Load Specifications
Load data in caliber .30-378 Weath. Mag. with .311 | 174gr | Prvi Partizan FMJ BT bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and Vihtavuori N570.
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>> | 86% | 55,970 psi | 88% | 3074 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,969 psi | 86% | 3182 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 84% | 56,884 psi | 89% | 3166 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 55,521 psi | 87% | 3179 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 54,723 psi | 86% | 3159 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 55,172 psi | 86% | 3281 fps | 98.4% |
| ADI AR 2225 | <<locked>> | 96% | 53,853 psi | 84% | 3182 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 57,043 psi | 89% | 3159 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,449 psi | 88% | 3153 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,043 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,404 psi | 85% | 3081 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,795 psi | 86% | 3156 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,882 psi | 86% | 3166 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,130 psi | 90% | 3258 fps | 98.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 3248 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,985 psi | 88% | 3140 fps | 98.4% |
| Bofors RP15 | <<locked>> | 88% | 55,608 psi | 87% | 3169 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 54,650 psi | 86% | 3173 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 56,043 psi | 88% | 3176 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,159 psi | 88% | 3182 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,520 psi | 85% | 3110 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,159 psi | 90% | 3156 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,217 psi | 90% | 3064 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 53,983 psi | 85% | 3248 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2037 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,766 psi | 86% | 3084 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 54,085 psi | 85% | 3163 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3222 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 54,317 psi | 85% | 3048 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,230 psi | 85% | 3186 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,333 psi | 88% | 3192 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,405 psi | 87% | 3189 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 53,795 psi | 84% | 3110 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,827 psi | 61% | 2087 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,868 psi | 86% | 3232 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,157 psi | 85% | 3192 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 84% | 57,290 psi | 90% | 3133 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 84% | 56,304 psi | 88% | 3146 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,970 psi | 88% | 3143 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,013 psi | 86% | 3061 fps | 99.5% |
| Somchem S385 | <<locked>> | 84% | 56,695 psi | 89% | 3114 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,623 psi | 89% | 3097 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,115 psi | 88% | 3123 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 56,159 psi | 88% | 3110 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,709 psi | 87% | 3199 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 90% | 56,927 psi | 89% | 3192 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 92% | 54,679 psi | 86% | 3199 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 94% | 56,057 psi | 88% | 3268 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 86% | 54,607 psi | 86% | 3169 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,492 psi | 89% | 3110 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% | 45,672 psi | 72% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 47,674 psi | 75% | 3045 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 80% | 49,705 psi | 78% | 3041 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 45,020 psi | 71% | 2982 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 80% | 33,620 psi | 53% | 2700 fps | 95.1% |
| ADI AR 2218 | 110.4 gr | 92% | 44,164 psi | 69% | 3041 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 30,908 psi | 48% | 2667 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,038 psi | 78% | 3038 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,574 psi | 78% | 3031 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,788 psi | 72% | 2986 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,570 psi | 70% | 2917 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,682 psi | 61% | 2854 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,981 psi | 80% | 3104 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 45,571 psi | 71% | 3038 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 94% | 45,498 psi | 71% | 3025 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,091 psi | 68% | 2884 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 42,685 psi | 67% | 2920 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 36,172 psi | 57% | 2785 fps | 96.3% |
| Bofors RP5 | <<locked>> | 80% | 45,788 psi | 72% | 2986 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 80% | 36,521 psi | 57% | 2785 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 80% | 47,500 psi | 74% | 2979 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,688 psi | 73% | 2963 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,592 psi | 84% | 3012 fps | 100% |
| Hodgdon Retumbo | 90.6 gr | 80% | 37,826 psi | 59% | 2907 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,442 psi | 45% | 1827 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,196 psi | 76% | 2966 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 80% | 43,772 psi | 69% | 2963 fps | 98.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 35,114 psi | 55% | 2772 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 39,363 psi | 62% | 2769 fps | 99.6% |
| Norma 217 | <<locked>> | 80% | 28,718 psi | 45% | 2605 fps | 95% |
| Norma MRP | <<locked>> | 80% | 48,776 psi | 76% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,251 psi | 69% | 2982 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 80% | 39,813 psi | 62% | 2844 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,225 psi | 46% | 1870 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,318 psi | 58% | 2877 fps | 99.3% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 40,016 psi | 63% | 2904 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 50,401 psi | 79% | 3015 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 49,255 psi | 77% | 3022 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,907 psi | 77% | 3018 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 51,430 psi | 81% | 2999 fps | 99.1% |
| Somchem S385 | <<locked>> | 80% | 49,661 psi | 78% | 2992 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 43,468 psi | 68% | 2864 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 88% | 49,023 psi | 77% | 2992 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 49,327 psi | 77% | 3002 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,312 psi | 76% | 3058 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 80% | 40,408 psi | 63% | 2867 fps | 97% |
| Vihtavuori N568 | <<locked>> | 84% | 41,060 psi | 64% | 2920 fps | 95.9% |
| Vihtavuori N570 | 103.5 gr | 88% | 45,179 psi | 71% | 3048 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,555 psi | 68% | 2986 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,948 psi | 72% | 2923 fps | 99.4% |
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 50 powders for .30-378 Weath. Mag. loaded with the .311 | 174gr | Prvi Partizan FMJ BT. ADI AR 2218 delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 2,037 fps to 3,281 fps. Alliant Reloder-50 gives the best case fill at 100 %, and 50 of the 50 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 174.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-50, Hodgdon TrailBoss, IMR 8133 Enduron 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, ADI AR 2218, Vihtavuori N570 rank at the top here: for .30-378 Weath. Mag. with the .311 | 174gr | Prvi Partizan FMJ BT 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.