Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 140gr | Hornady ECX bullet and 73 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 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 56,608 psi | 87% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,754 psi | 89% | 2963 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,738 psi | 86% | 3051 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 90% | 58,668 psi | 90% | 3035 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 56,811 psi | 87% | 3048 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,621 psi | 84% | 3012 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,274 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,276 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,942 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,450 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,349 psi | 90% | 3071 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,187 psi | 85% | 3038 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,663 psi | 79% | 3035 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,856 psi | 89% | 3009 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 56,101 psi | 86% | 3028 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 3084 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 56,942 psi | 88% | 3041 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 55,695 psi | 86% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,507 psi | 87% | 3041 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 55,680 psi | 86% | 2969 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,899 psi | 89% | 2979 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,246 psi | 87% | 2979 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,143 psi | 85% | 2963 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,288 psi | 85% | 2884 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,159 psi | 88% | 3159 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,231 psi | 87% | 3005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 58% | 1860 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,812 psi | 89% | 2953 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,290 psi | 88% | 2933 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,914 psi | 89% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,884 psi | 88% | 2959 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 94% | 58,740 psi | 90% | 3087 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,498 psi | 68% | 2877 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 57,841 psi | 89% | 2923 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,115 psi | 86% | 2927 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 58,102 psi | 89% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,245 psi | 85% | 2959 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,092 psi | 69% | 2907 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 56,971 psi | 88% | 3061 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,869 psi | 86% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,869 psi | 86% | 3051 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 58,813 psi | 90% | 3012 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,450 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,174 psi | 59% | 1900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,783 psi | 89% | 2986 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,463 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,015 psi | 89% | 3153 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,421 psi | 88% | 3117 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 55,883 psi | 86% | 2946 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 90% | 57,783 psi | 89% | 3012 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 55,695 psi | 86% | 2910 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,841 psi | 89% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,115 psi | 86% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,058 psi | 88% | 2881 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,363 psi | 88% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,392 psi | 88% | 2940 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 57,029 psi | 88% | 2946 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,044 psi | 89% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,943 psi | 89% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,841 psi | 89% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,088 psi | 89% | 2966 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,681 psi | 87% | 2979 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 84% | 56,884 psi | 88% | 2940 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,666 psi | 87% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,608 psi | 87% | 3061 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 96% | 56,579 psi | 87% | 3041 fps | 99.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,783 psi | 89% | 3114 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,853 psi | 84% | 3110 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,159 psi | 88% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,680 psi | 86% | 2969 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,493 psi | 88% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,175 psi | 89% | 2979 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% | 37,550 psi | 58% | 2602 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,285 psi | 77% | 2851 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 38,885 psi | 60% | 2720 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,945 psi | 65% | 2740 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 80% | 37,420 psi | 58% | 2671 fps | 96% |
| ADI AR 2217 | <<locked>> | 88% | 36,230 psi | 56% | 2641 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 84% | 28,631 psi | 44% | 2477 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,399 psi | 74% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,916 psi | 64% | 2733 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,782 psi | 58% | 2680 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,376 psi | 56% | 2628 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,386 psi | 48% | 2552 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,524 psi | 62% | 2785 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,164 psi | 68% | 2890 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 44,860 psi | 69% | 2769 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 35,027 psi | 54% | 2612 fps | 96.4% |
| Bofors RP30 | <<locked>> | 84% | 33,185 psi | 51% | 2595 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,782 psi | 58% | 2680 fps | 97.5% |
| Bofors RP7 | <<locked>> | 80% | 52,301 psi | 80% | 2854 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 34,447 psi | 53% | 2598 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 51,996 psi | 80% | 2910 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 54,418 psi | 84% | 2923 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 39,856 psi | 61% | 2674 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,247 psi | 60% | 2661 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,324 psi | 70% | 2730 fps | 100% |
| Hodgdon Retumbo | 53.9 gr | 80% | 30,661 psi | 47% | 2572 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 52,170 psi | 80% | 2943 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 43% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,732 psi | 73% | 2792 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,606 psi | 82% | 2877 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,529 psi | 73% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,437 psi | 64% | 2677 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 35,998 psi | 55% | 2648 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 33,823 psi | 52% | 2631 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 51,082 psi | 79% | 2822 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,501 psi | 76% | 2822 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,242 psi | 50% | 2477 fps | 98% |
| Norma 204 | <<locked>> | 80% | 48,051 psi | 74% | 2838 fps | 99.3% |
| Norma 217 | <<locked>> | 88% | 29,414 psi | 45% | 2530 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 39,726 psi | 61% | 2749 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 49,139 psi | 76% | 2838 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,520 psi | 55% | 2651 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 47,964 psi | 74% | 2838 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,589 psi | 49% | 2526 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 44% | 1699 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,299 psi | 77% | 2874 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,892 psi | 75% | 2900 fps | 100% |
| ReloadSwiss RS 76 | 57.7 gr | 80% | 29,660 psi | 46% | 2543 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,783 psi | 60% | 2766 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,033 psi | 66% | 2717 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 80% | 41,336 psi | 64% | 2720 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 52,301 psi | 80% | 2854 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,082 psi | 79% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,501 psi | 76% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,053 psi | 77% | 2776 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,002 psi | 63% | 2717 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 43,845 psi | 67% | 2703 fps | 97.2% |
| Somchem S365 | <<locked>> | 80% | 46,470 psi | 71% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,771 psi | 64% | 2700 fps | 99% |
| Vihtavuori N150 | <<locked>> | 80% | 54,418 psi | 84% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,633 psi | 78% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,260 psi | 56% | 2572 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 96% | 52,924 psi | 81% | 2917 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 49,719 psi | 76% | 2831 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,567 psi | 62% | 2703 fps | 100% |
| Vihtavuori N560 | 55.9 gr | 80% | 39,740 psi | 61% | 2740 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 84% | 37,434 psi | 58% | 2674 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 90% | 40,176 psi | 62% | 2782 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 96% | 47,326 psi | 73% | 2969 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,937 psi | 77% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,996 psi | 80% | 2910 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,141 psi | 51% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,218 psi | 59% | 2625 fps | 97.5% |
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 | 140gr | Hornady ECX. Hodgdon Retumbo delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,159 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 58–90 %, leaving at least 10 % headroom. The 140.0 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 2218, ADI AR 2225 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, Vihtavuori N560 rank at the top here: for 6.5 Weatherby RPM with the .264 | 140gr | Hornady ECX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.