Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 131gr | Sellier & Bellot SP bullet and 72 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 Winchester StaBALL HD.
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>> | 92% | 58,088 psi | 89% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,114 psi | 85% | 3018 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,985 psi | 88% | 3159 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 56,028 psi | 86% | 3087 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 57,783 psi | 89% | 3156 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,014 psi | 86% | 3123 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,401 psi | 78% | 3084 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,231 psi | 87% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,535 psi | 85% | 3074 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,073 psi | 89% | 3150 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,854 psi | 86% | 3054 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,738 psi | 86% | 3127 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,362 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,127 psi | 82% | 3143 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,653 psi | 90% | 3114 fps | 98% |
| Bofors RP15 | <<locked>> | 94% | 57,217 psi | 88% | 3136 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 55,347 psi | 85% | 3133 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 58,073 psi | 89% | 3150 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,565 psi | 87% | 3015 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,624 psi | 89% | 3146 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,550 psi | 87% | 3074 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,740 psi | 90% | 3087 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,334 psi | 88% | 3087 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,246 psi | 87% | 3071 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,275 psi | 87% | 2992 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 58,421 psi | 90% | 3274 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,421 psi | 88% | 3117 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 57% | 1936 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,711 psi | 90% | 3061 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,957 psi | 89% | 3038 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,419 psi | 85% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,001 psi | 89% | 3068 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 55,956 psi | 86% | 3136 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,934 psi | 71% | 2989 fps | 98.4% |
| Lovex S065 | <<locked>> | 82% | 55,535 psi | 85% | 2986 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,363 psi | 88% | 3038 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,941 psi | 86% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,101 psi | 86% | 3064 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 46,572 psi | 72% | 3015 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 58,320 psi | 90% | 3173 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,159 psi | 88% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,101 psi | 88% | 3159 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 55,912 psi | 86% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,492 psi | 85% | 3087 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,348 psi | 59% | 1982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,376 psi | 85% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,740 psi | 89% | 3133 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,114 psi | 85% | 3199 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,679 psi | 84% | 3159 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 56,710 psi | 87% | 3051 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 55,085 psi | 85% | 3061 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,565 psi | 87% | 3015 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,535 psi | 85% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,363 psi | 88% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,957 psi | 89% | 2989 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,436 psi | 90% | 3117 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 58,305 psi | 90% | 3045 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 58,218 psi | 90% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,695 psi | 86% | 3035 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,682 psi | 90% | 3041 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,332 psi | 85% | 3015 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 57,972 psi | 89% | 3084 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 84% | 57,928 psi | 89% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,059 psi | 89% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,885 psi | 89% | 3176 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 58,305 psi | 90% | 3159 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 55,361 psi | 85% | 3159 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 3222 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,276 psi | 90% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,811 psi | 87% | 3081 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,766 psi | 84% | 3146 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,579 psi | 86% | 3031 fps | 99.8% |
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% | 38,841 psi | 60% | 2710 fps | 99.2% |
| Accurate 4350 | <<locked>> | 80% | 51,488 psi | 79% | 2959 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,856 psi | 61% | 2822 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 42,815 psi | 66% | 2841 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 38,247 psi | 59% | 2769 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 37,173 psi | 57% | 2743 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 29,588 psi | 46% | 2579 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,168 psi | 76% | 2966 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,801 psi | 66% | 2835 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,740 psi | 60% | 2782 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,536 psi | 58% | 2733 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,401 psi | 50% | 2651 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,785 psi | 64% | 2894 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,313 psi | 76% | 3074 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,747 psi | 75% | 2933 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 36,071 psi | 55% | 2713 fps | 96.2% |
| Bofors RP30 | <<locked>> | 86% | 36,738 psi | 57% | 2759 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 38,740 psi | 60% | 2782 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 53,301 psi | 82% | 2963 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,491 psi | 55% | 2700 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 53,011 psi | 82% | 3018 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,114 psi | 85% | 3028 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 40,857 psi | 63% | 2779 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,089 psi | 62% | 2759 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,456 psi | 71% | 2841 fps | 100% |
| Hodgdon Retumbo | 56.4 gr | 80% | 31,618 psi | 49% | 2674 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 53,229 psi | 82% | 3051 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 43% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,559 psi | 75% | 2894 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,418 psi | 84% | 2982 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,631 psi | 75% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,235 psi | 65% | 2776 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 80% | 36,869 psi | 57% | 2746 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,449 psi | 58% | 2799 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,141 psi | 80% | 2930 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,560 psi | 78% | 2927 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,562 psi | 52% | 2582 fps | 98% |
| Norma 204 | <<locked>> | 80% | 48,994 psi | 75% | 2943 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,748 psi | 47% | 2638 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 40,799 psi | 63% | 2854 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 50,154 psi | 77% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,738 psi | 57% | 2756 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 48,965 psi | 75% | 2946 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,779 psi | 50% | 2628 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 44% | 1775 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,605 psi | 79% | 2986 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,966 psi | 77% | 3012 fps | 100% |
| ReloadSwiss RS 76 | 60.4 gr | 80% | 30,734 psi | 47% | 2644 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,234 psi | 62% | 2874 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 43,932 psi | 68% | 2818 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,337 psi | 65% | 2825 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 80% | 53,301 psi | 82% | 2963 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,141 psi | 80% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,560 psi | 78% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,923 psi | 78% | 2877 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,003 psi | 65% | 2818 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 44,846 psi | 69% | 2805 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 47,558 psi | 73% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,801 psi | 66% | 2802 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 51,576 psi | 79% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,231 psi | 57% | 2671 fps | 97.4% |
| Vihtavuori N170 | <<locked>> | 96% | 54,375 psi | 84% | 3025 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 50,836 psi | 78% | 2940 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,858 psi | 64% | 2812 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,712 psi | 63% | 2841 fps | 96% |
| Vihtavuori N565 | <<locked>> | 84% | 38,653 psi | 59% | 2776 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 90% | 41,510 psi | 64% | 2890 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 48,791 psi | 75% | 3081 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,865 psi | 78% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,011 psi | 82% | 3018 fps | 100% |
| Winchester StaBALL HD | 57.9 gr | 80% | 34,374 psi | 53% | 2776 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,262 psi | 60% | 2726 fps | 97.4% |
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 72 powders for 6.5 Weatherby RPM loaded with the .264 | 131gr | Sellier & Bellot SP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,274 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,274 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 131.0 gr projectile in 0.264" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, 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, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 6.5 Weatherby RPM with the .264 | 131gr | Sellier & Bellot SP 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.