Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 190gr | Reichenberg Mag Dr ckjagd bullet and 52 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>> | 84% | 54,273 psi | 85% | 2943 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 49,879 psi | 78% | 2976 fps | 97.5% |
| Accurate High Country | <<locked>> | 82% | 56,565 psi | 89% | 3110 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 57,609 psi | 90% | 3120 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 82% | 55,434 psi | 87% | 3031 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,259 psi | 85% | 3051 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 57,624 psi | 90% | 3097 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 54,128 psi | 85% | 3163 fps | 99% |
| ADI AR 2225 | <<locked>> | 96% | 57,174 psi | 90% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,042 psi | 86% | 3022 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 54,752 psi | 86% | 3045 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,724 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,682 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,711 psi | 90% | 3091 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,999 psi | 88% | 3136 fps | 99% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,956 psi | 88% | 3127 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 54,665 psi | 86% | 3015 fps | 98.9% |
| Bofors RP15 | <<locked>> | 86% | 54,317 psi | 85% | 3035 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 57,392 psi | 90% | 3107 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 54,752 psi | 86% | 3045 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 54,969 psi | 86% | 3054 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,710 psi | 89% | 3041 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,709 psi | 87% | 3025 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 57,435 psi | 90% | 3182 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1962 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,898 psi | 89% | 3018 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 86% | 56,840 psi | 89% | 3100 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 55,608 psi | 87% | 2969 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,941 psi | 88% | 3100 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 56,260 psi | 88% | 2972 fps | 100% |
| Norma 217 | <<locked>> | 98% | 57,406 psi | 90% | 3120 fps | 100% |
| Norma MRP | <<locked>> | 82% | 54,955 psi | 86% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,186 psi | 85% | 3058 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 56,637 psi | 89% | 3045 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,885 psi | 61% | 2005 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 53,896 psi | 84% | 3100 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 57,246 psi | 90% | 3136 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 82% | 55,724 psi | 87% | 3002 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 54,839 psi | 86% | 3012 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,822 psi | 81% | 2986 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,476 psi | 85% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,145 psi | 90% | 2992 fps | 99.9% |
| Somchem S385 | <<locked>> | 82% | 55,013 psi | 86% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,230 psi | 87% | 2969 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 54,607 psi | 86% | 3002 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 54,636 psi | 86% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,346 psi | 85% | 3064 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 55,506 psi | 87% | 3061 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 92% | 57,638 psi | 90% | 3140 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 92% | 55,056 psi | 86% | 3143 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 53,838 psi | 84% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,027 psi | 86% | 2979 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 47,355 psi | 74% | 2828 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 42,859 psi | 67% | 2835 fps | 95.4% |
| Accurate High Country | <<locked>> | 80% | 52,605 psi | 82% | 3041 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 49,879 psi | 78% | 2986 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 51,880 psi | 81% | 2972 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 47,181 psi | 74% | 2923 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 34,954 psi | 55% | 2651 fps | 96.9% |
| ADI AR 2218 | <<locked>> | 90% | 43,134 psi | 68% | 2930 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 32,242 psi | 51% | 2621 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,634 psi | 81% | 2963 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,819 psi | 75% | 2923 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,441 psi | 73% | 2841 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,669 psi | 64% | 2792 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 53,403 psi | 84% | 3028 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 41,336 psi | 65% | 2844 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 92% | 44,512 psi | 70% | 2907 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,860 psi | 70% | 2828 fps | 96.9% |
| Bofors RP15 | <<locked>> | 80% | 44,396 psi | 70% | 2854 fps | 99.5% |
| Bofors RP30 | <<locked>> | 80% | 37,826 psi | 59% | 2730 fps | 97.8% |
| Bofors RP5 | <<locked>> | 80% | 47,819 psi | 75% | 2923 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 38,203 psi | 60% | 2733 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 80% | 49,385 psi | 77% | 2917 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,646 psi | 76% | 2904 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 80% | 39,798 psi | 62% | 2854 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,471 psi | 45% | 1755 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,024 psi | 78% | 2900 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 45,948 psi | 72% | 2907 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 51,996 psi | 81% | 2907 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 82% | 31,894 psi | 50% | 2592 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 40,698 psi | 64% | 2700 fps | 100% |
| Norma 217 | <<locked>> | 80% | 30,023 psi | 47% | 2556 fps | 96.8% |
| Norma MRP | <<locked>> | 80% | 51,097 psi | 80% | 2995 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,514 psi | 73% | 2923 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 80% | 41,829 psi | 66% | 2789 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,254 psi | 46% | 1798 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,218 psi | 61% | 2828 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 35,955 psi | 56% | 2707 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 52,228 psi | 82% | 2943 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 51,343 psi | 80% | 2953 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 44,991 psi | 71% | 2854 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,995 psi | 80% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 53,417 psi | 84% | 2933 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 51,590 psi | 81% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,237 psi | 71% | 2799 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 47,587 psi | 75% | 2874 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 51,140 psi | 80% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,546 psi | 79% | 2999 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 41,974 psi | 66% | 2805 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 80% | 37,144 psi | 58% | 2730 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 86% | 44,266 psi | 69% | 2930 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,079 psi | 72% | 2917 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,688 psi | 75% | 2858 fps | 99.9% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 58 powders for .30-378 Weath. Mag. loaded with the .308 | 190gr | Reichenberg Mag Dr ckjagd. Hodgdon Retumbo delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,182 fps. Accurate 8700 gives the best case fill at 100 %, and 58 of the 58 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 190.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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. As outliers, Hodgdon US 869, Ramshot LRT, Vihtavuori 20N29 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.