Load Specifications
Load data in caliber 7.82 Warbird with .311 | 182gr | Prvi Partizan FMJ BT bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 80.
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>> | 90% | 59,451 psi | 89% | 3028 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 59,901 psi | 90% | 3048 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 58,421 psi | 88% | 3143 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 86% | 56,942 psi | 85% | 3064 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 59,146 psi | 89% | 3140 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 57,725 psi | 87% | 3110 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,215 psi | 81% | 3163 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,405 psi | 85% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,087 psi | 86% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 60,234 psi | 90% | 3110 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 59,495 psi | 89% | 3133 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,421 psi | 86% | 3031 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,740 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,349 psi | 87% | 3127 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 60,176 psi | 90% | 3215 fps | 98.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,140 psi | 77% | 3054 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 59,698 psi | 89% | 3094 fps | 98.8% |
| Bofors RP15 | <<locked>> | 92% | 58,639 psi | 88% | 3117 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,435 psi | 86% | 3123 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 59,495 psi | 89% | 3133 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 59,408 psi | 89% | 3133 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 58,189 psi | 87% | 3068 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,232 psi | 86% | 3054 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,174 psi | 86% | 2966 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,695 psi | 85% | 3199 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,681 psi | 56% | 1946 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 59,074 psi | 89% | 3035 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 59,872 psi | 90% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,566 psi | 88% | 3045 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 57,450 psi | 86% | 3120 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,648 psi | 77% | 3048 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 59,176 psi | 89% | 3005 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 57,638 psi | 86% | 3009 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,334 psi | 86% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,782 psi | 85% | 3041 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,692 psi | 79% | 3074 fps | 100% |
| Norma MRP | <<locked>> | 88% | 59,857 psi | 90% | 3150 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,653 psi | 86% | 3025 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,827 psi | 88% | 3143 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 56,797 psi | 85% | 3038 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,334 psi | 86% | 3071 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,537 psi | 58% | 1988 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 60,162 psi | 90% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,697 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,827 psi | 87% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,058 psi | 86% | 3153 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 86% | 57,435 psi | 86% | 3031 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 60,002 psi | 90% | 3104 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 59,176 psi | 89% | 3005 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,638 psi | 86% | 3009 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,146 psi | 87% | 2959 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 59,611 psi | 89% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 59,074 psi | 89% | 3022 fps | 99.7% |
| Somchem S365 | <<locked>> | 84% | 59,263 psi | 89% | 3028 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,579 psi | 85% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 59,350 psi | 89% | 3015 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 60,350 psi | 90% | 3051 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 59,495 psi | 89% | 3077 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 82% | 58,581 psi | 88% | 3022 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 59,364 psi | 89% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 59,205 psi | 89% | 3153 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 59,988 psi | 90% | 3140 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 57,580 psi | 86% | 3153 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 98% | 58,798 psi | 88% | 3219 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 58,827 psi | 88% | 2959 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,508 psi | 86% | 3127 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,362 psi | 84% | 3009 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% | 42,467 psi | 64% | 2753 fps | 99.9% |
| Accurate 4350 | <<locked>> | 80% | 55,898 psi | 84% | 2992 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 44,077 psi | 66% | 2884 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 46,514 psi | 70% | 2887 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 41,756 psi | 63% | 2825 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 35,694 psi | 54% | 2677 fps | 96% |
| ADI AR 2218 | <<locked>> | 96% | 46,702 psi | 70% | 3009 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 28,558 psi | 43% | 2516 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,432 psi | 80% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,398 psi | 70% | 2877 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,467 psi | 64% | 2828 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,162 psi | 62% | 2769 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,650 psi | 53% | 2703 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,572 psi | 70% | 2940 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,382 psi | 67% | 2930 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,413 psi | 71% | 2986 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,294 psi | 65% | 2792 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 39,479 psi | 59% | 2762 fps | 98% |
| Bofors RP30 | <<locked>> | 80% | 33,156 psi | 50% | 2631 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 42,467 psi | 64% | 2828 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 33,794 psi | 51% | 2631 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 80% | 44,295 psi | 66% | 2822 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,569 psi | 65% | 2808 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,285 psi | 75% | 2867 fps | 100% |
| Hodgdon Retumbo | 82.1 gr | 80% | 34,824 psi | 52% | 2743 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 42% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,170 psi | 78% | 2927 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,692 psi | 79% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,455 psi | 68% | 2815 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 40,524 psi | 61% | 2805 fps | 97.3% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,156 psi | 51% | 2677 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 55,637 psi | 83% | 2956 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 54,172 psi | 81% | 2956 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 36,651 psi | 55% | 2628 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 53,069 psi | 80% | 2982 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 30,008 psi | 45% | 2579 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 45,136 psi | 68% | 2907 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,085 psi | 81% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,538 psi | 61% | 2818 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 80% | 53,142 psi | 80% | 2982 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,347 psi | 54% | 2687 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,950 psi | 43% | 1781 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 56,072 psi | 84% | 3015 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,592 psi | 82% | 3041 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 33,997 psi | 51% | 2713 fps | 98.3% |
| ReloadSwiss RS 80 | 95.2 gr | 86% | 39,030 psi | 59% | 2805 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 47,369 psi | 71% | 2861 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,006 psi | 69% | 2867 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 55,637 psi | 83% | 2956 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 54,172 psi | 81% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,578 psi | 82% | 2907 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,672 psi | 68% | 2864 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 48,254 psi | 72% | 2844 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 51,953 psi | 78% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,441 psi | 70% | 2841 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 55,550 psi | 83% | 2959 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 40,538 psi | 61% | 2713 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 92% | 51,895 psi | 78% | 2953 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 54,882 psi | 82% | 2969 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,745 psi | 69% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,846 psi | 67% | 2897 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 37,130 psi | 56% | 2707 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 40,176 psi | 60% | 2822 fps | 95.6% |
| Vihtavuori N570 | 97.9 gr | 92% | 47,311 psi | 71% | 3009 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 54,911 psi | 82% | 2907 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,276 psi | 59% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,786 psi | 64% | 2769 fps | 98.8% |
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 67 powders for 7.82 Warbird loaded with the .311 | 182gr | Prvi Partizan FMJ BT. Vihtavuori N570 delivers the highest muzzle velocity at 3,219 fps; across all powders the maximum-charge window runs from 1,946 fps to 3,219 fps. ADI AR 2218 gives the best case fill at 100 %, and 67 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 182.0 gr projectile in 0.311" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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, Vihtavuori N570, ReloadSwiss RS 80 rank at the top here: for 7.82 Warbird with the .311 | 182gr | 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.