Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 124gr | Hammer Hunter bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 76 and Hodgdon Retumbo.
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% | 57,783 psi | 89% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,911 psi | 84% | 3104 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,608 psi | 87% | 3238 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 55,999 psi | 86% | 3169 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 57,928 psi | 89% | 3241 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 3133 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,311 psi | 71% | 3084 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,347 psi | 87% | 3166 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,130 psi | 86% | 3166 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,305 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,637 psi | 86% | 3156 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,928 psi | 89% | 3235 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,303 psi | 85% | 3133 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,056 psi | 85% | 3205 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,970 psi | 86% | 3232 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,506 psi | 85% | 3130 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 56,782 psi | 87% | 3212 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,752 psi | 84% | 3205 fps | 99.4% |
| Bofors RP5 | <<locked>> | 94% | 57,928 psi | 89% | 3235 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 57,029 psi | 88% | 3104 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,406 psi | 88% | 3225 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,666 psi | 87% | 3163 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,506 psi | 85% | 3117 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 57,566 psi | 89% | 3173 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,478 psi | 87% | 3153 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,405 psi | 87% | 3081 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,682 psi | 89% | 3346 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,667 psi | 89% | 3205 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 57% | 1982 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,274 psi | 85% | 3091 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,624 psi | 90% | 3130 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,390 psi | 85% | 3094 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,218 psi | 90% | 3150 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 55,608 psi | 86% | 3212 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,684 psi | 64% | 2972 fps | 96.8% |
| Lovex S065 | <<locked>> | 84% | 55,593 psi | 86% | 3068 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,363 psi | 88% | 3120 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,013 psi | 85% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,376 psi | 87% | 3153 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 42,018 psi | 65% | 3005 fps | 98.9% |
| Norma MRP | <<locked>> | 92% | 58,030 psi | 89% | 3255 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,014 psi | 88% | 3140 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,521 psi | 87% | 3238 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 55,970 psi | 86% | 3150 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,100 psi | 85% | 3163 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 58% | 2031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,129 psi | 85% | 3127 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,725 psi | 89% | 3219 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,795 psi | 84% | 3281 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,809 psi | 83% | 3225 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 82% | 58,552 psi | 90% | 3100 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 57,116 psi | 88% | 3136 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 55,071 psi | 85% | 3143 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 57,029 psi | 88% | 3104 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,593 psi | 86% | 3068 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,363 psi | 88% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,088 psi | 89% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,479 psi | 90% | 3077 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,494 psi | 90% | 3202 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 57,870 psi | 89% | 3091 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 54,969 psi | 85% | 3068 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 57,812 psi | 89% | 3140 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,593 psi | 86% | 3114 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,796 psi | 86% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,201 psi | 85% | 3077 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,317 psi | 85% | 3094 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 58,088 psi | 89% | 3136 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,377 psi | 88% | 3163 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,711 psi | 89% | 3255 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 98% | 57,522 psi | 88% | 3225 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,694 psi | 84% | 3228 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,581 psi | 90% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,942 psi | 88% | 3166 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,856 psi | 89% | 3281 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,405 psi | 85% | 3107 fps | 99.6% |
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% | 35,462 psi | 55% | 2707 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 47,732 psi | 73% | 2982 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,438 psi | 65% | 2959 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 39,856 psi | 61% | 2851 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 40,741 psi | 63% | 2904 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 92% | 39,436 psi | 61% | 2867 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 30,908 psi | 48% | 2684 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,248 psi | 62% | 2851 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,818 psi | 70% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,243 psi | 82% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,885 psi | 61% | 2844 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,621 psi | 55% | 2779 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,316 psi | 53% | 2740 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,660 psi | 46% | 2641 fps | 96.7% |
| Alliant Reloder-26 | 60.1 gr | 80% | 37,956 psi | 58% | 2890 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,994 psi | 75% | 3009 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 35,520 psi | 55% | 2772 fps | 95.4% |
| Bofors RP30 | <<locked>> | 90% | 38,508 psi | 59% | 2881 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 35,621 psi | 55% | 2779 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 50,270 psi | 77% | 2992 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 37,623 psi | 58% | 2825 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 49,400 psi | 76% | 3038 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,996 psi | 80% | 3054 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 40,698 psi | 63% | 2848 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,743 psi | 66% | 2894 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,221 psi | 66% | 2864 fps | 100% |
| Hodgdon Retumbo | 59 gr | 84% | 33,185 psi | 51% | 2792 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 49,617 psi | 76% | 3071 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 43% | 1775 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,672 psi | 70% | 2917 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,590 psi | 79% | 3015 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 45,281 psi | 70% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,595 psi | 61% | 2789 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 39,160 psi | 60% | 2877 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,059 psi | 60% | 2910 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 49,081 psi | 76% | 2959 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,398 psi | 73% | 2949 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,284 psi | 47% | 2569 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 45,861 psi | 71% | 2959 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 31,720 psi | 49% | 2736 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 37,376 psi | 58% | 2851 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 46,833 psi | 72% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,885 psi | 60% | 2884 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 45,687 psi | 70% | 2966 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 32,213 psi | 50% | 2684 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,964 psi | 74% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,137 psi | 71% | 3028 fps | 100% |
| ReloadSwiss RS 76 | 63.1 gr | 84% | 32,227 psi | 50% | 2759 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,337 psi | 65% | 2999 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 54,795 psi | 84% | 3045 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,104 psi | 63% | 2831 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 39,204 psi | 60% | 2831 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,270 psi | 77% | 2992 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,081 psi | 76% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,398 psi | 73% | 2949 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,360 psi | 84% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,964 psi | 74% | 2904 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,870 psi | 60% | 2825 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 54,491 psi | 84% | 3038 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,771 psi | 64% | 2815 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 43,947 psi | 68% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,624 psi | 61% | 2808 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 52,199 psi | 80% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,298 psi | 74% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,345 psi | 53% | 2671 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,572 psi | 73% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,363 psi | 59% | 2818 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 40,408 psi | 62% | 2913 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 88% | 40,495 psi | 62% | 2897 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 94% | 43,816 psi | 67% | 3018 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,471 psi | 73% | 2917 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,661 psi | 76% | 3041 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,501 psi | 47% | 2759 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,318 psi | 56% | 2730 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 75 powders for 6.5 Weatherby RPM loaded with the .264 | 124gr | Hammer Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,346 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,346 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 124.0 gr projectile in 0.264" calls for a 1:8.0 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. Alliant Reloder-26, ReloadSwiss RS 76, Hodgdon Retumbo rank at the top here: for 6.5 Weatherby RPM with the .264 | 124gr | Hammer Hunter 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.