Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 105gr | Impala LW CFN bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC and Norma MRP.
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% | 56,782 psi | 87% | 3310 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 57,885 psi | 89% | 3356 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 58,552 psi | 90% | 3461 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 57,754 psi | 89% | 3301 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,508 psi | 88% | 3396 fps | 99% |
| ADI AR 2213 | <<locked>> | 94% | 55,419 psi | 85% | 3392 fps | 97.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,285 psi | 77% | 3271 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,208 psi | 70% | 3235 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,638 psi | 89% | 3409 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,245 psi | 85% | 3363 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,232 psi | 88% | 3383 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,709 psi | 86% | 3396 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,855 psi | 87% | 3373 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,101 psi | 86% | 3428 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,493 psi | 88% | 3471 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 58,508 psi | 90% | 3442 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,489 psi | 81% | 3360 fps | 97.9% |
| Bofors RP5 | <<locked>> | 94% | 55,709 psi | 86% | 3396 fps | 98.9% |
| Bofors RP7 | <<locked>> | 84% | 56,072 psi | 86% | 3284 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,100 psi | 85% | 3373 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 86% | 58,566 psi | 90% | 3399 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 57,406 psi | 88% | 3346 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 92% | 55,434 psi | 85% | 3323 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,015 psi | 89% | 3369 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,146 psi | 89% | 3317 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,071 psi | 85% | 3501 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 55,405 psi | 85% | 3369 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 57% | 2139 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,145 psi | 88% | 3317 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,869 psi | 87% | 3304 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 57,783 psi | 89% | 3337 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,362 psi | 87% | 3307 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 96% | 57,043 psi | 88% | 3432 fps | 98.2% |
| Lovex S065 | <<locked>> | 86% | 58,044 psi | 89% | 3310 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,434 psi | 87% | 3304 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 3327 fps | 100% |
| Norma 204 | <<locked>> | 88% | 58,436 psi | 90% | 3383 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 41,249 psi | 63% | 3163 fps | 97.1% |
| Norma MRP | <<locked>> | 92% | 55,608 psi | 86% | 3422 fps | 99.6% |
| Norma URP | <<locked>> | 86% | 55,579 psi | 86% | 3327 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,160 psi | 89% | 3461 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 57,972 psi | 89% | 3386 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,478 psi | 87% | 3383 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 59% | 2188 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,494 psi | 90% | 3412 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,537 psi | 89% | 3373 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,143 psi | 85% | 3396 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,217 psi | 86% | 3504 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,387 psi | 79% | 3366 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 57,682 psi | 89% | 3297 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,361 psi | 85% | 3297 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 92% | 56,942 psi | 88% | 3373 fps | 99% |
| Rottweil R 907 | <<locked>> | 84% | 56,072 psi | 86% | 3284 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,044 psi | 89% | 3310 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,434 psi | 87% | 3304 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,494 psi | 90% | 3350 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,768 psi | 87% | 3146 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,479 psi | 88% | 3255 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,492 psi | 87% | 3366 fps | 98.9% |
| Somchem S355 | <<locked>> | 82% | 57,087 psi | 88% | 3287 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,116 psi | 88% | 3284 fps | 97.4% |
| Somchem S365 | <<locked>> | 88% | 55,941 psi | 86% | 3330 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,783 psi | 89% | 3346 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 58,146 psi | 89% | 3251 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,319 psi | 88% | 3317 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,072 psi | 88% | 3314 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 56,782 psi | 87% | 3323 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,057 psi | 86% | 3353 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,347 psi | 85% | 3409 fps | 97.4% |
| Vihtavuori N565 | <<locked>> | 98% | 55,767 psi | 86% | 3389 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,753 psi | 87% | 3264 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,317 psi | 85% | 3340 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 58,711 psi | 90% | 3527 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,479 psi | 88% | 3330 fps | 99% |
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% | 36,303 psi | 56% | 2890 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 47,456 psi | 73% | 3169 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 90% | 51,111 psi | 79% | 3323 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 54,346 psi | 84% | 3245 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 41,800 psi | 64% | 3071 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 45,585 psi | 70% | 3186 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 44,208 psi | 68% | 3136 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 35,346 psi | 54% | 2966 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,701 psi | 69% | 3166 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,547 psi | 79% | 3301 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,829 psi | 64% | 3068 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 40,379 psi | 62% | 3074 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,287 psi | 53% | 2913 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,068 psi | 49% | 2864 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,565 psi | 58% | 3064 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 40,059 psi | 62% | 3061 fps | 95% |
| Bofors RP30 | <<locked>> | 94% | 43,207 psi | 66% | 3166 fps | 95.5% |
| Bofors RP5 | <<locked>> | 84% | 40,379 psi | 62% | 3074 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 49,574 psi | 76% | 3163 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 42,366 psi | 65% | 3100 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 48,443 psi | 75% | 3209 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,836 psi | 78% | 3225 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 48,762 psi | 75% | 3196 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 47,688 psi | 73% | 3173 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,540 psi | 65% | 3041 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 40,059 psi | 62% | 3150 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 48,051 psi | 74% | 3232 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 43% | 1919 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,860 psi | 69% | 3081 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,589 psi | 78% | 3189 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 45,034 psi | 69% | 3107 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 47,050 psi | 72% | 3127 fps | 95.3% |
| IMR 7828 SSC | 63.7 gr | 90% | 47,021 psi | 72% | 3235 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 48,646 psi | 75% | 3140 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 47,065 psi | 72% | 3127 fps | 98.6% |
| Lovex S071 | <<locked>> | 82% | 33,634 psi | 52% | 2818 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 45,005 psi | 69% | 3120 fps | 96.4% |
| Norma 217 | <<locked>> | 96% | 36,347 psi | 56% | 3028 fps | 95.1% |
| Norma MRP | 58.8 gr | 80% | 37,086 psi | 57% | 3018 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 46,035 psi | 71% | 3150 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 43,932 psi | 68% | 3173 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 44,933 psi | 69% | 3136 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 86% | 37,144 psi | 57% | 2972 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,761 psi | 44% | 1969 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 54,476 psi | 84% | 3350 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,036 psi | 72% | 3182 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,947 psi | 69% | 3196 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 37,246 psi | 57% | 3058 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 47,906 psi | 74% | 3291 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 54,186 psi | 83% | 3241 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 45,948 psi | 71% | 3110 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 41,379 psi | 64% | 3054 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 49,574 psi | 76% | 3163 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,646 psi | 75% | 3140 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 47,065 psi | 72% | 3127 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 55,027 psi | 85% | 3294 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,548 psi | 82% | 3100 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,805 psi | 74% | 3077 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 41,031 psi | 63% | 3048 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 53,737 psi | 83% | 3232 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 47,166 psi | 73% | 3094 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 43,149 psi | 66% | 3104 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,813 psi | 61% | 2982 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 80% | 51,401 psi | 79% | 3143 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,326 psi | 73% | 3136 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 39,160 psi | 60% | 2956 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,079 psi | 72% | 3146 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 38,551 psi | 59% | 3005 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 88% | 48,486 psi | 75% | 3271 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 45,977 psi | 71% | 3192 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,369 psi | 71% | 3091 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,646 psi | 75% | 3215 fps | 98.8% |
| Winchester StaBALL HD | 58.2 gr | 80% | 30,980 psi | 48% | 2933 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 84% | 41,263 psi | 63% | 3015 fps | 95.5% |
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 6.5 Weatherby RPM loaded with the .264 | 105gr | Impala LW CFN. Winchester StaBALL HD delivers the highest muzzle velocity at 3,527 fps; across all powders the maximum-charge window runs from 2,139 fps to 3,527 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 (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, IMR 7828 SSC, Norma MRP rank at the top here: for 6.5 Weatherby RPM with the .264 | 105gr | Impala LW CFN 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.