Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 140gr | Barnes X S bullet and 64 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 ReloadSwiss RS 80.
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>> | 88% | 56,362 psi | 87% | 2913 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 57,305 psi | 88% | 3068 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 58,102 psi | 89% | 3074 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 86% | 56,724 psi | 87% | 2992 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 58,595 psi | 90% | 3064 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 56,797 psi | 87% | 3035 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,417 psi | 82% | 3084 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 55,463 psi | 85% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,985 psi | 88% | 2989 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,985 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,971 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,420 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,666 psi | 86% | 3005 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,435 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,101 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,189 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 58,755 psi | 90% | 3140 fps | 98.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 3002 fps | 96.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 58,769 psi | 90% | 3015 fps | 98.5% |
| Bofors RP15 | <<locked>> | 92% | 58,508 psi | 90% | 3048 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,174 psi | 88% | 3058 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 55,666 psi | 86% | 3005 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 58,407 psi | 90% | 3058 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 57,972 psi | 89% | 2995 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,898 psi | 88% | 2979 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,261 psi | 88% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 55,999 psi | 86% | 3127 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 58% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,492 psi | 85% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,768 psi | 87% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,276 psi | 90% | 2969 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 57,029 psi | 88% | 3048 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,300 psi | 79% | 2986 fps | 99.6% |
| Lovex S070 | <<locked>> | 82% | 58,131 psi | 89% | 2940 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 57,870 psi | 89% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,782 psi | 87% | 2969 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,330 psi | 81% | 3015 fps | 100% |
| Norma MRP | <<locked>> | 86% | 55,608 psi | 86% | 3022 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,885 psi | 89% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,015 psi | 89% | 3068 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 56,884 psi | 88% | 2969 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 56,565 psi | 87% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,827 psi | 60% | 1913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,349 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 56,637 psi | 87% | 3117 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,202 psi | 86% | 3084 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 57,261 psi | 88% | 2956 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,217 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 58,131 psi | 89% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,682 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,811 psi | 86% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 55,187 psi | 85% | 2894 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 55,782 psi | 86% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,840 psi | 87% | 2943 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,391 psi | 87% | 2927 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 55,550 psi | 85% | 2946 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 86% | 56,275 psi | 87% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 58,595 psi | 90% | 3081 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 56,275 psi | 87% | 3022 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 96% | 56,898 psi | 88% | 3084 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 57,928 psi | 89% | 3146 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 58,595 psi | 90% | 2890 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 56,884 psi | 88% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,275 psi | 87% | 2936 fps | 100% |
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% | 44,034 psi | 68% | 2710 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 47,036 psi | 72% | 2887 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 80% | 44,614 psi | 69% | 2828 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 80% | 46,862 psi | 72% | 2822 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 42,322 psi | 65% | 2769 fps | 97.7% |
| ADI AR 2217 | <<locked>> | 82% | 34,258 psi | 53% | 2572 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 96% | 46,644 psi | 72% | 2943 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 29,907 psi | 46% | 2500 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,326 psi | 73% | 2825 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,326 psi | 73% | 2825 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,606 psi | 82% | 2927 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,905 psi | 72% | 2818 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,236 psi | 67% | 2779 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,076 psi | 65% | 2723 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,622 psi | 56% | 2664 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,195 psi | 73% | 2890 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 44,454 psi | 68% | 2881 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,514 psi | 73% | 2940 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,627 psi | 67% | 2733 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 40,451 psi | 62% | 2720 fps | 98.2% |
| Bofors RP30 | <<locked>> | 80% | 34,447 psi | 53% | 2605 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 43,236 psi | 67% | 2779 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 80% | 34,780 psi | 54% | 2589 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 80% | 44,744 psi | 69% | 2762 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,121 psi | 68% | 2749 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,778 psi | 78% | 2799 fps | 100% |
| Hodgdon Retumbo | 54.9 gr | 80% | 35,839 psi | 55% | 2707 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,558 psi | 44% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,431 psi | 81% | 2854 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,287 psi | 82% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,876 psi | 71% | 2753 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 41,046 psi | 63% | 2749 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 88% | 35,201 psi | 54% | 2648 fps | 95.9% |
| Lovex S070 | <<locked>> | 80% | 54,882 psi | 84% | 2890 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 38,377 psi | 59% | 2592 fps | 99.5% |
| Norma 204 | <<locked>> | 80% | 53,243 psi | 82% | 2913 fps | 99.8% |
| Norma 217 | <<locked>> | 82% | 29,602 psi | 46% | 2510 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 45,527 psi | 70% | 2848 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 54,563 psi | 84% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,147 psi | 63% | 2766 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 80% | 53,417 psi | 82% | 2913 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,318 psi | 57% | 2648 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,240 psi | 45% | 1709 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,360 psi | 84% | 2969 fps | 100% |
| ReloadSwiss RS 76 | 58.7 gr | 80% | 35,012 psi | 54% | 2684 fps | 98.7% |
| ReloadSwiss RS 80 | 62.2 gr | 84% | 37,014 psi | 57% | 2703 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 47,761 psi | 73% | 2792 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 46,731 psi | 72% | 2808 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 54,882 psi | 84% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 55,114 psi | 85% | 2838 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,412 psi | 71% | 2805 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 48,675 psi | 75% | 2782 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 52,504 psi | 81% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,355 psi | 73% | 2785 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 41,437 psi | 64% | 2664 fps | 98.9% |
| Vihtavuori N170 | <<locked>> | 92% | 52,156 psi | 80% | 2890 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 46,920 psi | 72% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,150 psi | 69% | 2838 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 38,508 psi | 59% | 2677 fps | 96.3% |
| Vihtavuori N568 | <<locked>> | 86% | 40,683 psi | 63% | 2776 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 92% | 47,268 psi | 73% | 2953 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 54,839 psi | 84% | 2838 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,914 psi | 61% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,395 psi | 67% | 2713 fps | 98.8% |
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 64 powders for 6.5 Weatherby RPM loaded with the .264 | 140gr | Barnes X S. Vihtavuori N570 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,146 fps. ADI AR 2218 gives the best case fill at 100 %, and 64 of the 64 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 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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, ReloadSwiss RS 80 rank at the top here: for 6.5 Weatherby RPM with the .264 | 140gr | Barnes X S 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.