Load Specifications
Load data in caliber 7.82 Warbird with .308 | 205gr | Sierra GameKing bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, ADI AR 2218 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>> | 86% | 57,014 psi | 85% | 2841 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 48,109 psi | 72% | 2818 fps | 97.3% |
| Accurate High Country | <<locked>> | 84% | 59,088 psi | 89% | 3009 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 60,191 psi | 90% | 3022 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 58,015 psi | 87% | 2930 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,782 psi | 85% | 2953 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 59,886 psi | 90% | 2989 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 56,304 psi | 84% | 3068 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 98% | 59,219 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,624 psi | 86% | 2920 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,276 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 59,190 psi | 89% | 2894 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 60,046 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 60,365 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 58,291 psi | 87% | 3041 fps | 99.4% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 58,189 psi | 87% | 3035 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,985 psi | 85% | 2913 fps | 99.3% |
| Bofors RP15 | <<locked>> | 88% | 56,652 psi | 85% | 2933 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 59,712 psi | 90% | 3002 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 57,276 psi | 86% | 2943 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 57,334 psi | 86% | 2953 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 59,466 psi | 89% | 2940 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 86% | 58,349 psi | 87% | 2923 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 58,334 psi | 87% | 2825 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 59,596 psi | 89% | 3074 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,942 psi | 57% | 1847 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 59,944 psi | 90% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 59,437 psi | 89% | 2913 fps | 100% |
| IMR 7828 SSC | <<locked>> | 88% | 59,277 psi | 89% | 2995 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 58,073 psi | 87% | 2867 fps | 96.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,870 psi | 87% | 2995 fps | 100% |
| Lovex D100 | <<locked>> | 96% | 59,088 psi | 89% | 2920 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 59,059 psi | 89% | 2871 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 59,422 psi | 89% | 3015 fps | 100% |
| Norma MRP | <<locked>> | 84% | 57,421 psi | 86% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,695 psi | 85% | 2959 fps | 100% |
| Ramshot LRTᴾ | <<locked>> | 100% | 59,915 psi | 90% | 3051 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 90% | 59,190 psi | 89% | 2943 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,015 psi | 58% | 1890 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 56,159 psi | 84% | 3002 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 59,698 psi | 89% | 3041 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 58,421 psi | 88% | 2900 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 57,450 psi | 86% | 2910 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 96% | 59,088 psi | 89% | 2920 fps | 96.1% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 50,212 psi | 75% | 2831 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,072 psi | 86% | 2907 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 59,814 psi | 90% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 57,711 psi | 87% | 2877 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,827 psi | 87% | 2867 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 57,072 psi | 86% | 2904 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 84% | 57,319 psi | 86% | 2874 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,768 psi | 85% | 2966 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 57,928 psi | 87% | 2963 fps | 100% |
| Vihtavuori N568 | <<locked>> | 94% | 59,915 psi | 90% | 3038 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 94% | 57,276 psi | 86% | 3045 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 86% | 56,231 psi | 84% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,493 psi | 86% | 2877 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% | 46,775 psi | 70% | 2687 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 41,539 psi | 62% | 2690 fps | 95.3% |
| Accurate High Country | <<locked>> | 80% | 51,576 psi | 77% | 2887 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 48,863 psi | 73% | 2835 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 50,923 psi | 76% | 2822 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 46,151 psi | 69% | 2772 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 34,432 psi | 52% | 2523 fps | 97.1% |
| ADI AR 2218 | 98.1 gr | 90% | 41,887 psi | 63% | 2779 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 31,720 psi | 48% | 2497 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,633 psi | 76% | 2808 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,905 psi | 70% | 2776 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,629 psi | 68% | 2697 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,885 psi | 60% | 2657 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,127 psi | 78% | 2874 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 40,176 psi | 60% | 2707 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 92% | 43,323 psi | 65% | 2766 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,859 psi | 66% | 2684 fps | 96.8% |
| Bofors RP15 | <<locked>> | 80% | 43,656 psi | 65% | 2713 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 37,202 psi | 56% | 2598 fps | 98% |
| Bofors RP5 | <<locked>> | 80% | 46,905 psi | 70% | 2776 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 37,463 psi | 56% | 2598 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 80% | 48,501 psi | 73% | 2766 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,703 psi | 72% | 2753 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,679 psi | 82% | 2776 fps | 100% |
| Hodgdon Retumbo | 82.3 gr | 80% | 38,856 psi | 58% | 2713 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,514 psi | 43% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 56,362 psi | 84% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,240 psi | 74% | 2753 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 44,991 psi | 67% | 2759 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 50,995 psi | 76% | 2753 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 82% | 31,401 psi | 47% | 2474 fps | 95.7% |
| Lovex D100 | <<locked>> | 94% | 55,042 psi | 83% | 2858 fps | 95.2% |
| Lovex S071 | <<locked>> | 80% | 40,335 psi | 60% | 2569 fps | 100% |
| Norma 217 | <<locked>> | 80% | 29,675 psi | 44% | 2444 fps | 97.2% |
| Norma MRP | <<locked>> | 80% | 50,067 psi | 75% | 2844 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,353 psi | 68% | 2772 fps | 99.5% |
| Ramshot LRT | <<locked>> | 98% | 55,724 psi | 84% | 2986 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 80% | 40,843 psi | 61% | 2648 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,269 psi | 44% | 1690 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,290 psi | 57% | 2687 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 35,186 psi | 53% | 2582 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 51,285 psi | 77% | 2789 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 50,444 psi | 76% | 2802 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 94% | 55,042 psi | 83% | 2858 fps | 95.2% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 43,787 psi | 66% | 2713 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,125 psi | 75% | 2799 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 52,344 psi | 78% | 2779 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 50,749 psi | 76% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 44,512 psi | 67% | 2657 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 46,688 psi | 70% | 2726 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 50,444 psi | 76% | 2776 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,559 psi | 74% | 2848 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 41,350 psi | 62% | 2671 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 36,434 psi | 55% | 2598 fps | 95.6% |
| Vihtavuori N570 | 91.9 gr | 86% | 43,091 psi | 65% | 2785 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,962 psi | 67% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,949 psi | 70% | 2710 fps | 99.9% |
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 57 powders for 7.82 Warbird loaded with the .308 | 205gr | Sierra GameKing. Hodgdon Retumbo delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,847 fps to 3,074 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 205.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Alliant Reloder-50, 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. Vihtavuori N570, ADI AR 2218, Hodgdon Retumbo rank at the top here: for 7.82 Warbird with the .308 | 205gr | Sierra GameKing 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.