Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 125gr | Hammer HHT bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate MAGPRO and Ramshot Grand.
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% | 57,537 psi | 89% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,682 psi | 90% | 3133 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,014 psi | 86% | 3202 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 58,784 psi | 90% | 3081 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 55,463 psi | 85% | 3133 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 57,305 psi | 88% | 3205 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 3097 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,021 psi | 71% | 3054 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,550 psi | 85% | 3130 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,855 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,726 psi | 90% | 3182 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,421 psi | 88% | 3199 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,566 psi | 90% | 3159 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,233 psi | 90% | 3228 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,245 psi | 85% | 3199 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,508 psi | 90% | 3156 fps | 97.3% |
| Bofors RP15 | <<locked>> | 96% | 56,289 psi | 87% | 3179 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 3173 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 57,421 psi | 88% | 3199 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 56,913 psi | 88% | 3074 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,840 psi | 87% | 3189 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 56,347 psi | 87% | 3133 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 58,784 psi | 90% | 3143 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 57,000 psi | 88% | 3133 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,869 psi | 86% | 3117 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,057 psi | 86% | 3051 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,014 psi | 88% | 3314 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,043 psi | 88% | 3173 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,217 psi | 57% | 1962 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,610 psi | 90% | 3114 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,131 psi | 89% | 3097 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 58,697 psi | 90% | 3117 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,885 psi | 89% | 3117 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 54,969 psi | 85% | 3176 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,611 psi | 64% | 2953 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 55,550 psi | 85% | 3041 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,145 psi | 88% | 3091 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,407 psi | 90% | 3114 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,144 psi | 86% | 3120 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,713 psi | 64% | 2979 fps | 98.7% |
| Norma MRP | <<locked>> | 92% | 57,261 psi | 88% | 3219 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,681 psi | 87% | 3110 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,956 psi | 86% | 3202 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 55,782 psi | 86% | 3120 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,494 psi | 90% | 3192 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,971 psi | 58% | 2005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,566 psi | 90% | 3153 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,898 psi | 88% | 3182 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 58,204 psi | 90% | 3310 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,026 psi | 82% | 3189 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 82% | 58,218 psi | 90% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,623 psi | 87% | 3104 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 58,276 psi | 90% | 3169 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 56,913 psi | 88% | 3074 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,550 psi | 85% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,145 psi | 88% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,624 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,262 psi | 90% | 3048 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,827 psi | 89% | 3166 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 57,711 psi | 89% | 3061 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,247 psi | 90% | 3091 fps | 98.8% |
| Somchem S365 | <<locked>> | 88% | 57,522 psi | 88% | 3114 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,085 psi | 85% | 3081 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,361 psi | 85% | 2979 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,668 psi | 90% | 3100 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 58,450 psi | 90% | 3117 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 57,667 psi | 89% | 3107 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,130 psi | 88% | 3136 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,956 psi | 88% | 3215 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 57,101 psi | 88% | 3196 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,809 psi | 83% | 3192 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,218 psi | 90% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,347 psi | 87% | 3133 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,913 psi | 88% | 3248 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,940 psi | 85% | 3077 fps | 99.5% |
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% | 35,766 psi | 55% | 2690 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 47,747 psi | 73% | 2956 fps | 100% |
| Accurate MAGPRO | 60.4 gr | 84% | 42,250 psi | 65% | 2930 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 55,317 psi | 85% | 3028 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 39,711 psi | 61% | 2825 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 40,582 psi | 62% | 2877 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 39,189 psi | 60% | 2835 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 31,009 psi | 48% | 2667 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,672 psi | 70% | 2963 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,765 psi | 81% | 3084 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,769 psi | 61% | 2822 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,636 psi | 55% | 2756 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,272 psi | 53% | 2720 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,820 psi | 46% | 2621 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,898 psi | 58% | 2874 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,793 psi | 80% | 3035 fps | 95.8% |
| Bofors RP15 | <<locked>> | 82% | 35,389 psi | 54% | 2749 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 38,406 psi | 59% | 2854 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 35,636 psi | 55% | 2756 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 50,082 psi | 77% | 2959 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 37,536 psi | 58% | 2799 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 49,255 psi | 76% | 3009 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,779 psi | 80% | 3025 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 43,439 psi | 67% | 2884 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,569 psi | 65% | 2864 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,004 psi | 66% | 2835 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 35,592 psi | 55% | 2841 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 49,211 psi | 76% | 3041 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 43% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,498 psi | 70% | 2887 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,532 psi | 79% | 2989 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 45,223 psi | 70% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,047 psi | 65% | 2818 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 39,218 psi | 60% | 2854 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,754 psi | 60% | 2884 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 48,950 psi | 75% | 2930 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,355 psi | 73% | 2923 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,864 psi | 47% | 2562 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 45,774 psi | 70% | 2933 fps | 98.1% |
| Norma 217 | <<locked>> | 92% | 31,894 psi | 49% | 2723 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 37,434 psi | 58% | 2831 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 46,659 psi | 72% | 2943 fps | 100% |
| Ramshot Grand | 58.8 gr | 84% | 38,870 psi | 60% | 2861 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 45,614 psi | 70% | 2940 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 32,227 psi | 50% | 2661 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 44% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,761 psi | 73% | 2979 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,847 psi | 71% | 2995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,343 psi | 50% | 2740 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,163 psi | 65% | 2972 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 54,650 psi | 84% | 3015 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,959 psi | 63% | 2802 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 39,160 psi | 60% | 2805 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 50,082 psi | 77% | 2959 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,950 psi | 75% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,355 psi | 73% | 2923 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,418 psi | 84% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,921 psi | 74% | 2874 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,827 psi | 60% | 2799 fps | 96.6% |
| Somchem S355 | <<locked>> | 80% | 54,273 psi | 83% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,742 psi | 64% | 2789 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,801 psi | 67% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,740 psi | 61% | 2789 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 52,040 psi | 80% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,095 psi | 74% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,432 psi | 53% | 2651 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,529 psi | 73% | 2940 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,421 psi | 59% | 2799 fps | 99.8% |
| Vihtavuori N560 | 57.9 gr | 82% | 40,306 psi | 62% | 2887 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 88% | 40,495 psi | 62% | 2874 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 94% | 43,482 psi | 67% | 2986 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,224 psi | 73% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,501 psi | 76% | 3015 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,632 psi | 47% | 2746 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,216 psi | 56% | 2703 fps | 95.6% |
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 | 125gr | Hammer HHT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,314 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,314 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 125.0 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. Vihtavuori N560, Accurate MAGPRO, Ramshot Grand rank at the top here: for 6.5 Weatherby RPM with the .264 | 125gr | Hammer HHT 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.