Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 140gr | Berger BT Target bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Accurate High Country and ReloadSwiss RS 76.
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>> | 90% | 55,347 psi | 85% | 2917 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,825 psi | 86% | 2933 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 56,869 psi | 87% | 3074 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 57,812 psi | 89% | 3081 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 56,826 psi | 87% | 3005 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 58,711 psi | 90% | 3077 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,768 psi | 87% | 3045 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,197 psi | 76% | 3009 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,184 psi | 79% | 3009 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,927 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,985 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,275 psi | 87% | 2992 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,100 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,884 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,608 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,508 psi | 88% | 3068 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 3077 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,753 psi | 86% | 2976 fps | 98% |
| Bofors RP15 | <<locked>> | 94% | 58,117 psi | 89% | 3058 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,333 psi | 87% | 3061 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 55,100 psi | 85% | 3012 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,334 psi | 88% | 2933 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,436 psi | 90% | 3068 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,377 psi | 88% | 2992 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,102 psi | 89% | 3009 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,942 psi | 88% | 2989 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,058 psi | 88% | 2907 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,506 psi | 85% | 3133 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,189 psi | 90% | 3035 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 58% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,854 psi | 86% | 2923 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,711 psi | 90% | 2953 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,173 psi | 86% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,566 psi | 90% | 2982 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 56,869 psi | 87% | 3058 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,847 psi | 72% | 2920 fps | 99% |
| Lovex S065 | <<locked>> | 82% | 56,028 psi | 86% | 2897 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,059 psi | 89% | 2953 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,666 psi | 87% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,782 psi | 87% | 2982 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,340 psi | 73% | 2943 fps | 100% |
| Norma MRP | <<locked>> | 88% | 55,158 psi | 85% | 3028 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,914 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 58,030 psi | 89% | 3081 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 56,652 psi | 87% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,304 psi | 87% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,493 psi | 59% | 1909 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,072 psi | 86% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,494 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,275 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,448 psi | 85% | 3084 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 88% | 57,667 psi | 89% | 2976 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 55,854 psi | 86% | 2979 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,334 psi | 88% | 2933 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,028 psi | 86% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,059 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,697 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,448 psi | 85% | 2979 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,216 psi | 85% | 2907 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 55,317 psi | 85% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,231 psi | 87% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,666 psi | 86% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,072 psi | 86% | 2936 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 54,810 psi | 84% | 2949 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 84% | 58,581 psi | 90% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,143 psi | 85% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,610 psi | 90% | 3094 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 55,172 psi | 85% | 3018 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 56,115 psi | 86% | 3084 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,276 psi | 88% | 3150 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,216 psi | 85% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,377 psi | 88% | 2992 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,724 psi | 86% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,072 psi | 86% | 2946 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% | 39,508 psi | 61% | 2641 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 52,344 psi | 81% | 2881 fps | 100% |
| Accurate High Country | 56.5 gr | 80% | 42,975 psi | 66% | 2822 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 80% | 40,654 psi | 63% | 2759 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 43,511 psi | 67% | 2769 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 38,928 psi | 60% | 2707 fps | 96.6% |
| ADI AR 2217 | <<locked>> | 86% | 35,360 psi | 54% | 2618 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 98% | 45,890 psi | 71% | 2940 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 82% | 28,152 psi | 43% | 2461 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,918 psi | 68% | 2772 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,067 psi | 77% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,511 psi | 67% | 2766 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,465 psi | 61% | 2717 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,159 psi | 59% | 2661 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,996 psi | 51% | 2592 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,525 psi | 65% | 2822 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,340 psi | 71% | 2933 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,238 psi | 71% | 2799 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 36,695 psi | 56% | 2651 fps | 97.1% |
| Bofors RP30 | <<locked>> | 84% | 34,954 psi | 54% | 2638 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 39,465 psi | 61% | 2717 fps | 98% |
| Bofors RP7 | <<locked>> | 80% | 53,911 psi | 83% | 2877 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 33,692 psi | 52% | 2575 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 53,679 psi | 83% | 2936 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,379 psi | 64% | 2707 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,770 psi | 63% | 2694 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,079 psi | 72% | 2759 fps | 100% |
| Hodgdon Retumbo | 54.5 gr | 80% | 32,213 psi | 50% | 2621 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 54,070 psi | 83% | 2972 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 43% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,240 psi | 76% | 2818 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,056 psi | 85% | 2897 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,371 psi | 76% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,830 psi | 66% | 2703 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 80% | 37,550 psi | 58% | 2684 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 92% | 35,737 psi | 55% | 2677 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,765 psi | 81% | 2848 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,227 psi | 79% | 2848 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,011 psi | 52% | 2516 fps | 98.6% |
| Norma 204 | <<locked>> | 80% | 49,617 psi | 76% | 2864 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 29,341 psi | 45% | 2523 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 41,510 psi | 64% | 2785 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 50,879 psi | 78% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,362 psi | 57% | 2694 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 80% | 49,617 psi | 76% | 2867 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,431 psi | 51% | 2572 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 44% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,431 psi | 81% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,633 psi | 78% | 2927 fps | 100% |
| ReloadSwiss RS 76 | 58.3 gr | 80% | 31,241 psi | 48% | 2589 fps | 97% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 38,029 psi | 59% | 2746 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 44,527 psi | 69% | 2743 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 43,033 psi | 66% | 2753 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 80% | 53,911 psi | 83% | 2877 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,765 psi | 81% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,227 psi | 79% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,677 psi | 80% | 2799 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,699 psi | 66% | 2749 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 45,339 psi | 70% | 2733 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 48,385 psi | 74% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,526 psi | 67% | 2733 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 52,330 psi | 81% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,855 psi | 58% | 2605 fps | 98% |
| Vihtavuori N170 | <<locked>> | 94% | 51,285 psi | 79% | 2887 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 51,677 psi | 80% | 2861 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,569 psi | 65% | 2740 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,408 psi | 64% | 2776 fps | 96.9% |
| Vihtavuori N565 | <<locked>> | 82% | 36,651 psi | 56% | 2651 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 39,291 psi | 60% | 2759 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 46,006 psi | 71% | 2943 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,474 psi | 79% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,940 psi | 83% | 2940 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,172 psi | 54% | 2707 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,827 psi | 61% | 2657 fps | 98% |
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 | 140gr | Berger BT Target. Vihtavuori N570 delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,150 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 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, Accurate High Country, ReloadSwiss RS 76 rank at the top here: for 6.5 Weatherby RPM with the .264 | 140gr | Berger BT Target 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.