Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 130gr | Merlin Virtus bullet and 76 powders. The key underlying parameters are shown in the table above.
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% | 57,479 psi | 88% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,624 psi | 90% | 3081 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,622 psi | 86% | 3156 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 56,565 psi | 87% | 3163 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 90% | 56,028 psi | 86% | 3094 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 57,667 psi | 89% | 3163 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,692 psi | 80% | 3054 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,180 psi | 71% | 3012 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,101 psi | 86% | 3091 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,072 psi | 86% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,101 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,434 psi | 85% | 3081 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,711 psi | 89% | 3153 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,187 psi | 85% | 3058 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3182 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,825 psi | 86% | 3156 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,535 psi | 85% | 3061 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 56,797 psi | 87% | 3140 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,563 psi | 84% | 3130 fps | 99.5% |
| Bofors RP5 | <<locked>> | 94% | 57,711 psi | 89% | 3153 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 56,913 psi | 88% | 3028 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,232 psi | 88% | 3150 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 56,782 psi | 87% | 3087 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,434 psi | 85% | 3041 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 57,566 psi | 89% | 3097 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,130 psi | 86% | 3074 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,159 psi | 86% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,479 psi | 88% | 3271 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,319 psi | 88% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 57% | 1923 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,303 psi | 85% | 3015 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,508 psi | 90% | 3051 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,172 psi | 85% | 3015 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,073 psi | 89% | 3074 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 94% | 55,593 psi | 86% | 3140 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,626 psi | 64% | 2907 fps | 97.1% |
| Lovex S065 | <<locked>> | 84% | 55,463 psi | 85% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,377 psi | 88% | 3045 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,653 psi | 90% | 3068 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,362 psi | 87% | 3077 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 41,756 psi | 64% | 2933 fps | 99% |
| Norma MRP | <<locked>> | 92% | 57,856 psi | 89% | 3176 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,058 psi | 88% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,420 psi | 87% | 3159 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 55,941 psi | 86% | 3074 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,911 psi | 84% | 3091 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 58% | 1972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,056 psi | 85% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,551 psi | 89% | 3143 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 3268 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,490 psi | 82% | 3153 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 82% | 58,334 psi | 90% | 3018 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 57,101 psi | 88% | 3061 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 92% | 58,798 psi | 90% | 3127 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 56,913 psi | 88% | 3028 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,463 psi | 85% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,377 psi | 88% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,914 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,581 psi | 90% | 3002 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,349 psi | 90% | 3123 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 57,885 psi | 89% | 3012 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,697 psi | 90% | 3054 fps | 99.1% |
| Somchem S365 | <<locked>> | 88% | 57,943 psi | 89% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,434 psi | 85% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,564 psi | 85% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,798 psi | 90% | 3054 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,056 psi | 85% | 3018 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 57,986 psi | 89% | 3061 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,450 psi | 88% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,580 psi | 89% | 3179 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 98% | 57,319 psi | 88% | 3153 fps | 99.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,462 psi | 84% | 3153 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,479 psi | 90% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,782 psi | 87% | 3087 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,827 psi | 89% | 3205 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,419 psi | 85% | 3035 fps | 99.7% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,462 psi | 55% | 2641 fps | 98.3% |
| Accurate 4350 | <<locked>> | 80% | 47,747 psi | 73% | 2910 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 38,725 psi | 60% | 2818 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 84% | 42,206 psi | 65% | 2887 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 39,842 psi | 61% | 2785 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 37,927 psi | 58% | 2769 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 90% | 36,796 psi | 57% | 2736 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 88% | 30,879 psi | 48% | 2625 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,263 psi | 62% | 2785 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,977 psi | 71% | 2920 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,200 psi | 82% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,856 psi | 61% | 2779 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,650 psi | 55% | 2717 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,243 psi | 53% | 2674 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,646 psi | 46% | 2582 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,811 psi | 58% | 2825 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,834 psi | 75% | 2936 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 35,375 psi | 54% | 2707 fps | 95.7% |
| Bofors RP30 | <<locked>> | 88% | 35,795 psi | 55% | 2749 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 35,650 psi | 55% | 2717 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 50,198 psi | 77% | 2917 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 35,012 psi | 54% | 2694 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 49,516 psi | 76% | 2966 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 52,069 psi | 80% | 2986 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 40,640 psi | 63% | 2779 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,827 psi | 61% | 2762 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,105 psi | 66% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 33,156 psi | 51% | 2730 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 49,327 psi | 76% | 2992 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 43% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,658 psi | 70% | 2844 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,532 psi | 79% | 2940 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,237 psi | 70% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,581 psi | 61% | 2720 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 39,146 psi | 60% | 2812 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,332 psi | 56% | 2782 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 49,008 psi | 75% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,369 psi | 73% | 2877 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 30,298 psi | 47% | 2507 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 45,759 psi | 70% | 2887 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 31,604 psi | 49% | 2677 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 37,318 psi | 57% | 2785 fps | 97.9% |
| Norma URP | <<locked>> | 80% | 46,818 psi | 72% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,201 psi | 56% | 2753 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 45,600 psi | 70% | 2894 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 32,126 psi | 49% | 2621 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 44% | 1762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,921 psi | 74% | 2933 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,166 psi | 71% | 2956 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 29,921 psi | 46% | 2625 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,235 psi | 65% | 2933 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 54,737 psi | 84% | 2966 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,046 psi | 63% | 2762 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 39,189 psi | 60% | 2762 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 80% | 50,198 psi | 77% | 2917 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,008 psi | 75% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,369 psi | 73% | 2877 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,360 psi | 84% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,993 psi | 74% | 2831 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,870 psi | 60% | 2759 fps | 97.1% |
| Somchem S355 | <<locked>> | 80% | 54,389 psi | 84% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,785 psi | 64% | 2749 fps | 95.9% |
| Somchem S365 | <<locked>> | 80% | 43,932 psi | 68% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,668 psi | 61% | 2743 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 52,170 psi | 80% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,283 psi | 74% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,345 psi | 53% | 2608 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,645 psi | 73% | 2897 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,290 psi | 59% | 2753 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,248 psi | 62% | 2841 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 86% | 37,739 psi | 58% | 2769 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 43,569 psi | 67% | 2946 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,529 psi | 73% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,516 psi | 76% | 2966 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,414 psi | 47% | 2697 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,216 psi | 56% | 2664 fps | 96.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 76 powders for 6.5 Weatherby RPM loaded with the .264 | 130gr | Merlin Virtus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,271 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,271 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 130.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.