Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 120gr | Lapua TRX N583 bullet and 76 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% | 55,637 psi | 86% | 3123 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,884 psi | 88% | 3163 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 58,160 psi | 89% | 3291 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 57,638 psi | 89% | 3117 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,624 psi | 89% | 3222 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 55,463 psi | 85% | 3225 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,937 psi | 77% | 3114 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,585 psi | 69% | 3074 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,711 psi | 89% | 3222 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,042 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,261 psi | 88% | 3212 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,506 psi | 85% | 3222 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,869 psi | 87% | 3192 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,086 psi | 86% | 3255 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,624 psi | 89% | 3294 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,232 psi | 88% | 3179 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 58,233 psi | 90% | 3264 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,199 psi | 80% | 3192 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 55,506 psi | 85% | 3222 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 55,521 psi | 85% | 3107 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,129 psi | 85% | 3212 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 58,508 psi | 90% | 3219 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,493 psi | 88% | 3176 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 55,535 psi | 85% | 3163 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,030 psi | 89% | 3202 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,928 psi | 89% | 3133 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,143 psi | 85% | 3337 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,172 psi | 85% | 3196 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 57% | 1995 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,043 psi | 88% | 3146 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,971 psi | 88% | 3130 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 57,290 psi | 88% | 3153 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,289 psi | 87% | 3143 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 57,261 psi | 88% | 3271 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 57,493 psi | 88% | 3127 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,854 psi | 86% | 3123 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 3143 fps | 100% |
| Norma 204 | <<locked>> | 88% | 58,349 psi | 90% | 3209 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 40,205 psi | 62% | 2992 fps | 98% |
| Norma MRP | <<locked>> | 92% | 55,521 psi | 85% | 3248 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,288 psi | 85% | 3143 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,001 psi | 89% | 3287 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 57,841 psi | 89% | 3205 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,536 psi | 87% | 3215 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,913 psi | 58% | 2044 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,624 psi | 90% | 3222 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,971 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,259 psi | 85% | 3219 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,202 psi | 86% | 3333 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,778 psi | 78% | 3202 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 56,913 psi | 88% | 3107 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,332 psi | 85% | 3133 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 56,724 psi | 87% | 3199 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 55,521 psi | 85% | 3107 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,493 psi | 88% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,854 psi | 86% | 3123 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,407 psi | 90% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,608 psi | 87% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,826 psi | 87% | 3077 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,275 psi | 87% | 3196 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 56,507 psi | 87% | 3100 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,869 psi | 87% | 3120 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 55,637 psi | 86% | 3143 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,406 psi | 88% | 3169 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,653 psi | 89% | 3068 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,014 psi | 88% | 3133 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,898 psi | 88% | 3146 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,275 psi | 87% | 3143 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,506 psi | 85% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,259 psi | 85% | 3241 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 98% | 55,042 psi | 85% | 3215 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,909 psi | 80% | 3209 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,536 psi | 87% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 58,784 psi | 90% | 3225 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,636 psi | 84% | 3281 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,348 psi | 88% | 3163 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% | 34,548 psi | 53% | 2707 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 46,267 psi | 71% | 2982 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,874 psi | 67% | 3015 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 53,983 psi | 83% | 3061 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,493 psi | 59% | 2844 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 42,148 psi | 65% | 2959 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 40,640 psi | 63% | 2913 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 32,024 psi | 49% | 2736 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,237 psi | 68% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,358 psi | 79% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,580 psi | 59% | 2838 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,941 psi | 57% | 2838 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,257 psi | 51% | 2740 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,863 psi | 44% | 2631 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,390 psi | 56% | 2884 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,838 psi | 83% | 3120 fps | 95.8% |
| Bofors RP15 | <<locked>> | 84% | 36,666 psi | 56% | 2828 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 39,668 psi | 61% | 2933 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 36,941 psi | 57% | 2838 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,834 psi | 75% | 2986 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,928 psi | 60% | 2877 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 48,080 psi | 74% | 3038 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 50,372 psi | 77% | 3051 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 45,092 psi | 69% | 2966 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,208 psi | 68% | 2946 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,872 psi | 64% | 2867 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,796 psi | 57% | 2917 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 47,558 psi | 73% | 3061 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 43% | 1788 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,280 psi | 68% | 2910 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,285 psi | 77% | 3015 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 44,092 psi | 68% | 2927 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,700 psi | 67% | 2900 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 40,698 psi | 63% | 2936 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 47,921 psi | 74% | 2963 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,079 psi | 71% | 2949 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 29,820 psi | 46% | 2575 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 44,411 psi | 68% | 2953 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 32,866 psi | 51% | 2792 fps | 95% |
| Norma MRP | 56.6 gr | 80% | 36,100 psi | 56% | 2844 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 45,295 psi | 70% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,292 psi | 62% | 2940 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 44,251 psi | 68% | 2966 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 84% | 33,518 psi | 52% | 2740 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 44% | 1831 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 54,607 psi | 84% | 3166 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,238 psi | 71% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,527 psi | 69% | 3025 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,562 psi | 52% | 2818 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,642 psi | 67% | 3054 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 53,156 psi | 82% | 3048 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,001 psi | 62% | 2825 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,898 psi | 58% | 2822 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 48,834 psi | 75% | 2986 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,921 psi | 74% | 2963 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,079 psi | 71% | 2949 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,665 psi | 84% | 3110 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,171 psi | 82% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,920 psi | 72% | 2907 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,579 psi | 58% | 2818 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 53,142 psi | 82% | 3048 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,468 psi | 67% | 2871 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 42,337 psi | 65% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,508 psi | 59% | 2805 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 50,662 psi | 78% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,731 psi | 72% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,694 psi | 55% | 2730 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,180 psi | 71% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,304 psi | 57% | 2825 fps | 99.5% |
| Vihtavuori N560 | 59.4 gr | 84% | 41,727 psi | 64% | 2969 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 41,989 psi | 65% | 2956 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 45,078 psi | 69% | 3071 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,064 psi | 71% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,080 psi | 74% | 3038 fps | 99.4% |
| Winchester StaBALL HD | 56 gr | 80% | 29,530 psi | 45% | 2753 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,811 psi | 58% | 2789 fps | 95.7% |
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 76 powders for 6.5 Weatherby RPM loaded with the .264 | 120gr | Lapua TRX N583. Hodgdon Retumbo delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,337 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 120.0 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, 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 | 120gr | Lapua TRX N583 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.