Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 120gr | Sierra Pro-Hunter 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% | 55,564 psi | 85% | 3130 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,231 psi | 87% | 3159 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,000 psi | 88% | 3291 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 92% | 58,102 psi | 89% | 3297 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 57,261 psi | 88% | 3228 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,187 psi | 85% | 3232 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,200 psi | 82% | 3189 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,848 psi | 74% | 3146 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,334 psi | 88% | 3222 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,537 psi | 90% | 3232 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,666 psi | 87% | 3212 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,434 psi | 85% | 3228 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,724 psi | 87% | 3192 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,507 psi | 87% | 3264 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,363 psi | 88% | 3287 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,449 psi | 87% | 3182 fps | 96.8% |
| Bofors RP15 | <<locked>> | 96% | 58,305 psi | 90% | 3274 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,275 psi | 87% | 3264 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 55,434 psi | 85% | 3228 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 58,044 psi | 89% | 3159 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,737 psi | 84% | 3219 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 57,885 psi | 89% | 3222 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,420 psi | 87% | 3169 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 58,711 psi | 90% | 3225 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,638 psi | 89% | 3209 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,421 psi | 88% | 3133 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,172 psi | 85% | 3343 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,679 psi | 84% | 3196 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 57% | 2024 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,333 psi | 87% | 3146 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,883 psi | 86% | 3127 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,724 psi | 87% | 3153 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,767 psi | 86% | 3146 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 57,043 psi | 88% | 3271 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,192 psi | 66% | 3038 fps | 97% |
| Lovex S065 | <<locked>> | 84% | 56,681 psi | 87% | 3123 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 58,639 psi | 90% | 3179 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,652 psi | 87% | 3146 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,696 psi | 89% | 3209 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 43,569 psi | 67% | 3068 fps | 99% |
| Norma MRP | <<locked>> | 90% | 55,259 psi | 85% | 3248 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,305 psi | 90% | 3199 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,972 psi | 89% | 3297 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 57,319 psi | 88% | 3205 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,492 psi | 87% | 3222 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,014 psi | 58% | 2067 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,420 psi | 87% | 3182 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,708 psi | 84% | 3212 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,318 psi | 87% | 3340 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,347 psi | 85% | 3284 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 90% | 58,088 psi | 89% | 3189 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 56,202 psi | 86% | 3199 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 58,044 psi | 89% | 3159 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,681 psi | 87% | 3123 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 58,639 psi | 90% | 3179 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,985 psi | 86% | 3077 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,767 psi | 86% | 3196 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 56,101 psi | 86% | 3120 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 55,347 psi | 85% | 3143 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,724 psi | 87% | 3169 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 56,898 psi | 88% | 3064 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,231 psi | 87% | 3130 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,536 psi | 87% | 3150 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 55,477 psi | 85% | 3136 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,317 psi | 85% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,926 psi | 85% | 3241 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 55,303 psi | 85% | 3222 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,289 psi | 87% | 3291 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,869 psi | 86% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,117 psi | 89% | 3222 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,390 psi | 85% | 3284 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,898 psi | 88% | 3169 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% | 36,927 psi | 57% | 2769 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 49,182 psi | 76% | 3045 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,147 psi | 62% | 2946 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 84% | 43,627 psi | 67% | 3015 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 40,901 psi | 63% | 2907 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 41,843 psi | 64% | 2959 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 92% | 40,451 psi | 62% | 2920 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 32,024 psi | 49% | 2746 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,978 psi | 72% | 3048 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,549 psi | 84% | 3173 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,944 psi | 63% | 2904 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,782 psi | 57% | 2838 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,375 psi | 54% | 2795 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,806 psi | 47% | 2700 fps | 96.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,392 psi | 61% | 2956 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,850 psi | 77% | 3054 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 36,651 psi | 56% | 2831 fps | 95.4% |
| Bofors RP30 | <<locked>> | 88% | 37,144 psi | 57% | 2874 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 36,782 psi | 57% | 2838 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 51,155 psi | 79% | 3041 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 38,682 psi | 60% | 2881 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 50,720 psi | 78% | 3097 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 52,997 psi | 82% | 3110 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 41,655 psi | 64% | 2900 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,874 psi | 67% | 2949 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,251 psi | 68% | 2917 fps | 100% |
| Hodgdon Retumbo | 60.4 gr | 84% | 34,389 psi | 53% | 2854 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 50,749 psi | 78% | 3127 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 43% | 1811 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,673 psi | 72% | 2969 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,562 psi | 81% | 3068 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,543 psi | 72% | 2979 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,582 psi | 62% | 2841 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 40,335 psi | 62% | 2936 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,710 psi | 58% | 2904 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 50,067 psi | 77% | 3012 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,631 psi | 75% | 3009 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,807 psi | 49% | 2635 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 46,847 psi | 72% | 3012 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 33,156 psi | 51% | 2805 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,740 psi | 60% | 2913 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 48,051 psi | 74% | 3028 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,089 psi | 62% | 2943 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 46,775 psi | 72% | 3022 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 33,446 psi | 51% | 2743 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,500 psi | 44% | 1850 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,139 psi | 76% | 3064 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,369 psi | 73% | 3084 fps | 100% |
| ReloadSwiss RS 76 | 64.6 gr | 84% | 33,533 psi | 52% | 2825 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,990 psi | 68% | 3064 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,148 psi | 65% | 2887 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,190 psi | 62% | 2884 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 51,155 psi | 79% | 3041 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,067 psi | 77% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,631 psi | 75% | 3009 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,081 psi | 76% | 2956 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,871 psi | 61% | 2877 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 42,888 psi | 66% | 2871 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 45,252 psi | 70% | 2979 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,843 psi | 63% | 2867 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 53,388 psi | 82% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,429 psi | 76% | 3018 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,476 psi | 55% | 2730 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 48,718 psi | 75% | 3018 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,798 psi | 61% | 2884 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,611 psi | 64% | 2969 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 88% | 42,018 psi | 65% | 2959 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 94% | 45,266 psi | 70% | 3077 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,588 psi | 75% | 2969 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,720 psi | 78% | 3097 fps | 99.7% |
| Winchester StaBALL HD | 59 gr | 80% | 31,807 psi | 49% | 2822 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,405 psi | 58% | 2782 fps | 95.9% |
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 | 120gr | Sierra Pro-Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,343 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,343 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 120.0 gr projectile in 0.264" calls for a 1:11.5 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 6.5 Weatherby RPM with the .264 | 120gr | Sierra Pro-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.