Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 144gr | Lapua FMJ Boat Tail bullet and 67 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>> | 90% | 57,682 psi | 89% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 58,407 psi | 90% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,652 psi | 87% | 3028 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 86% | 55,332 psi | 85% | 2949 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 57,406 psi | 88% | 3022 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 98% | 55,651 psi | 86% | 2995 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,822 psi | 80% | 3038 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,041 psi | 83% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,695 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 58,537 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,769 psi | 89% | 3018 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 55,825 psi | 86% | 2923 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 55,579 psi | 86% | 2992 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,260 psi | 87% | 3012 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 57,305 psi | 88% | 3097 fps | 98.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 48,660 psi | 75% | 2943 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 58,030 psi | 89% | 2986 fps | 98.7% |
| Bofors RP15 | <<locked>> | 92% | 56,927 psi | 88% | 3002 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 55,521 psi | 85% | 3012 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 57,769 psi | 89% | 3018 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 57,261 psi | 88% | 3018 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 56,681 psi | 87% | 2956 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 55,622 psi | 86% | 2936 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 55,927 psi | 86% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 58,450 psi | 90% | 3140 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 58% | 1850 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,957 psi | 89% | 2923 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 58,566 psi | 90% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,145 psi | 88% | 2930 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 90% | 55,680 psi | 86% | 3005 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,458 psi | 76% | 2933 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 58,189 psi | 90% | 2894 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 56,579 psi | 87% | 2900 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,811 psi | 86% | 2887 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,303 psi | 85% | 2927 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 50,401 psi | 78% | 2959 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,943 psi | 89% | 3035 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,507 psi | 87% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,869 psi | 87% | 3028 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 55,288 psi | 85% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,027 psi | 85% | 2953 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,479 psi | 59% | 1890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 58,494 psi | 90% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,087 psi | 88% | 2989 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 55,172 psi | 85% | 3071 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 54,549 psi | 84% | 3035 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 86% | 56,086 psi | 86% | 2920 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 58,494 psi | 90% | 2986 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 58,189 psi | 90% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 56,579 psi | 87% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,971 psi | 88% | 2848 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 58,088 psi | 89% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 57,435 psi | 88% | 2910 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 57,899 psi | 89% | 2917 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,769 psi | 90% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 58,015 psi | 89% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 58,537 psi | 90% | 2940 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,653 psi | 89% | 2966 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 82% | 57,145 psi | 88% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,899 psi | 89% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,392 psi | 88% | 3038 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 58,102 psi | 89% | 3028 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 96% | 55,259 psi | 85% | 3038 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 56,391 psi | 87% | 3097 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,348 psi | 88% | 2851 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 55,347 psi | 85% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 58,566 psi | 90% | 2953 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% | 41,365 psi | 64% | 2648 fps | 99.9% |
| Accurate 4350 | <<locked>> | 80% | 54,534 psi | 84% | 2877 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,743 psi | 66% | 2772 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 45,353 psi | 70% | 2776 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 40,654 psi | 63% | 2717 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 34,592 psi | 53% | 2572 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 96% | 44,976 psi | 69% | 2894 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 27,731 psi | 43% | 2421 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,257 psi | 80% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,324 psi | 70% | 2769 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,307 psi | 64% | 2723 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,103 psi | 62% | 2664 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,606 psi | 53% | 2602 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,150 psi | 69% | 2835 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 42,467 psi | 65% | 2822 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 98% | 45,121 psi | 69% | 2874 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 42,380 psi | 65% | 2690 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 38,493 psi | 59% | 2661 fps | 98% |
| Bofors RP30 | <<locked>> | 80% | 32,140 psi | 49% | 2530 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 41,307 psi | 64% | 2723 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 32,996 psi | 51% | 2533 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 80% | 43,323 psi | 67% | 2717 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,496 psi | 65% | 2700 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 49,110 psi | 76% | 2756 fps | 100% |
| Hodgdon Retumbo | 55.6 gr | 80% | 33,808 psi | 52% | 2638 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,181 psi | 43% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,039 psi | 79% | 2815 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,372 psi | 79% | 2818 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,454 psi | 68% | 2710 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 39,508 psi | 61% | 2700 fps | 97.3% |
| IMR 8133 Enduron | <<locked>> | 88% | 32,982 psi | 51% | 2575 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 54,636 psi | 84% | 2844 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 53,113 psi | 82% | 2844 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,708 psi | 55% | 2526 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 51,750 psi | 80% | 2867 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 28,993 psi | 45% | 2484 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 43,714 psi | 67% | 2795 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 52,895 psi | 81% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,204 psi | 60% | 2707 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 80% | 51,793 psi | 80% | 2867 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,259 psi | 54% | 2585 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1693 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,781 psi | 84% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,069 psi | 82% | 2927 fps | 100% |
| ReloadSwiss RS 76 | 59.5 gr | 80% | 32,895 psi | 51% | 2612 fps | 98.3% |
| ReloadSwiss RS 80 | 64.5 gr | 86% | 37,376 psi | 58% | 2697 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 46,253 psi | 71% | 2749 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 80% | 44,918 psi | 69% | 2759 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,636 psi | 84% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 53,113 psi | 82% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,403 psi | 82% | 2795 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,585 psi | 69% | 2756 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 47,152 psi | 73% | 2740 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 50,575 psi | 78% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,295 psi | 70% | 2736 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 54,346 psi | 84% | 2851 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,537 psi | 61% | 2612 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 92% | 50,372 psi | 77% | 2844 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 53,606 psi | 82% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,585 psi | 69% | 2740 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,482 psi | 67% | 2789 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 80% | 36,071 psi | 55% | 2608 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 38,798 psi | 60% | 2717 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 92% | 45,542 psi | 70% | 2900 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,548 psi | 82% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,710 psi | 58% | 2723 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,727 psi | 64% | 2667 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 67 powders for 6.5 Weatherby RPM loaded with the .264 | 144gr | Lapua FMJ Boat Tail. Hodgdon Retumbo delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,140 fps. ADI AR 2218 gives the best case fill at 100 %, and 67 of the 67 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 144.0 gr projectile in 0.264" calls for a 1:9.5 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 | 144gr | Lapua FMJ Boat Tail 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.