Load Specifications
Load data in caliber 7.82 Warbird with .308 | 200gr | Speer Grand Slam bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ADI AR 2218.
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% | 56,942 psi | 85% | 2874 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 48,109 psi | 72% | 2844 fps | 97.1% |
| Accurate High Country | <<locked>> | 84% | 58,972 psi | 88% | 3038 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 60,002 psi | 90% | 3048 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 58,015 psi | 87% | 2963 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,695 psi | 85% | 2982 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 59,727 psi | 90% | 3022 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 56,101 psi | 84% | 3091 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 98% | 58,943 psi | 88% | 3038 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 58,044 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,435 psi | 86% | 2949 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,188 psi | 86% | 2976 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 59,117 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 59,785 psi | 90% | 3005 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 60,336 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 58,262 psi | 87% | 3071 fps | 99.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 58,059 psi | 87% | 3061 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,927 psi | 85% | 2943 fps | 99.1% |
| Bofors RP15 | <<locked>> | 88% | 56,565 psi | 85% | 2966 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 59,553 psi | 89% | 3035 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 57,188 psi | 86% | 2976 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 57,276 psi | 86% | 2982 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 59,379 psi | 89% | 2972 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 86% | 58,247 psi | 87% | 2953 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 58,262 psi | 87% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 59,524 psi | 89% | 3107 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,869 psi | 57% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 59,828 psi | 90% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 59,248 psi | 89% | 2943 fps | 100% |
| IMR 7828 SSC | <<locked>> | 88% | 59,176 psi | 89% | 3025 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,870 psi | 87% | 2897 fps | 96.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,856 psi | 87% | 3028 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 58,827 psi | 88% | 2900 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 59,408 psi | 89% | 3045 fps | 100% |
| Norma MRP | <<locked>> | 84% | 57,319 psi | 86% | 2989 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,507 psi | 85% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 59,248 psi | 89% | 2972 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,928 psi | 58% | 1916 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 56,130 psi | 84% | 3035 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 59,567 psi | 89% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 58,247 psi | 87% | 2930 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 57,435 psi | 86% | 2943 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 50,125 psi | 75% | 2858 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,058 psi | 86% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 59,669 psi | 89% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 57,696 psi | 86% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,711 psi | 87% | 2897 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,942 psi | 85% | 2933 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 84% | 57,174 psi | 86% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,652 psi | 85% | 2995 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 90% | 57,870 psi | 87% | 2992 fps | 100% |
| Vihtavuori N568 | <<locked>> | 94% | 59,857 psi | 90% | 3068 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 94% | 57,276 psi | 86% | 3077 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,999 psi | 84% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,566 psi | 86% | 2910 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% | 46,673 psi | 70% | 2717 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 41,481 psi | 62% | 2713 fps | 95% |
| Accurate High Country | <<locked>> | 80% | 51,416 psi | 77% | 2917 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 80% | 48,660 psi | 73% | 2861 fps | 99% |
| ADI AR 2209 | <<locked>> | 80% | 50,676 psi | 76% | 2848 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 46,006 psi | 69% | 2802 fps | 99.3% |
| ADI AR 2217 | <<locked>> | 80% | 34,360 psi | 52% | 2546 fps | 96.8% |
| ADI AR 2218 | 99.7 gr | 90% | 41,887 psi | 63% | 2805 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 31,633 psi | 47% | 2520 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,053 psi | 77% | 2848 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,575 psi | 76% | 2841 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,775 psi | 70% | 2802 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,571 psi | 68% | 2730 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,682 psi | 59% | 2684 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,054 psi | 78% | 2904 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 40,074 psi | 60% | 2733 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 92% | 43,091 psi | 65% | 2789 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,859 psi | 66% | 2710 fps | 96.6% |
| Bofors RP15 | <<locked>> | 80% | 43,584 psi | 65% | 2740 fps | 99.5% |
| Bofors RP30 | <<locked>> | 80% | 37,115 psi | 56% | 2625 fps | 97.8% |
| Bofors RP5 | <<locked>> | 80% | 46,775 psi | 70% | 2802 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 80% | 37,376 psi | 56% | 2625 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 80% | 48,399 psi | 73% | 2792 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,616 psi | 71% | 2779 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,679 psi | 82% | 2808 fps | 100% |
| Hodgdon Retumbo | 83.6 gr | 80% | 38,769 psi | 58% | 2740 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,471 psi | 43% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 56,159 psi | 84% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,052 psi | 74% | 2776 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 80% | 44,744 psi | 67% | 2782 fps | 99.1% |
| IMR 7977 Enduron | <<locked>> | 88% | 50,937 psi | 76% | 2779 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 82% | 31,343 psi | 47% | 2497 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 40,350 psi | 60% | 2598 fps | 100% |
| Norma 217 | <<locked>> | 80% | 29,501 psi | 44% | 2464 fps | 96.9% |
| Norma MRP | <<locked>> | 80% | 49,893 psi | 75% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,353 psi | 68% | 2802 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 80% | 40,843 psi | 61% | 2677 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,327 psi | 44% | 1716 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,218 psi | 57% | 2713 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 35,114 psi | 53% | 2605 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 51,242 psi | 77% | 2818 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 50,227 psi | 75% | 2831 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 43,743 psi | 66% | 2736 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,879 psi | 75% | 2825 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 52,301 psi | 78% | 2808 fps | 99.6% |
| Somchem S385 | <<locked>> | 80% | 50,647 psi | 76% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 44,425 psi | 67% | 2684 fps | 99.8% |
| Vihtavuori N170 | <<locked>> | 86% | 46,557 psi | 70% | 2753 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 50,227 psi | 75% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,385 psi | 74% | 2874 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 80% | 41,220 psi | 62% | 2697 fps | 98.2% |
| Vihtavuori N568 | <<locked>> | 80% | 36,260 psi | 54% | 2625 fps | 95.3% |
| Vihtavuori N570 | 93.3 gr | 86% | 42,902 psi | 64% | 2808 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,802 psi | 67% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,833 psi | 70% | 2740 fps | 99.8% |
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 55 powders for 7.82 Warbird loaded with the .308 | 200gr | Speer Grand Slam. Hodgdon Retumbo delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,107 fps. Accurate 8700 gives the best case fill at 100 %, and 55 of the 55 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 200.0 gr projectile in 0.308" calls for a 1:14.5 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, Hodgdon Retumbo, ADI AR 2218 rank at the top here: for 7.82 Warbird with the .308 | 200gr | Speer Grand Slam 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.