Load Specifications
Load data in caliber 7.82 Warbird with .311 | 180gr | Sellier & Bellot SPRN bullet and 62 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 ReloadSwiss RS 76.
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>> | 88% | 57,653 psi | 86% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 59,596 psi | 89% | 3186 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,594 psi | 85% | 3130 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 58,798 psi | 88% | 3114 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 57,290 psi | 86% | 3130 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 60,234 psi | 90% | 3163 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,579 psi | 85% | 3225 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 59,030 psi | 88% | 3182 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 58,972 psi | 88% | 3110 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,972 psi | 88% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,320 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,725 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 59,509 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 60,118 psi | 90% | 3156 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,478 psi | 85% | 3114 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 58,494 psi | 88% | 3202 fps | 98.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,056 psi | 81% | 3117 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,725 psi | 87% | 3084 fps | 98.6% |
| Bofors RP15 | <<locked>> | 90% | 57,087 psi | 86% | 3110 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 59,988 psi | 90% | 3176 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,725 psi | 87% | 3123 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,609 psi | 86% | 3123 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 60,176 psi | 90% | 3117 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 59,074 psi | 89% | 3100 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 58,914 psi | 88% | 3005 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 59,408 psi | 89% | 3251 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,797 psi | 57% | 1972 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,029 psi | 85% | 3022 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 58,030 psi | 87% | 3025 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 60,321 psi | 90% | 3091 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 90% | 59,654 psi | 89% | 3169 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,041 psi | 81% | 3100 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 59,437 psi | 89% | 3054 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 59,306 psi | 89% | 3041 fps | 100% |
| Norma 204 | <<locked>> | 82% | 58,639 psi | 88% | 3091 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,245 psi | 83% | 3127 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,885 psi | 87% | 3136 fps | 100% |
| Norma URP | <<locked>> | 82% | 59,567 psi | 89% | 3071 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,913 psi | 85% | 3133 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 58,682 psi | 88% | 3081 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 59,683 psi | 89% | 3117 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,769 psi | 58% | 2018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,318 psi | 84% | 3179 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 59,959 psi | 90% | 3209 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 86% | 59,234 psi | 89% | 3081 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 86% | 58,160 psi | 87% | 3094 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 59,437 psi | 89% | 3054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 59,785 psi | 90% | 3005 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,769 psi | 87% | 3087 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,985 psi | 85% | 3012 fps | 99.6% |
| Somchem S365 | <<locked>> | 82% | 57,334 psi | 86% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,494 psi | 88% | 3058 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 58,378 psi | 88% | 3041 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,682 psi | 86% | 3068 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 82% | 60,263 psi | 90% | 3064 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,711 psi | 87% | 3054 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,261 psi | 86% | 3140 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 58,363 psi | 87% | 3133 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 60,292 psi | 90% | 3209 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 96% | 57,363 psi | 86% | 3209 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 60,321 psi | 90% | 3173 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 58,334 psi | 87% | 3054 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% | 44,019 psi | 66% | 2795 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 48,370 psi | 73% | 2995 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 45,818 psi | 69% | 2933 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 80% | 47,979 psi | 72% | 2930 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 43,250 psi | 65% | 2871 fps | 98% |
| ADI AR 2217 | <<locked>> | 82% | 34,577 psi | 52% | 2661 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 94% | 45,426 psi | 68% | 2995 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 29,675 psi | 44% | 2566 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,370 psi | 73% | 2933 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 55,187 psi | 83% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,921 psi | 72% | 2923 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,005 psi | 66% | 2877 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,859 psi | 64% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,028 psi | 56% | 2749 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,718 psi | 73% | 2989 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 43,207 psi | 65% | 2917 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 96% | 46,441 psi | 70% | 2976 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,512 psi | 67% | 2838 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 41,017 psi | 61% | 2812 fps | 98.4% |
| Bofors RP30 | <<locked>> | 80% | 34,592 psi | 52% | 2677 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 44,005 psi | 66% | 2877 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 80% | 35,041 psi | 53% | 2677 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 80% | 45,890 psi | 69% | 2871 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,020 psi | 67% | 2854 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,764 psi | 78% | 2907 fps | 100% |
| Hodgdon Retumbo | 85.4 gr | 80% | 36,245 psi | 54% | 2795 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 42% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,548 psi | 80% | 2969 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,244 psi | 81% | 2972 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,702 psi | 70% | 2861 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 80% | 42,076 psi | 63% | 2854 fps | 97.8% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,417 psi | 50% | 2667 fps | 95% |
| Lovex S070 | <<locked>> | 80% | 55,811 psi | 84% | 3002 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 37,971 psi | 57% | 2671 fps | 99.4% |
| Norma 204 | <<locked>> | 80% | 54,781 psi | 82% | 3028 fps | 99.9% |
| Norma 217 | <<locked>> | 82% | 29,298 psi | 44% | 2566 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 46,876 psi | 70% | 2953 fps | 99.9% |
| Norma URP | <<locked>> | 80% | 55,811 psi | 84% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,264 psi | 63% | 2867 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 80% | 54,882 psi | 82% | 3025 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 38,029 psi | 57% | 2736 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,124 psi | 44% | 1808 fps | 100% |
| ReloadSwiss RS 76 | 91.4 gr | 80% | 35,592 psi | 53% | 2769 fps | 98.9% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 37,927 psi | 57% | 2789 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 48,762 psi | 73% | 2904 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 47,645 psi | 71% | 2917 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 55,811 psi | 84% | 3002 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 56,072 psi | 84% | 2949 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,311 psi | 71% | 2913 fps | 99.5% |
| Somchem S361 | <<locked>> | 80% | 49,763 psi | 75% | 2890 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 53,621 psi | 80% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,950 psi | 72% | 2887 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,974 psi | 63% | 2759 fps | 99.1% |
| Vihtavuori N170 | <<locked>> | 90% | 50,430 psi | 76% | 2943 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 56,434 psi | 85% | 3009 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 47,398 psi | 71% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,514 psi | 70% | 2949 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 80% | 38,682 psi | 58% | 2756 fps | 96.5% |
| Vihtavuori N568 | <<locked>> | 84% | 39,117 psi | 59% | 2808 fps | 95.2% |
| Vihtavuori N570 | 99.7 gr | 90% | 46,209 psi | 69% | 2999 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,307 psi | 62% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,208 psi | 66% | 2815 fps | 99.1% |
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 62 powders for 7.82 Warbird loaded with the .311 | 180gr | Sellier & Bellot SPRN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,251 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,251 fps. ADI AR 2218 gives the best case fill at 100 %, and 62 of the 62 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 180.0 gr projectile in 0.311" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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, ReloadSwiss RS 76 rank at the top here: for 7.82 Warbird with the .311 | 180gr | Sellier & Bellot SPRN 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.