Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 127gr | Barnes LRX BT bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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% | 56,927 psi | 88% | 3074 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,204 psi | 90% | 3107 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,042 psi | 85% | 3179 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 55,927 psi | 86% | 3182 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 58,653 psi | 90% | 3058 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 55,579 psi | 86% | 3120 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 57,116 psi | 88% | 3186 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,401 psi | 79% | 3081 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,818 psi | 70% | 3035 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,666 psi | 86% | 3114 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,434 psi | 85% | 3110 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,666 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,998 psi | 85% | 3104 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,145 psi | 88% | 3176 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,581 psi | 90% | 3140 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,030 psi | 89% | 3209 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,143 psi | 85% | 3179 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,566 psi | 90% | 3140 fps | 97.5% |
| Bofors RP15 | <<locked>> | 96% | 56,246 psi | 87% | 3163 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,867 psi | 83% | 3150 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 57,145 psi | 88% | 3176 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 56,637 psi | 87% | 3054 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,855 psi | 87% | 3173 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,101 psi | 86% | 3110 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 58,639 psi | 90% | 3123 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 56,782 psi | 87% | 3117 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,666 psi | 86% | 3097 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,767 psi | 86% | 3028 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,043 psi | 88% | 3294 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,811 psi | 87% | 3150 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,072 psi | 57% | 1949 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,436 psi | 90% | 3097 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,001 psi | 89% | 3077 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 58,378 psi | 90% | 3094 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,667 psi | 89% | 3097 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 55,027 psi | 85% | 3163 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,104 psi | 63% | 2927 fps | 96.7% |
| Lovex S065 | <<locked>> | 86% | 58,668 psi | 90% | 3071 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,768 psi | 87% | 3071 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,088 psi | 89% | 3091 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,970 psi | 86% | 3100 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,379 psi | 64% | 2953 fps | 98.8% |
| Norma MRP | <<locked>> | 92% | 57,203 psi | 88% | 3199 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,420 psi | 87% | 3091 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,738 psi | 86% | 3182 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 55,521 psi | 85% | 3100 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,494 psi | 90% | 3173 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 58% | 1995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,479 psi | 90% | 3133 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,014 psi | 88% | 3166 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 58,218 psi | 90% | 3294 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,910 psi | 81% | 3169 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 82% | 57,769 psi | 89% | 3045 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,434 psi | 87% | 3084 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 58,276 psi | 90% | 3153 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 56,637 psi | 87% | 3054 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,668 psi | 90% | 3071 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,768 psi | 87% | 3071 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,479 psi | 88% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,972 psi | 89% | 3025 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,841 psi | 89% | 3150 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 57,348 psi | 88% | 3038 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,204 psi | 90% | 3077 fps | 99% |
| Somchem S365 | <<locked>> | 88% | 57,203 psi | 88% | 3091 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 58,494 psi | 90% | 3117 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,056 psi | 85% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,407 psi | 90% | 3081 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 58,407 psi | 90% | 3100 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 57,348 psi | 88% | 3084 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,652 psi | 87% | 3110 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,985 psi | 88% | 3199 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 98% | 56,637 psi | 87% | 3173 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,693 psi | 83% | 3173 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,030 psi | 89% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,391 psi | 87% | 3114 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,014 psi | 88% | 3228 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,926 psi | 85% | 3058 fps | 99.6% |
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% | 35,027 psi | 54% | 2661 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 47,195 psi | 73% | 2933 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 38,421 psi | 59% | 2838 fps | 95.4% |
| Accurate MAGPRO | 60.7 gr | 84% | 41,785 psi | 64% | 2907 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 55,158 psi | 85% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 39,407 psi | 61% | 2805 fps | 96.8% |
| ADI AR 2213 | <<locked>> | 84% | 40,248 psi | 62% | 2854 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 92% | 38,957 psi | 60% | 2818 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 88% | 30,589 psi | 47% | 2641 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,798 psi | 61% | 2805 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,484 psi | 70% | 2943 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,808 psi | 81% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,436 psi | 61% | 2799 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,186 psi | 54% | 2733 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,823 psi | 52% | 2690 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,298 psi | 45% | 2592 fps | 96.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,405 psi | 58% | 2844 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,472 psi | 75% | 2956 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 34,940 psi | 54% | 2723 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 37,927 psi | 58% | 2828 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 35,186 psi | 54% | 2733 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 49,748 psi | 77% | 2940 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 37,101 psi | 57% | 2776 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 48,994 psi | 75% | 2989 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,547 psi | 79% | 3005 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 40,147 psi | 62% | 2795 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,250 psi | 65% | 2844 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,656 psi | 66% | 2812 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 35,114 psi | 54% | 2815 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 48,921 psi | 75% | 3018 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 43% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,208 psi | 70% | 2867 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,082 psi | 79% | 2963 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,788 psi | 69% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,742 psi | 64% | 2799 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 84% | 38,856 psi | 60% | 2835 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,421 psi | 59% | 2861 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 48,573 psi | 75% | 2910 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,905 psi | 72% | 2897 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 29,921 psi | 46% | 2523 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 45,484 psi | 70% | 2910 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 31,227 psi | 48% | 2690 fps | 95% |
| Norma MRP | 56.8 gr | 80% | 36,999 psi | 57% | 2805 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 46,325 psi | 71% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,435 psi | 59% | 2835 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,310 psi | 70% | 2920 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 34,229 psi | 53% | 2703 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,326 psi | 73% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,556 psi | 70% | 2976 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,923 psi | 49% | 2713 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,626 psi | 64% | 2946 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 54,201 psi | 83% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,669 psi | 63% | 2782 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 38,740 psi | 60% | 2782 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 49,748 psi | 77% | 2940 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,573 psi | 75% | 2910 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,905 psi | 72% | 2897 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,983 psi | 83% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,543 psi | 73% | 2854 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,406 psi | 59% | 2776 fps | 96.7% |
| Somchem S355 | <<locked>> | 80% | 53,911 psi | 83% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,336 psi | 64% | 2766 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 43,410 psi | 67% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,218 psi | 60% | 2762 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 51,692 psi | 80% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,805 psi | 74% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,939 psi | 52% | 2628 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,137 psi | 73% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,855 psi | 58% | 2769 fps | 99.8% |
| Vihtavuori N560 | 58.2 gr | 82% | 39,900 psi | 61% | 2861 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 88% | 40,103 psi | 62% | 2851 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 43,004 psi | 66% | 2963 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,949 psi | 72% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,211 psi | 76% | 2992 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,037 psi | 46% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,766 psi | 55% | 2680 fps | 95.7% |
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 77 powders for 6.5 Weatherby RPM loaded with the .264 | 127gr | Barnes LRX BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,294 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,294 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 127.0 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 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for 6.5 Weatherby RPM with the .264 | 127gr | Barnes LRX BT 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.