Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 120gr | Impala RNFP KO bullet and 70 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 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>> | 92% | 57,551 psi | 89% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,421 psi | 90% | 3173 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,666 psi | 86% | 3235 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 58,131 psi | 89% | 3222 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 56,086 psi | 86% | 3232 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,331 psi | 84% | 3189 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,110 psi | 76% | 3156 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,450 psi | 90% | 3222 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,972 psi | 89% | 3215 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,652 psi | 87% | 3232 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,088 psi | 89% | 3199 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,435 psi | 88% | 3264 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,926 psi | 85% | 3238 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,435 psi | 88% | 3179 fps | 96.8% |
| Bofors RP15 | <<locked>> | 94% | 55,825 psi | 86% | 3215 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,711 psi | 89% | 3274 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 56,652 psi | 87% | 3232 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 56,057 psi | 86% | 3104 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 56,043 psi | 86% | 3219 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 82% | 55,550 psi | 85% | 3163 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,827 psi | 89% | 3173 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 55,869 psi | 86% | 3159 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 58,523 psi | 90% | 3202 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,434 psi | 85% | 3084 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,507 psi | 87% | 3350 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,898 psi | 86% | 3199 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,594 psi | 58% | 2008 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,566 psi | 89% | 3146 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,130 psi | 88% | 3123 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,262 psi | 90% | 3156 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,710 psi | 87% | 3143 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 58,015 psi | 89% | 3271 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,078 psi | 69% | 3064 fps | 97.3% |
| Lovex S065 | <<locked>> | 84% | 58,421 psi | 90% | 3130 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,782 psi | 87% | 3127 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,477 psi | 85% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,668 psi | 90% | 3205 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 45,382 psi | 70% | 3094 fps | 99.2% |
| Norma MRP | <<locked>> | 90% | 56,797 psi | 87% | 3258 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,217 psi | 86% | 3150 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,259 psi | 85% | 3235 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 58,407 psi | 90% | 3205 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,841 psi | 89% | 3225 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,435 psi | 59% | 2054 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,146 psi | 89% | 3192 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,956 psi | 86% | 3219 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,290 psi | 88% | 3343 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 3297 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 55,695 psi | 86% | 3130 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 57,696 psi | 89% | 3205 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 56,057 psi | 86% | 3104 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,421 psi | 90% | 3130 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,782 psi | 87% | 3127 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,363 psi | 88% | 3074 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,246 psi | 88% | 3202 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 57,261 psi | 88% | 3120 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 57,101 psi | 88% | 3153 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,305 psi | 90% | 3176 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 58,291 psi | 90% | 3064 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,624 psi | 89% | 3133 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,740 psi | 89% | 3150 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 57,174 psi | 88% | 3143 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,406 psi | 88% | 3182 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,362 psi | 87% | 3251 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 56,927 psi | 88% | 3235 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,624 psi | 89% | 3301 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,913 psi | 88% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,825 psi | 86% | 3166 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,608 psi | 87% | 3294 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,030 psi | 89% | 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% | 39,610 psi | 61% | 2808 fps | 98.7% |
| Accurate 4350 | <<locked>> | 80% | 51,547 psi | 79% | 3061 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 45,498 psi | 70% | 3038 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 42,424 psi | 65% | 2923 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 40,741 psi | 63% | 2913 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 90% | 39,595 psi | 61% | 2877 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 86% | 32,024 psi | 49% | 2723 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,254 psi | 74% | 3054 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,554 psi | 65% | 2920 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,740 psi | 60% | 2867 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,478 psi | 58% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,822 psi | 50% | 2743 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,379 psi | 64% | 2986 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,821 psi | 78% | 3058 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 36,230 psi | 56% | 2802 fps | 95.2% |
| Bofors RP30 | <<locked>> | 88% | 39,160 psi | 60% | 2907 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 38,740 psi | 60% | 2867 fps | 96.3% |
| Bofors RP7 | <<locked>> | 80% | 52,721 psi | 81% | 3048 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 86% | 37,884 psi | 58% | 2838 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 52,170 psi | 80% | 3104 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 54,317 psi | 84% | 3114 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 43,192 psi | 66% | 2913 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 42,583 psi | 66% | 2900 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,064 psi | 71% | 2930 fps | 100% |
| Hodgdon Retumbo | 58.3 gr | 84% | 36,143 psi | 56% | 2887 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 52,156 psi | 80% | 3133 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,210 psi | 43% | 1798 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,095 psi | 74% | 2976 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,708 psi | 83% | 3068 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 48,501 psi | 75% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,076 psi | 65% | 2854 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 41,989 psi | 65% | 2956 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 39,813 psi | 61% | 2943 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 51,953 psi | 80% | 3025 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,444 psi | 78% | 3018 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 34,548 psi | 53% | 2684 fps | 97.4% |
| Norma 204 | <<locked>> | 80% | 48,457 psi | 75% | 3025 fps | 98.4% |
| Norma 217 | <<locked>> | 90% | 33,199 psi | 51% | 2789 fps | 95.4% |
| Norma MRP | 57.7 gr | 80% | 40,611 psi | 62% | 2943 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 49,705 psi | 76% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 39,146 psi | 60% | 2897 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 48,457 psi | 75% | 3035 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 33,112 psi | 51% | 2713 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,008 psi | 45% | 1844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,010 psi | 78% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,863 psi | 75% | 3097 fps | 100% |
| ReloadSwiss RS 76 | 61 gr | 82% | 33,388 psi | 51% | 2799 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 42,598 psi | 66% | 3018 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 43,671 psi | 67% | 2897 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 42,003 psi | 65% | 2904 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 52,721 psi | 81% | 3048 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,953 psi | 80% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,444 psi | 78% | 3018 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,908 psi | 78% | 2969 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,655 psi | 64% | 2900 fps | 97.2% |
| Somchem S361 | <<locked>> | 80% | 44,643 psi | 69% | 2884 fps | 95.9% |
| Somchem S365 | <<locked>> | 80% | 47,152 psi | 73% | 2995 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,960 psi | 66% | 2894 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 80% | 54,984 psi | 85% | 3015 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,039 psi | 79% | 3025 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,405 psi | 58% | 2756 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 50,560 psi | 78% | 3035 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,148 psi | 65% | 2913 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 43,207 psi | 66% | 2989 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 86% | 41,336 psi | 64% | 2927 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 46,833 psi | 72% | 3097 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,053 psi | 77% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,388 psi | 81% | 3107 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,968 psi | 52% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,160 psi | 60% | 2805 fps | 96.3% |
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 70 powders for 6.5 Weatherby RPM loaded with the .264 | 120gr | Impala RNFP KO. Hodgdon Retumbo delivers the highest muzzle velocity at 3,350 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,350 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 120.0 gr projectile in 0.264" calls for a 1:9.0 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, Norma MRP rank at the top here: for 6.5 Weatherby RPM with the .264 | 120gr | Impala RNFP KO 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.