Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 115gr | Hammer Power bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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>> | 96% | 57,537 psi | 89% | 3222 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,984 psi | 85% | 3205 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,681 psi | 87% | 3330 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 82% | 56,391 psi | 87% | 3169 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,231 psi | 87% | 3268 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 58,059 psi | 89% | 3337 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,443 psi | 75% | 3146 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,018 psi | 66% | 3097 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,537 psi | 89% | 3192 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,217 psi | 86% | 3271 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,580 psi | 89% | 3284 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,796 psi | 86% | 3255 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,856 psi | 89% | 3327 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,100 psi | 85% | 3235 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,404 psi | 84% | 3294 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,695 psi | 86% | 3330 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,202 psi | 86% | 3225 fps | 96% |
| Bofors RP15 | <<locked>> | 98% | 56,695 psi | 87% | 3307 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 58,523 psi | 90% | 3205 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,343 psi | 77% | 3219 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 57,856 psi | 89% | 3327 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 57,624 psi | 89% | 3209 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,519 psi | 82% | 3245 fps | 99% |
| Hodgdon H414 | <<locked>> | 86% | 57,130 psi | 88% | 3268 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,159 psi | 86% | 3222 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 57,841 psi | 89% | 3264 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,753 psi | 87% | 3248 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,304 psi | 87% | 3179 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,388 psi | 82% | 3366 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 57,943 psi | 89% | 3307 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 57% | 2047 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,869 psi | 86% | 3192 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,593 psi | 86% | 3176 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 55,521 psi | 85% | 3196 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 58,711 psi | 90% | 3245 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 96% | 55,521 psi | 85% | 3304 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 56,072 psi | 86% | 3173 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,754 psi | 89% | 3222 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,955 psi | 85% | 3182 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,927 psi | 88% | 3251 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,435 psi | 59% | 3002 fps | 97.1% |
| Norma MRP | <<locked>> | 94% | 57,769 psi | 89% | 3350 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,246 psi | 88% | 3245 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,579 psi | 87% | 3330 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 56,347 psi | 87% | 3251 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,781 psi | 84% | 3251 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 58% | 2093 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 58,436 psi | 90% | 3219 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,000 psi | 88% | 3271 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,347 psi | 85% | 3232 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,885 psi | 89% | 3323 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,331 psi | 84% | 3366 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,081 psi | 76% | 3225 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 82% | 55,114 psi | 85% | 3150 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,522 psi | 88% | 3235 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 55,158 psi | 85% | 3238 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 57,624 psi | 89% | 3209 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,072 psi | 86% | 3173 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,754 psi | 89% | 3222 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,971 psi | 88% | 3215 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 58,668 psi | 90% | 3064 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,317 psi | 85% | 3120 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 58,653 psi | 90% | 3301 fps | 99.6% |
| Somchem S355 | <<locked>> | 84% | 58,639 psi | 90% | 3202 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,521 psi | 85% | 3163 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 57,711 psi | 89% | 3245 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,724 psi | 86% | 3209 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,275 psi | 87% | 3114 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,477 psi | 85% | 3179 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,143 psi | 85% | 3182 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 58,334 psi | 90% | 3241 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,203 psi | 88% | 3264 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,580 psi | 89% | 3343 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,261 psi | 88% | 3317 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 3235 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,085 psi | 85% | 3130 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,130 psi | 88% | 3268 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,116 psi | 88% | 3383 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,912 psi | 86% | 3205 fps | 99.3% |
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% | 32,793 psi | 50% | 2720 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 44,425 psi | 68% | 3012 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 45,353 psi | 70% | 3110 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 52,794 psi | 81% | 3110 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,885 psi | 61% | 2936 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 88% | 43,932 psi | 68% | 3061 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 42,090 psi | 65% | 3005 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 32,822 psi | 50% | 2815 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,882 psi | 83% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,888 psi | 66% | 3028 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,850 psi | 77% | 3163 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,188 psi | 57% | 2864 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,145 psi | 59% | 2927 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,647 psi | 49% | 2756 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,501 psi | 45% | 2707 fps | 95.3% |
| Alliant Reloder-26 | 59.7 gr | 80% | 34,708 psi | 53% | 2900 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,634 psi | 81% | 3159 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 37,855 psi | 58% | 2917 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 54,708 psi | 84% | 3146 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 40,843 psi | 63% | 3018 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 38,145 psi | 59% | 2927 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,485 psi | 73% | 3025 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 40,321 psi | 62% | 2969 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 46,485 psi | 72% | 3074 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 48,994 psi | 75% | 3091 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 43,656 psi | 67% | 2995 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,108 psi | 71% | 3048 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,263 psi | 62% | 2897 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,782 psi | 58% | 3005 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,180 psi | 71% | 3097 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 42% | 1831 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,975 psi | 66% | 2946 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,066 psi | 75% | 3058 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,511 psi | 65% | 2959 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,540 psi | 65% | 2936 fps | 95% |
| IMR 7828 SSC | 61.4 gr | 88% | 42,134 psi | 65% | 3031 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,296 psi | 71% | 2995 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,599 psi | 69% | 2982 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,023 psi | 46% | 2638 fps | 95% |
| Norma 204 | <<locked>> | 80% | 43,149 psi | 66% | 2986 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 35,795 psi | 55% | 2933 fps | 96% |
| Norma MRP | <<locked>> | 80% | 34,635 psi | 53% | 2864 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,787 psi | 67% | 3005 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 41,814 psi | 64% | 3038 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,917 psi | 66% | 2999 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 34,534 psi | 53% | 2822 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 43% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,810 psi | 84% | 3159 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,055 psi | 82% | 3212 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,628 psi | 69% | 3038 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,091 psi | 66% | 3058 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,534 psi | 53% | 2904 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,339 psi | 70% | 3150 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 51,488 psi | 79% | 3091 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,263 psi | 63% | 2917 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 39,131 psi | 60% | 2913 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 47,485 psi | 73% | 3025 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,296 psi | 71% | 2995 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,599 psi | 69% | 2982 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,345 psi | 82% | 3159 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,793 psi | 80% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,484 psi | 70% | 2943 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,783 psi | 60% | 2907 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,372 psi | 79% | 3087 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,121 psi | 69% | 2966 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 40,683 psi | 63% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,941 psi | 57% | 2828 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 80% | 49,226 psi | 76% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,252 psi | 70% | 2999 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,709 psi | 56% | 2812 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,599 psi | 69% | 3002 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,621 psi | 55% | 2844 fps | 99% |
| Vihtavuori N560 | <<locked>> | 86% | 43,250 psi | 67% | 3064 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 43,207 psi | 66% | 3045 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 46,746 psi | 72% | 3166 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,686 psi | 69% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,702 psi | 72% | 3077 fps | 99% |
| Winchester StaBALL HD | 57.4 gr | 80% | 28,123 psi | 43% | 2756 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,928 psi | 60% | 2874 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 79 powders for 6.5 Weatherby RPM loaded with the .264 | 115gr | Hammer Power. Winchester StaBALL HD delivers the highest muzzle velocity at 3,383 fps; across all powders the maximum-charge window runs from 2,047 fps to 3,383 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 115.0 gr projectile in 0.264" calls for a 1:8.5 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. Alliant Reloder-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for 6.5 Weatherby RPM with the .264 | 115gr | Hammer Power 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.