Load Specifications
Load data in caliber 7.82 Warbird with .308 | 155gr | Merlin Virtus bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and IMR 7828 SSC.
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>> | 94% | 60,147 psi | 90% | 3251 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,782 psi | 85% | 3228 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 59,263 psi | 89% | 3366 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 90% | 58,117 psi | 87% | 3297 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 60,234 psi | 90% | 3369 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,389 psi | 82% | 3258 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,660 psi | 73% | 3209 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,972 psi | 87% | 3294 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 59,393 psi | 89% | 3304 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,537 psi | 86% | 3281 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 60,278 psi | 90% | 3360 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,682 psi | 86% | 3258 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,812 psi | 87% | 3330 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 58,755 psi | 88% | 3356 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,551 psi | 86% | 3255 fps | 97.2% |
| Bofors RP15 | <<locked>> | 96% | 59,146 psi | 89% | 3340 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,450 psi | 86% | 3333 fps | 99.6% |
| Bofors RP5 | <<locked>> | 94% | 60,278 psi | 90% | 3360 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 58,610 psi | 88% | 3232 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 60,249 psi | 90% | 3356 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 58,465 psi | 88% | 3291 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,043 psi | 86% | 3241 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 59,625 psi | 89% | 3297 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 92% | 58,465 psi | 88% | 3278 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 58,073 psi | 87% | 3202 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,637 psi | 85% | 3415 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 59,756 psi | 90% | 3327 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 56% | 2093 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,087 psi | 86% | 3215 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 60,031 psi | 90% | 3255 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,232 psi | 86% | 3219 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 60,220 psi | 90% | 3274 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 94% | 58,189 psi | 87% | 3346 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,034 psi | 66% | 3097 fps | 97.2% |
| Lovex S065 | <<locked>> | 84% | 57,159 psi | 86% | 3196 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 59,117 psi | 89% | 3248 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,392 psi | 86% | 3212 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,450 psi | 88% | 3278 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 44,469 psi | 67% | 3127 fps | 99.1% |
| Norma MRP | <<locked>> | 90% | 56,376 psi | 85% | 3317 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,958 psi | 88% | 3268 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 59,350 psi | 89% | 3366 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 58,088 psi | 87% | 3274 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,059 psi | 87% | 3291 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 57% | 2142 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,029 psi | 85% | 3248 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 60,104 psi | 90% | 3346 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,015 psi | 87% | 3409 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,217 psi | 86% | 3356 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 82% | 60,162 psi | 90% | 3225 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 58,929 psi | 88% | 3261 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 57,072 psi | 86% | 3271 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 58,610 psi | 88% | 3232 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,159 psi | 86% | 3196 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 59,117 psi | 89% | 3248 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 59,379 psi | 89% | 3081 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 60,104 psi | 90% | 3199 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,652 psi | 85% | 3264 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 59,437 psi | 89% | 3215 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 56,840 psi | 85% | 3186 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 60,002 psi | 90% | 3264 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,435 psi | 86% | 3235 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,246 psi | 86% | 3130 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,898 psi | 85% | 3199 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,450 psi | 86% | 3219 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 59,944 psi | 90% | 3261 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 59,640 psi | 89% | 3287 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 60,046 psi | 90% | 3383 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 96% | 56,188 psi | 84% | 3287 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,769 psi | 87% | 3356 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,666 psi | 85% | 3146 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,653 psi | 88% | 3291 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,768 psi | 85% | 3346 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,798 psi | 87% | 3235 fps | 99.7% |
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% | 36,680 psi | 55% | 2815 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 49,226 psi | 74% | 3104 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,222 psi | 66% | 3077 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 41,118 psi | 62% | 2969 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 42,177 psi | 63% | 3022 fps | 96% |
| ADI AR 2217 | <<locked>> | 92% | 40,901 psi | 61% | 2982 fps | 96% |
| ADI AR 2225 | <<locked>> | 88% | 32,155 psi | 48% | 2795 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,224 psi | 71% | 3110 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 55,187 psi | 83% | 3241 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,075 psi | 62% | 2963 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,883 psi | 55% | 2890 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,534 psi | 53% | 2851 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,705 psi | 46% | 2746 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,624 psi | 59% | 3005 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,589 psi | 76% | 3127 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 36,782 psi | 55% | 2884 fps | 95.4% |
| Bofors RP30 | <<locked>> | 88% | 37,434 psi | 56% | 2923 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 36,883 psi | 55% | 2890 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 51,459 psi | 77% | 3110 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 39,015 psi | 58% | 2940 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 51,068 psi | 77% | 3163 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 53,388 psi | 80% | 3179 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 42,076 psi | 63% | 2963 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,220 psi | 62% | 2943 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,440 psi | 67% | 2979 fps | 100% |
| Hodgdon Retumbo | 87.7 gr | 84% | 34,389 psi | 52% | 2904 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 51,358 psi | 77% | 3189 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 42% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,934 psi | 70% | 3035 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,866 psi | 79% | 3136 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,775 psi | 70% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,727 psi | 61% | 2900 fps | 95% |
| IMR 7828 SSC | 87.6 gr | 84% | 40,582 psi | 61% | 2995 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,290 psi | 57% | 2963 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 50,270 psi | 75% | 3077 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,631 psi | 73% | 3068 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,372 psi | 47% | 2677 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 47,282 psi | 71% | 3077 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 33,243 psi | 50% | 2848 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 38,899 psi | 58% | 2966 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 48,182 psi | 72% | 3087 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,509 psi | 61% | 3002 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 47,195 psi | 71% | 3087 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 33,504 psi | 50% | 2792 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 42% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,545 psi | 74% | 3127 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,921 psi | 72% | 3150 fps | 100% |
| ReloadSwiss RS 76 | 93.9 gr | 84% | 33,721 psi | 51% | 2874 fps | 96.3% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 44,889 psi | 67% | 3123 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 56,202 psi | 84% | 3169 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 42,221 psi | 63% | 2946 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 40,422 psi | 61% | 2943 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 51,459 psi | 77% | 3110 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,270 psi | 75% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,631 psi | 73% | 3068 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 55,709 psi | 84% | 3028 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,269 psi | 74% | 3022 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,089 psi | 60% | 2940 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 55,782 psi | 84% | 3163 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 43,120 psi | 65% | 2927 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 45,498 psi | 68% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,901 psi | 61% | 2923 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 53,534 psi | 80% | 3074 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,647 psi | 74% | 3084 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,462 psi | 53% | 2779 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 48,994 psi | 73% | 3084 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,711 psi | 60% | 2936 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 41,945 psi | 63% | 3028 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 88% | 42,380 psi | 64% | 3015 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 94% | 46,050 psi | 69% | 3136 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,095 psi | 74% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,227 psi | 77% | 3166 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,140 psi | 48% | 2871 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,492 psi | 56% | 2838 fps | 95.8% |
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 74 powders for 7.82 Warbird loaded with the .308 | 155gr | Merlin Virtus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,415 fps; across all powders the maximum-charge window runs from 2,093 fps to 3,415 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 155.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, ReloadSwiss RS 76, IMR 7828 SSC rank at the top here: for 7.82 Warbird with the .308 | 155gr | Merlin Virtus 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.