Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 144gr | Lapua MaxRange Target OTM bullet and 68 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% | 56,927 psi | 88% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,421 psi | 88% | 2917 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,651 psi | 86% | 3012 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 88% | 58,334 psi | 90% | 2989 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,376 psi | 87% | 3005 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,479 psi | 90% | 3031 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 50,879 psi | 78% | 3015 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,852 psi | 81% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,552 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,769 psi | 89% | 2979 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,695 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,566 psi | 90% | 2956 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,465 psi | 90% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 55,100 psi | 85% | 2995 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,898 psi | 86% | 3071 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,029 psi | 88% | 2966 fps | 98.4% |
| Bofors RP15 | <<locked>> | 92% | 55,883 psi | 86% | 2986 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 58,117 psi | 89% | 3048 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 56,695 psi | 87% | 2999 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,668 psi | 90% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,289 psi | 87% | 2999 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 55,709 psi | 86% | 2936 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,450 psi | 90% | 2979 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,566 psi | 90% | 2887 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,348 psi | 88% | 3120 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 58% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,174 psi | 88% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,696 psi | 89% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,449 psi | 87% | 2917 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 58,581 psi | 90% | 3045 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,501 psi | 75% | 2917 fps | 99.4% |
| Lovex S065 | <<locked>> | 82% | 57,334 psi | 88% | 2877 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,767 psi | 86% | 2884 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,276 psi | 90% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,262 psi | 90% | 2969 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 49,153 psi | 76% | 2936 fps | 100% |
| Norma MRP | <<locked>> | 88% | 56,855 psi | 87% | 3018 fps | 100% |
| Norma URP | <<locked>> | 82% | 55,593 psi | 86% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,724 psi | 86% | 3009 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 58,102 psi | 89% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,131 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,566 psi | 59% | 1886 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,638 psi | 89% | 2943 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,941 psi | 86% | 2969 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,204 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,667 psi | 89% | 3081 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 88% | 58,798 psi | 90% | 2956 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 88% | 57,406 psi | 88% | 2969 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,668 psi | 90% | 2913 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,334 psi | 88% | 2877 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,767 psi | 86% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,217 psi | 86% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,000 psi | 88% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,550 psi | 87% | 2894 fps | 99.5% |
| Somchem S365 | <<locked>> | 84% | 56,942 psi | 88% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,725 psi | 89% | 2936 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,116 psi | 88% | 2887 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,624 psi | 89% | 2923 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,565 psi | 87% | 2946 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 82% | 56,289 psi | 87% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,768 psi | 87% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,347 psi | 87% | 3022 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 56,869 psi | 87% | 3009 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 98% | 58,247 psi | 90% | 3081 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 98% | 55,158 psi | 85% | 3077 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,637 psi | 87% | 2841 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,146 psi | 89% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,856 psi | 89% | 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% | 40,567 psi | 62% | 2628 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 53,592 psi | 82% | 2861 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 41,959 psi | 65% | 2756 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 80% | 44,759 psi | 69% | 2762 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 39,900 psi | 61% | 2697 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 34,011 psi | 52% | 2552 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 96% | 44,077 psi | 68% | 2867 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 27,180 psi | 42% | 2402 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,300 psi | 79% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,527 psi | 69% | 2749 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,509 psi | 62% | 2703 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,465 psi | 61% | 2651 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,084 psi | 52% | 2589 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,048 psi | 68% | 2812 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 44,730 psi | 69% | 2867 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 44,498 psi | 68% | 2733 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 37,913 psi | 58% | 2644 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 33,721 psi | 52% | 2572 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 40,509 psi | 62% | 2703 fps | 98.5% |
| Bofors RP7 | <<locked>> | 80% | 54,940 psi | 85% | 2858 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 32,372 psi | 50% | 2513 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 80% | 42,583 psi | 66% | 2700 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,756 psi | 64% | 2684 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,414 psi | 74% | 2743 fps | 100% |
| Hodgdon Retumbo | 54.7 gr | 80% | 33,127 psi | 51% | 2615 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 43% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,473 psi | 78% | 2802 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,734 psi | 78% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,947 psi | 68% | 2694 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 38,740 psi | 60% | 2680 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 90% | 34,490 psi | 53% | 2615 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 54,012 psi | 83% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,504 psi | 81% | 2831 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,143 psi | 54% | 2510 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 50,937 psi | 78% | 2851 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 28,369 psi | 44% | 2464 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 42,873 psi | 66% | 2776 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 52,272 psi | 80% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,435 psi | 59% | 2687 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 80% | 50,966 psi | 78% | 2851 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,592 psi | 53% | 2569 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,935 psi | 45% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,911 psi | 83% | 2890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,214 psi | 80% | 2913 fps | 100% |
| ReloadSwiss RS 76 | 58.6 gr | 80% | 32,300 psi | 50% | 2592 fps | 97.9% |
| ReloadSwiss RS 80 | 63.5 gr | 86% | 36,535 psi | 56% | 2677 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 45,687 psi | 70% | 2733 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 44,092 psi | 68% | 2740 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 80% | 54,940 psi | 85% | 2858 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,012 psi | 83% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,504 psi | 81% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,866 psi | 81% | 2782 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,758 psi | 67% | 2736 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 46,485 psi | 72% | 2723 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 49,879 psi | 77% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,541 psi | 69% | 2717 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 53,447 psi | 82% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,798 psi | 60% | 2592 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 92% | 49,327 psi | 76% | 2822 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 52,765 psi | 81% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,918 psi | 68% | 2726 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,714 psi | 66% | 2769 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 35,346 psi | 54% | 2585 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 86% | 37,913 psi | 58% | 2697 fps | 95% |
| Vihtavuori N570 | <<locked>> | 92% | 44,396 psi | 68% | 2874 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,837 psi | 81% | 2789 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,738 psi | 57% | 2703 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,031 psi | 63% | 2648 fps | 98.6% |
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 75 powders for 6.5 Weatherby RPM loaded with the .264 | 144gr | Lapua MaxRange Target OTM. Hodgdon Retumbo delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,120 fps. Accurate 8700 gives the best case fill at 100 %, and 75 of the 75 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 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2217, ADI AR 2218 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 MaxRange Target OTM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, Lovex D100, Ramshot LRT 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.