Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 150gr | Sako Powerhead Blade bullet and 68 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 Vihtavuori N560.
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>> | 90% | 55,680 psi | 87% | 3268 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,028 psi | 88% | 3297 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 54,868 psi | 86% | 3373 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 88% | 57,450 psi | 90% | 3373 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 55,753 psi | 87% | 3379 fps | 99.1% |
| ADI AR 2217 | <<locked>> | 98% | 54,230 psi | 85% | 3343 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 3360 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 57,595 psi | 90% | 3369 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,435 psi | 90% | 3366 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,072 psi | 89% | 3360 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,043 psi | 88% | 3373 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,624 psi | 90% | 3337 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 53,940 psi | 85% | 3346 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,433 psi | 85% | 3366 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 3425 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,927 psi | 89% | 3333 fps | 97.3% |
| Bofors RP15 | <<locked>> | 92% | 55,230 psi | 87% | 3360 fps | 99.6% |
| Bofors RP30 | <<locked>> | 98% | 57,667 psi | 90% | 3419 fps | 99.6% |
| Bofors RP5 | <<locked>> | 90% | 56,043 psi | 88% | 3373 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 57,479 psi | 90% | 3301 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 55,854 psi | 88% | 3373 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 57,740 psi | 90% | 3363 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 55,114 psi | 86% | 3310 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 53,954 psi | 85% | 3284 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,653 psi | 90% | 3281 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,782 psi | 89% | 3501 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 58% | 2172 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,275 psi | 88% | 3291 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 56,623 psi | 89% | 3291 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,637 psi | 87% | 3287 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 90% | 53,853 psi | 84% | 3353 fps | 98.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,921 psi | 75% | 3251 fps | 98.2% |
| Lovex S065 | <<locked>> | 82% | 56,188 psi | 88% | 3264 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,578 psi | 86% | 3261 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,261 psi | 90% | 3291 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,493 psi | 90% | 3350 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3281 fps | 99.7% |
| Norma MRP | <<locked>> | 88% | 56,159 psi | 88% | 3396 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,418 psi | 85% | 3281 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,940 psi | 86% | 3376 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 57,276 psi | 90% | 3346 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 53,548 psi | 84% | 3297 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2221 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,478 psi | 89% | 3323 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,158 psi | 86% | 3353 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 53,737 psi | 84% | 3419 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,537 psi | 90% | 3442 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 86% | 54,360 psi | 85% | 3274 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 88% | 56,565 psi | 89% | 3350 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 57,479 psi | 90% | 3301 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,188 psi | 88% | 3264 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,578 psi | 86% | 3261 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,216 psi | 87% | 3212 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,159 psi | 88% | 3343 fps | 99.7% |
| Somchem S361 | <<locked>> | 86% | 56,014 psi | 88% | 3261 fps | 98.7% |
| Somchem S365 | <<locked>> | 84% | 55,738 psi | 87% | 3284 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,898 psi | 89% | 3314 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,043 psi | 88% | 3274 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,884 psi | 89% | 3291 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 55,303 psi | 87% | 3274 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,579 psi | 87% | 3310 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 55,738 psi | 87% | 3392 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 94% | 56,318 psi | 88% | 3373 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 96% | 53,795 psi | 84% | 3369 fps | 97.8% |
| Vihtavuori N570 | <<locked>> | 98% | 54,984 psi | 86% | 3435 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,782 psi | 87% | 3215 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,377 psi | 90% | 3428 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,087 psi | 89% | 3310 fps | 99.8% |
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% | 39,218 psi | 61% | 2946 fps | 98.8% |
| Accurate 4350 | <<locked>> | 80% | 52,286 psi | 82% | 3238 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 43,932 psi | 69% | 3146 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 43,584 psi | 68% | 3104 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 80% | 38,972 psi | 61% | 3018 fps | 95% |
| ADI AR 2217 | <<locked>> | 88% | 38,043 psi | 60% | 2986 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 86% | 32,126 psi | 50% | 2861 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,874 psi | 69% | 3100 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,096 psi | 79% | 3241 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,569 psi | 68% | 3094 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,465 psi | 62% | 3028 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,029 psi | 60% | 2976 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,793 psi | 51% | 2877 fps | 97.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,917 psi | 67% | 3146 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 51,895 psi | 81% | 3343 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 49,850 psi | 78% | 3196 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 36,593 psi | 57% | 2949 fps | 95.4% |
| Bofors RP30 | <<locked>> | 86% | 37,594 psi | 59% | 2992 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 39,465 psi | 62% | 3028 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 53,896 psi | 84% | 3241 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 38,841 psi | 61% | 3009 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 80% | 53,925 psi | 85% | 3297 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,466 psi | 65% | 3025 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,828 psi | 64% | 3012 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,137 psi | 74% | 3107 fps | 100% |
| Hodgdon Retumbo | 92.5 gr | 82% | 34,330 psi | 54% | 2972 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 1949 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,327 psi | 77% | 3166 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 49,429 psi | 77% | 3169 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,873 psi | 67% | 3028 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 40,335 psi | 63% | 3064 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,638 psi | 61% | 3038 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 52,692 psi | 83% | 3205 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,155 psi | 80% | 3199 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 33,518 psi | 53% | 2799 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 50,038 psi | 78% | 3215 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 33,707 psi | 53% | 2923 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 41,785 psi | 65% | 3107 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 50,937 psi | 80% | 3219 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 40,277 psi | 63% | 3071 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 49,966 psi | 78% | 3219 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,402 psi | 52% | 2854 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 45% | 1991 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,663 psi | 83% | 3261 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,184 psi | 80% | 3284 fps | 100% |
| ReloadSwiss RS 76 | 99 gr | 82% | 33,649 psi | 53% | 2940 fps | 96.4% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 41,872 psi | 66% | 3123 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 44,556 psi | 70% | 3077 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 42,946 psi | 67% | 3077 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 53,896 psi | 84% | 3241 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,692 psi | 83% | 3205 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,155 psi | 80% | 3199 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,721 psi | 81% | 3150 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,612 psi | 67% | 3071 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 45,527 psi | 71% | 3058 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 48,414 psi | 76% | 3166 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,453 psi | 68% | 3054 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 80% | 52,460 psi | 82% | 3212 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,739 psi | 59% | 2907 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 80% | 51,692 psi | 81% | 3215 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,322 psi | 66% | 3061 fps | 100% |
| Vihtavuori N560 | 93.7 gr | 80% | 41,684 psi | 65% | 3094 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 42,322 psi | 66% | 3087 fps | 96% |
| Vihtavuori N568 | <<locked>> | 92% | 46,340 psi | 73% | 3219 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 96% | 50,908 psi | 80% | 3353 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,982 psi | 81% | 3156 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,389 psi | 55% | 3009 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,871 psi | 62% | 2966 fps | 96.8% |
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 | 150gr | Sako Powerhead Blade. Hodgdon Retumbo delivers the highest muzzle velocity at 3,501 fps; across all powders the maximum-charge window runs from 2,172 fps to 3,501 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 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-33, Hodgdon TrailBoss 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, Vihtavuori N560 rank at the top here: for .30-378 Weath. Mag. with the .308 | 150gr | Sako Powerhead Blade 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.