 | <<locked>> | 92% | 55,259 psi | 87% | 3540 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 57,493 psi | 90% | 3488 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 98% | 55,013 psi | 86% | 3527 fps | 99% |
| Hodgdon H414 | <<locked>> | 84% | 57,450 psi | 90% | 3543 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 56,130 psi | 88% | 3497 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 90% | 54,781 psi | 86% | 3474 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,508 psi | 90% | 3524 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,043 psi | 89% | 3461 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,579 psi | 87% | 3661 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 82% | 54,447 psi | 85% | 3507 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 58% | 2316 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,086 psi | 88% | 3468 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,419 psi | 87% | 3455 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 56,159 psi | 88% | 3474 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,506 psi | 87% | 3458 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 94% | 57,029 psi | 89% | 3589 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 56,072 psi | 88% | 3451 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,476 psi | 85% | 3442 fps | 99.7% |
| Lovex S071 | <<locked>> | 98% | 56,289 psi | 88% | 3455 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,363 psi | 90% | 3530 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 43,540 psi | 68% | 3337 fps | 98% |
| Norma MRP | <<locked>> | 90% | 55,332 psi | 87% | 3563 fps | 99.7% |
| Norma URP | <<locked>> | 84% | 54,143 psi | 85% | 3465 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,824 psi | 84% | 3533 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 56,985 psi | 89% | 3527 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,898 psi | 89% | 3530 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 59% | 2365 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,014 psi | 88% | 3504 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,694 psi | 86% | 3533 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,029 psi | 89% | 3655 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 3589 fps | 97.8% |
| Rottweil R 904 | <<locked>> | 88% | 54,244 psi | 85% | 3445 fps | 98% |
| Rottweil R 905 | <<locked>> | 90% | 56,043 psi | 88% | 3520 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 57,493 psi | 90% | 3488 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,072 psi | 88% | 3451 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,476 psi | 85% | 3442 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,361 psi | 87% | 3392 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,622 psi | 87% | 3514 fps | 99.1% |
| Somchem S361 | <<locked>> | 88% | 56,043 psi | 88% | 3428 fps | 97.8% |
| Somchem S365 | <<locked>> | 86% | 54,955 psi | 86% | 3468 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,507 psi | 89% | 3484 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 56,159 psi | 88% | 3389 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,767 psi | 87% | 3455 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,507 psi | 89% | 3461 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 84% | 55,085 psi | 86% | 3458 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,752 psi | 86% | 3484 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,027 psi | 86% | 3556 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 96% | 55,274 psi | 87% | 3527 fps | 98% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3593 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,695 psi | 87% | 3399 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,609 psi | 90% | 3547 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,680 psi | 87% | 3602 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,826 psi | 89% | 3481 fps | 99.2% |
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>> | 80% | 35,752 psi | 56% | 3015 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 48,066 psi | 75% | 3343 fps | 99.9% |
| Accurate High Country | <<locked>> | 84% | 45,701 psi | 72% | 3369 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 88% | 50,140 psi | 79% | 3451 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 40,089 psi | 63% | 3182 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 86% | 44,469 psi | 70% | 3314 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 43,120 psi | 68% | 3268 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 92% | 36,143 psi | 57% | 3127 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,509 psi | 63% | 3186 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,267 psi | 73% | 3356 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,147 psi | 63% | 3173 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 41,684 psi | 65% | 3245 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,621 psi | 54% | 3054 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,082 psi | 50% | 3005 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,624 psi | 61% | 3215 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,243 psi | 83% | 3422 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 41,249 psi | 65% | 3232 fps | 95.7% |
| Bofors RP30 | <<locked>> | 92% | 42,351 psi | 66% | 3274 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 41,684 psi | 65% | 3245 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 50,546 psi | 79% | 3356 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 90% | 41,133 psi | 64% | 3219 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 49,980 psi | 78% | 3406 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 52,344 psi | 82% | 3428 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 47,456 psi | 74% | 3323 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 46,586 psi | 73% | 3307 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,453 psi | 68% | 3215 fps | 100% |
| Hodgdon Retumbo | 101.2 gr | 88% | 38,711 psi | 61% | 3258 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 50,444 psi | 79% | 3428 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 2080 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,919 psi | 72% | 3264 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,054 psi | 82% | 3389 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 45,629 psi | 72% | 3278 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 45,600 psi | 71% | 3255 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 45,847 psi | 72% | 3360 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 49,400 psi | 77% | 3323 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 47,645 psi | 75% | 3307 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 32,706 psi | 51% | 2930 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 46,340 psi | 73% | 3310 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 37,565 psi | 59% | 3186 fps | 95.9% |
| Norma MRP | 95.5 gr | 80% | 37,927 psi | 59% | 3176 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 47,108 psi | 74% | 3327 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 42,656 psi | 67% | 3291 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 46,224 psi | 72% | 3320 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 38,305 psi | 60% | 3140 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 44% | 2126 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,457 psi | 76% | 3366 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,905 psi | 74% | 3386 fps | 99.8% |
| ReloadSwiss RS 76 | 105.9 gr | 86% | 35,636 psi | 56% | 3143 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 47,935 psi | 75% | 3422 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 82% | 44,309 psi | 69% | 3235 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 39,407 psi | 62% | 3156 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 50,546 psi | 79% | 3356 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,400 psi | 77% | 3323 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 47,645 psi | 75% | 3307 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,327 psi | 76% | 3258 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,073 psi | 61% | 3150 fps | 95% |
| Somchem S361 | <<locked>> | 82% | 45,527 psi | 71% | 3219 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 44,266 psi | 69% | 3274 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,958 psi | 63% | 3133 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 52,489 psi | 82% | 3327 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,602 psi | 76% | 3327 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 37,159 psi | 58% | 3048 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 48,022 psi | 75% | 3323 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 38,725 psi | 61% | 3150 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 47,529 psi | 74% | 3396 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 44,628 psi | 70% | 3301 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 48,747 psi | 76% | 3432 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,254 psi | 76% | 3271 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,111 psi | 79% | 3406 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,995 psi | 49% | 3058 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 82% | 39,523 psi | 62% | 3117 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 | 130gr | AERO SOLR,- smax:12.90. Hodgdon Retumbo delivers the highest muzzle velocity at 3,661 fps; across all powders the maximum-charge window runs from 2,316 fps to 3,661 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 58–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Hodgdon Retumbo, ReloadSwiss RS 76, Norma MRP rank at the top here: for .30-378 Weath. Mag. with the .308 | 130gr | AERO SOLR,- smax:12.90 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.