Load Specifications
Load data in caliber .30-378 Weath. Mag. with .3085 | 180gr | Prvi Partizan SP bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Hodgdon Retumbo.
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>> | 84% | 54,143 psi | 85% | 3002 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 3022 fps | 96.8% |
| Accurate MAGPRO | <<locked>> | 84% | 56,985 psi | 89% | 3176 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 82% | 54,940 psi | 86% | 3091 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 57,551 psi | 90% | 3173 fps | 100% |
| ADI AR 2217 | <<locked>> | 94% | 56,884 psi | 89% | 3153 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 57,609 psi | 90% | 3287 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 96% | 56,304 psi | 88% | 3173 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 55,158 psi | 86% | 3087 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 54,607 psi | 86% | 3081 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 54,259 psi | 85% | 3100 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,275 psi | 88% | 3061 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,101 psi | 89% | 3146 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,130 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,405 psi | 87% | 3186 fps | 98.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,535 psi | 87% | 3179 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 54,157 psi | 85% | 3064 fps | 98.4% |
| Bofors RP15 | <<locked>> | 88% | 57,580 psi | 90% | 3156 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,913 psi | 89% | 3166 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 54,259 psi | 85% | 3100 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 54,317 psi | 85% | 3110 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,318 psi | 88% | 3097 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,187 psi | 86% | 3077 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,623 psi | 89% | 3241 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2011 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,449 psi | 88% | 3074 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 86% | 56,159 psi | 88% | 3156 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,376 psi | 87% | 3156 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 56,260 psi | 88% | 3035 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,753 psi | 89% | 3179 fps | 100% |
| Norma MRP | <<locked>> | 82% | 54,462 psi | 85% | 3117 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,667 psi | 90% | 3179 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 56,115 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,015 psi | 61% | 2060 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,522 psi | 90% | 3225 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,724 psi | 89% | 3192 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 55,317 psi | 87% | 3058 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 54,462 psi | 85% | 3071 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 3038 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,099 psi | 85% | 3068 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,666 psi | 89% | 3048 fps | 99.8% |
| Somchem S385 | <<locked>> | 82% | 54,723 psi | 86% | 3038 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 54,940 psi | 86% | 3028 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 54,273 psi | 85% | 3051 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 54,418 psi | 85% | 3038 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,725 psi | 90% | 3189 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 55,201 psi | 87% | 3120 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 92% | 57,014 psi | 89% | 3196 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 54,433 psi | 85% | 3196 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,392 psi | 90% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 54,549 psi | 85% | 3035 fps | 100% |
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% | 47,413 psi | 74% | 2890 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 45,905 psi | 72% | 2953 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 80% | 49,516 psi | 78% | 3041 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 80% | 51,474 psi | 81% | 3031 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 46,644 psi | 73% | 2972 fps | 99% |
| ADI AR 2217 | <<locked>> | 80% | 34,896 psi | 55% | 2700 fps | 96.2% |
| ADI AR 2218 | 109 gr | 90% | 42,801 psi | 67% | 2976 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 32,169 psi | 50% | 2671 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,764 psi | 81% | 3028 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,271 psi | 80% | 3022 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,413 psi | 74% | 2976 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,267 psi | 73% | 2904 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,451 psi | 63% | 2851 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 53,084 psi | 83% | 3091 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 44,222 psi | 69% | 2966 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 92% | 44,353 psi | 70% | 2959 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,469 psi | 70% | 2877 fps | 96.2% |
| Bofors RP15 | <<locked>> | 80% | 44,237 psi | 69% | 2910 fps | 99.3% |
| Bofors RP30 | <<locked>> | 80% | 37,797 psi | 59% | 2785 fps | 97.3% |
| Bofors RP5 | <<locked>> | 80% | 47,413 psi | 74% | 2976 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 80% | 37,898 psi | 59% | 2782 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 80% | 49,052 psi | 77% | 2969 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,182 psi | 76% | 2953 fps | 98.8% |
| Hodgdon Retumbo | 91.4 gr | 80% | 39,407 psi | 62% | 2907 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,442 psi | 45% | 1801 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,734 psi | 78% | 2956 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 80% | 45,455 psi | 71% | 2959 fps | 98.9% |
| IMR 8133 Enduron | <<locked>> | 84% | 34,243 psi | 54% | 2713 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 40,814 psi | 64% | 2762 fps | 99.9% |
| Norma 217 | <<locked>> | 80% | 30,139 psi | 47% | 2612 fps | 96.3% |
| Norma MRP | <<locked>> | 80% | 50,691 psi | 79% | 3054 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,079 psi | 72% | 2976 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 80% | 41,582 psi | 65% | 2841 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,240 psi | 46% | 1844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,073 psi | 61% | 2881 fps | 99.8% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 38,754 psi | 61% | 2831 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 51,938 psi | 81% | 3002 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 51,039 psi | 80% | 3012 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 44,730 psi | 70% | 2904 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,691 psi | 79% | 3009 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 53,040 psi | 83% | 2989 fps | 99.5% |
| Somchem S385 | <<locked>> | 80% | 51,256 psi | 80% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,078 psi | 71% | 2858 fps | 99.7% |
| Vihtavuori N170 | <<locked>> | 86% | 47,340 psi | 74% | 2923 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 51,053 psi | 80% | 2986 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,140 psi | 79% | 3051 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 80% | 41,945 psi | 66% | 2861 fps | 97.8% |
| Vihtavuori N568 | <<locked>> | 82% | 39,856 psi | 62% | 2851 fps | 95.9% |
| Vihtavuori N570 | 102 gr | 86% | 43,830 psi | 69% | 2979 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,701 psi | 72% | 2976 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,456 psi | 74% | 2913 fps | 99.7% |
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 51 powders for .30-378 Weath. Mag. loaded with the .3085 | 180gr | Prvi Partizan SP. ADI AR 2218 delivers the highest muzzle velocity at 3,287 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,287 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.3085" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Vihtavuori N570, Hodgdon Retumbo rank at the top here: for .30-378 Weath. Mag. with the .3085 | 180gr | Prvi Partizan SP 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.