Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 156gr | Norma VULKAN bullet and 60 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 57,188 psi | 88% | 2799 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,347 psi | 85% | 2907 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,173 psi | 86% | 2917 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 86% | 58,407 psi | 90% | 2887 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,942 psi | 88% | 2907 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 55,448 psi | 85% | 2887 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,651 psi | 86% | 3012 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 58,175 psi | 89% | 2963 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 58,769 psi | 90% | 2884 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 58,769 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,726 psi | 90% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,131 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,377 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,477 psi | 85% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,593 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,985 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,261 psi | 88% | 2989 fps | 99.1% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,678 psi | 81% | 2913 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,290 psi | 88% | 2871 fps | 99.1% |
| Bofors RP15 | <<locked>> | 90% | 56,565 psi | 87% | 2890 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 55,550 psi | 85% | 2904 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,377 psi | 88% | 2900 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,029 psi | 88% | 2907 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 55,999 psi | 86% | 2841 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,755 psi | 90% | 2881 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,347 psi | 85% | 2736 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 58,726 psi | 90% | 3028 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,855 psi | 58% | 1781 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,043 psi | 88% | 2802 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,740 psi | 89% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,260 psi | 87% | 2815 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 55,376 psi | 85% | 2890 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 58,581 psi | 90% | 2825 fps | 96.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,330 psi | 82% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 55,550 psi | 85% | 2776 fps | 100% |
| Norma 204 | <<locked>> | 82% | 58,494 psi | 90% | 2867 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,317 psi | 84% | 2910 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,406 psi | 88% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,463 psi | 87% | 2913 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 58,508 psi | 90% | 2858 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 54,694 psi | 84% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,740 psi | 60% | 1821 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,317 psi | 85% | 2959 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 58,711 psi | 90% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 55,434 psi | 85% | 2805 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 57,841 psi | 89% | 2867 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 46,122 psi | 71% | 2720 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,450 psi | 88% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,724 psi | 87% | 2799 fps | 99.9% |
| Somchem S365 | <<locked>> | 82% | 57,305 psi | 88% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,117 psi | 89% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,972 psi | 89% | 2822 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,058 psi | 88% | 2858 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 86% | 57,479 psi | 88% | 2831 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,826 psi | 87% | 2923 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 92% | 57,711 psi | 89% | 2917 fps | 100% |
| Vihtavuori N568 | <<locked>> | 94% | 55,216 psi | 85% | 2930 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 96% | 56,463 psi | 87% | 2995 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,477 psi | 85% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,914 psi | 89% | 2838 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% | 43,903 psi | 68% | 2595 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 48,124 psi | 74% | 2785 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 80% | 45,571 psi | 70% | 2733 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 47,906 psi | 74% | 2720 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 43,134 psi | 66% | 2674 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 32,213 psi | 50% | 2425 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 92% | 41,611 psi | 64% | 2730 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 29,559 psi | 45% | 2398 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,240 psi | 74% | 2720 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,240 psi | 74% | 2720 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 55,172 psi | 85% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,790 psi | 74% | 2713 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,888 psi | 68% | 2677 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,728 psi | 66% | 2608 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,956 psi | 57% | 2559 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,501 psi | 75% | 2779 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 39,624 psi | 61% | 2664 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 94% | 42,134 psi | 65% | 2713 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,626 psi | 64% | 2589 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 40,886 psi | 63% | 2615 fps | 99.1% |
| Bofors RP30 | <<locked>> | 80% | 34,505 psi | 53% | 2500 fps | 97.1% |
| Bofors RP5 | <<locked>> | 80% | 43,888 psi | 68% | 2677 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 35,070 psi | 54% | 2500 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 45,774 psi | 70% | 2667 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,918 psi | 69% | 2654 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,750 psi | 80% | 2687 fps | 100% |
| Hodgdon Retumbo | 55.3 gr | 80% | 36,143 psi | 56% | 2608 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,326 psi | 44% | 1588 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,476 psi | 82% | 2749 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,331 psi | 84% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,630 psi | 72% | 2654 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 42,061 psi | 65% | 2657 fps | 98.7% |
| IMR 7977 Enduron | <<locked>> | 90% | 51,372 psi | 79% | 2707 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 84% | 31,038 psi | 48% | 2431 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 37,898 psi | 58% | 2480 fps | 99.9% |
| Norma 204 | <<locked>> | 80% | 54,520 psi | 84% | 2808 fps | 100% |
| Norma 217 | <<locked>> | 80% | 27,325 psi | 42% | 2346 fps | 96% |
| Norma MRP | <<locked>> | 80% | 46,644 psi | 72% | 2746 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,003 psi | 65% | 2671 fps | 99% |
| Ramshot Hunter | <<locked>> | 80% | 54,592 psi | 84% | 2805 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,927 psi | 58% | 2552 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,167 psi | 45% | 1631 fps | 100% |
| ReloadSwiss RS 76 | 59.2 gr | 80% | 35,302 psi | 54% | 2585 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 34,824 psi | 54% | 2543 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 48,849 psi | 75% | 2697 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 47,529 psi | 73% | 2707 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 43,105 psi | 66% | 2664 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,181 psi | 73% | 2703 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 49,588 psi | 76% | 2687 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 53,577 psi | 82% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,834 psi | 74% | 2677 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 41,843 psi | 64% | 2562 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 46,760 psi | 72% | 2684 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 47,514 psi | 73% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,296 psi | 71% | 2743 fps | 99% |
| Vihtavuori N565 | <<locked>> | 80% | 38,551 psi | 59% | 2569 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 36,201 psi | 56% | 2562 fps | 95.5% |
| Vihtavuori N570 | 63.2 gr | 88% | 42,569 psi | 65% | 2740 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,089 psi | 63% | 2674 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,193 psi | 68% | 2618 fps | 99.6% |
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 60 powders for 6.5 Weatherby RPM loaded with the .264 | 156gr | Norma VULKAN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,028 fps. ADI AR 2218 gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.264" calls for a 1:10.0 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 6.5 Weatherby RPM with the .264 | 156gr | Norma VULKAN 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.