Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 121gr | SUS-TAC LRT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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% | 56,188 psi | 86% | 3123 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,479 psi | 88% | 3163 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,882 psi | 84% | 3222 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 82% | 57,870 psi | 89% | 3114 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,204 psi | 90% | 3222 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 55,985 psi | 86% | 3228 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,430 psi | 78% | 3117 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,049 psi | 69% | 3074 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,320 psi | 90% | 3222 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,651 psi | 86% | 3176 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,798 psi | 89% | 3212 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,057 psi | 86% | 3222 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,493 psi | 88% | 3192 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,985 psi | 88% | 3258 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 58,334 psi | 90% | 3291 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,870 psi | 89% | 3182 fps | 96.8% |
| Bofors RP15 | <<locked>> | 96% | 55,245 psi | 85% | 3205 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 3192 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 56,057 psi | 86% | 3222 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,970 psi | 86% | 3104 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,695 psi | 86% | 3212 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,274 psi | 85% | 3159 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 58,001 psi | 89% | 3176 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 56,043 psi | 86% | 3163 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,552 psi | 90% | 3205 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,508 psi | 90% | 3130 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,767 psi | 86% | 3337 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,753 psi | 86% | 3196 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 57% | 1991 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,551 psi | 89% | 3143 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,464 psi | 88% | 3130 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,841 psi | 89% | 3153 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,753 psi | 87% | 3140 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 96% | 57,885 psi | 89% | 3268 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 58,015 psi | 89% | 3123 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,376 psi | 87% | 3123 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,348 psi | 88% | 3140 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,042 psi | 85% | 3143 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 40,683 psi | 63% | 2992 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 56,101 psi | 86% | 3245 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,840 psi | 86% | 3143 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,766 psi | 84% | 3225 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 58,392 psi | 90% | 3205 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,464 psi | 88% | 3219 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,014 psi | 58% | 2041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,580 psi | 89% | 3186 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,854 psi | 86% | 3215 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,811 psi | 87% | 3333 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,634 psi | 79% | 3209 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 57,421 psi | 88% | 3104 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,825 psi | 86% | 3133 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 57,276 psi | 88% | 3199 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,970 psi | 86% | 3104 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,015 psi | 89% | 3123 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,376 psi | 87% | 3123 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,826 psi | 87% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,334 psi | 88% | 3074 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,840 psi | 87% | 3192 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,000 psi | 88% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,334 psi | 88% | 3120 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 56,246 psi | 87% | 3140 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,928 psi | 89% | 3169 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,189 psi | 90% | 3061 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,566 psi | 89% | 3130 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,435 psi | 88% | 3143 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,811 psi | 87% | 3140 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,101 psi | 86% | 3166 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,883 psi | 86% | 3241 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 55,912 psi | 86% | 3219 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,518 psi | 81% | 3212 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,334 psi | 88% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,550 psi | 85% | 3163 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,434 psi | 85% | 3278 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,928 psi | 89% | 3166 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% | 34,969 psi | 54% | 2710 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 46,804 psi | 72% | 2982 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,382 psi | 68% | 3018 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 54,476 psi | 84% | 3058 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,943 psi | 60% | 2844 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 84% | 39,958 psi | 61% | 2897 fps | 95% |
| ADI AR 2217 | <<locked>> | 94% | 41,089 psi | 63% | 2917 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 32,532 psi | 50% | 2746 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,744 psi | 69% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,895 psi | 80% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,001 psi | 60% | 2841 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,405 psi | 58% | 2841 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,518 psi | 52% | 2740 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,196 psi | 45% | 2635 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,898 psi | 57% | 2890 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,010 psi | 78% | 3058 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 37,115 psi | 57% | 2831 fps | 95.5% |
| Bofors RP30 | <<locked>> | 92% | 40,161 psi | 62% | 2936 fps | 96% |
| Bofors RP5 | <<locked>> | 82% | 37,405 psi | 58% | 2841 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 49,269 psi | 76% | 2986 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 39,334 psi | 61% | 2877 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 48,327 psi | 74% | 3035 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,850 psi | 78% | 3051 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,511 psi | 65% | 2904 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,887 psi | 64% | 2887 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,148 psi | 65% | 2861 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,751 psi | 53% | 2851 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 48,095 psi | 74% | 3061 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,717 psi | 43% | 1781 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,686 psi | 69% | 2910 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,705 psi | 78% | 3015 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,570 psi | 69% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,495 psi | 64% | 2844 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 41,147 psi | 63% | 2940 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 48,153 psi | 74% | 2959 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,514 psi | 72% | 2949 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 30,182 psi | 46% | 2579 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 44,889 psi | 69% | 2953 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 33,272 psi | 51% | 2799 fps | 95.4% |
| Norma MRP | 56.8 gr | 80% | 36,535 psi | 56% | 2848 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 45,774 psi | 70% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,756 psi | 63% | 2943 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 44,715 psi | 69% | 2966 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,910 psi | 52% | 2743 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 44% | 1827 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,746 psi | 72% | 3002 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,049 psi | 69% | 3025 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 34,142 psi | 53% | 2828 fps | 96.3% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,208 psi | 68% | 3054 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,722 psi | 83% | 3048 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,248 psi | 62% | 2825 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 38,334 psi | 59% | 2825 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 49,269 psi | 76% | 2986 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,153 psi | 74% | 2959 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,514 psi | 72% | 2949 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,635 psi | 83% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,181 psi | 73% | 2900 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,000 psi | 58% | 2818 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 53,374 psi | 82% | 3041 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,888 psi | 68% | 2871 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 42,844 psi | 66% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,914 psi | 60% | 2808 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 51,155 psi | 79% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,224 psi | 73% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,129 psi | 56% | 2730 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 46,659 psi | 72% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,768 psi | 58% | 2825 fps | 99.6% |
| Vihtavuori N560 | 59.6 gr | 84% | 42,206 psi | 65% | 2969 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 90% | 42,525 psi | 65% | 2959 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 96% | 45,585 psi | 70% | 3071 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,543 psi | 72% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,544 psi | 75% | 3038 fps | 99.5% |
| Winchester StaBALL HD | 56.2 gr | 80% | 29,907 psi | 46% | 2756 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,621 psi | 55% | 2726 fps | 95% |
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 74 powders for 6.5 Weatherby RPM loaded with the .264 | 121gr | SUS-TAC LRT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,337 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 121.0 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, Norma MRP, Vihtavuori N560 rank at the top here: for 6.5 Weatherby RPM with the .264 | 121gr | SUS-TAC LRT 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.