Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 123gr | Warner Tool Co. Flat Line bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 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% | 56,260 psi | 87% | 3100 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,667 psi | 89% | 3140 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,940 psi | 85% | 3202 fps | 98% |
| ADI AR 2208 | <<locked>> | 82% | 58,175 psi | 89% | 3091 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,450 psi | 90% | 3202 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 56,028 psi | 86% | 3205 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,285 psi | 77% | 3094 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,962 psi | 69% | 3051 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,479 psi | 90% | 3196 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,782 psi | 86% | 3153 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,783 psi | 89% | 3189 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,101 psi | 86% | 3199 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,508 psi | 88% | 3166 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,826 psi | 87% | 3232 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 58,146 psi | 89% | 3264 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,769 psi | 89% | 3159 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 55,274 psi | 85% | 3182 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,924 psi | 81% | 3173 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 56,101 psi | 86% | 3199 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 56,057 psi | 86% | 3081 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,521 psi | 85% | 3189 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,390 psi | 85% | 3136 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,856 psi | 89% | 3150 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 56,043 psi | 86% | 3140 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,595 psi | 90% | 3182 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,711 psi | 90% | 3110 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,593 psi | 86% | 3310 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,028 psi | 86% | 3176 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 57% | 1975 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,711 psi | 89% | 3123 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,276 psi | 88% | 3104 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,711 psi | 89% | 3127 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,043 psi | 88% | 3123 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 57,943 psi | 89% | 3248 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,509 psi | 62% | 2943 fps | 96% |
| Lovex S065 | <<locked>> | 86% | 58,088 psi | 89% | 3100 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,231 psi | 87% | 3097 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,377 psi | 88% | 3117 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,969 psi | 85% | 3120 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,741 psi | 63% | 2976 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 56,173 psi | 86% | 3225 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,709 psi | 86% | 3117 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,798 psi | 90% | 3268 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 88% | 58,320 psi | 90% | 3182 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,348 psi | 88% | 3196 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 58% | 2018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,508 psi | 88% | 3159 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,825 psi | 86% | 3192 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,797 psi | 87% | 3310 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,648 psi | 79% | 3186 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,479 psi | 88% | 3081 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,738 psi | 86% | 3107 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 57,276 psi | 88% | 3176 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 56,057 psi | 86% | 3081 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,088 psi | 89% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,231 psi | 87% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,087 psi | 88% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,450 psi | 88% | 3054 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,826 psi | 87% | 3169 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 57,029 psi | 88% | 3074 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,392 psi | 88% | 3097 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,434 psi | 87% | 3120 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,943 psi | 89% | 3146 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,262 psi | 90% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,696 psi | 89% | 3110 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,479 psi | 88% | 3123 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,739 psi | 87% | 3114 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,072 psi | 86% | 3143 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,883 psi | 86% | 3219 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 55,796 psi | 86% | 3192 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,736 psi | 81% | 3192 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,305 psi | 88% | 3061 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,680 psi | 86% | 3143 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,579 psi | 86% | 3255 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,943 psi | 89% | 3143 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% | 34,983 psi | 54% | 2690 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 46,818 psi | 72% | 2959 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,382 psi | 68% | 2995 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 54,447 psi | 84% | 3035 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,943 psi | 60% | 2825 fps | 96.2% |
| ADI AR 2213 | <<locked>> | 84% | 39,842 psi | 61% | 2874 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 94% | 41,278 psi | 64% | 2900 fps | 96% |
| ADI AR 2225 | <<locked>> | 90% | 32,518 psi | 50% | 2730 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,744 psi | 69% | 2966 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,025 psi | 80% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,015 psi | 60% | 2822 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,449 psi | 58% | 2822 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,678 psi | 52% | 2723 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,196 psi | 45% | 2618 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,985 psi | 57% | 2871 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,082 psi | 79% | 3038 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 37,188 psi | 57% | 2812 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 37,565 psi | 58% | 2854 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 37,449 psi | 58% | 2822 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 49,298 psi | 76% | 2963 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 39,320 psi | 60% | 2858 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 48,399 psi | 74% | 3012 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,894 psi | 78% | 3028 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,627 psi | 66% | 2884 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,785 psi | 64% | 2864 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,351 psi | 65% | 2844 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,882 psi | 54% | 2838 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 48,240 psi | 74% | 3041 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 43% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,701 psi | 69% | 2890 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,705 psi | 78% | 2989 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,585 psi | 69% | 2904 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,553 psi | 64% | 2825 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 86% | 41,075 psi | 63% | 2917 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,942 psi | 58% | 2881 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 48,385 psi | 74% | 2940 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,557 psi | 72% | 2927 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,168 psi | 46% | 2559 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 44,947 psi | 69% | 2933 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 33,257 psi | 51% | 2779 fps | 95.6% |
| Norma MRP | 56.2 gr | 80% | 36,637 psi | 56% | 2831 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 45,774 psi | 70% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,072 psi | 59% | 2854 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 44,802 psi | 69% | 2943 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,881 psi | 52% | 2723 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,456 psi | 44% | 1808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,833 psi | 72% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,918 psi | 69% | 2999 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,705 psi | 49% | 2733 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,353 psi | 68% | 3041 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 53,722 psi | 83% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,437 psi | 62% | 2805 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,377 psi | 59% | 2805 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 49,298 psi | 76% | 2963 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,385 psi | 74% | 2940 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,557 psi | 72% | 2927 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,577 psi | 82% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,181 psi | 73% | 2881 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,043 psi | 59% | 2802 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 53,650 psi | 83% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,034 psi | 68% | 2854 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 42,859 psi | 66% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,957 psi | 60% | 2789 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 51,169 psi | 79% | 2933 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,253 psi | 73% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,721 psi | 52% | 2651 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 46,717 psi | 72% | 2943 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,782 psi | 58% | 2805 fps | 99.7% |
| Vihtavuori N560 | 59 gr | 84% | 42,337 psi | 65% | 2953 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 90% | 42,496 psi | 65% | 2940 fps | 96% |
| Vihtavuori N568 | <<locked>> | 96% | 45,455 psi | 70% | 3048 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,398 psi | 71% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,617 psi | 75% | 3015 fps | 99.5% |
| Winchester StaBALL HD | 55.6 gr | 80% | 29,936 psi | 46% | 2740 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,679 psi | 55% | 2707 fps | 95.2% |
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 | 123gr | Warner Tool Co. Flat Line. Hodgdon Retumbo delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,310 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 123.0 gr projectile in 0.264" calls for a 1:7.5 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, Vihtavuori N560, Norma MRP rank at the top here: for 6.5 Weatherby RPM with the .264 | 123gr | Warner Tool Co. Flat Line 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.