Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 100gr | Barnes TAC-TX BT bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 58,682 psi | 90% | 3301 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 56,463 psi | 87% | 3333 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 56,304 psi | 87% | 3386 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 55,637 psi | 86% | 3310 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,943 psi | 89% | 3445 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,245 psi | 85% | 3481 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 55,985 psi | 86% | 3356 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,216 psi | 85% | 3432 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 57,058 psi | 88% | 3497 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,506 psi | 85% | 3428 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,826 psi | 87% | 3379 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,014 psi | 88% | 3406 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,955 psi | 85% | 3448 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,376 psi | 87% | 3468 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 58,508 psi | 90% | 3484 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,492 psi | 87% | 3491 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,232 psi | 88% | 3465 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,298 psi | 76% | 3386 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 58,233 psi | 90% | 3566 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,071 psi | 85% | 3461 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 58,117 psi | 89% | 3399 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,492 psi | 87% | 3491 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 57,203 psi | 88% | 3389 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,805 psi | 75% | 3320 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 84% | 58,291 psi | 90% | 3422 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,246 psi | 87% | 3442 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 55,448 psi | 85% | 3396 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 57,043 psi | 88% | 3428 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,651 psi | 86% | 3406 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,172 psi | 85% | 3356 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,312 psi | 74% | 3435 fps | 98% |
| Hodgdon Superformance | <<locked>> | 88% | 57,058 psi | 88% | 3481 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 56% | 2185 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,201 psi | 85% | 3337 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,812 psi | 89% | 3379 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 58,769 psi | 90% | 3425 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,259 psi | 85% | 3356 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 58,131 psi | 89% | 3428 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 58,537 psi | 90% | 3438 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 58,015 psi | 89% | 3412 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 58,305 psi | 90% | 3533 fps | 98% |
| Lovex S062 | <<locked>> | 82% | 55,361 psi | 85% | 3323 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,550 psi | 85% | 3353 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 57,203 psi | 88% | 3402 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,922 psi | 77% | 3274 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 56,318 psi | 87% | 3389 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,086 psi | 86% | 3422 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 56,130 psi | 86% | 3514 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 56,420 psi | 87% | 3425 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,682 psi | 89% | 3419 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,998 psi | 85% | 3481 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 55,274 psi | 85% | 3422 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,214 psi | 82% | 3402 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 57% | 2234 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 58,146 psi | 89% | 3402 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,666 psi | 86% | 3458 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 58,117 psi | 89% | 3468 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,608 psi | 87% | 3501 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,950 psi | 75% | 3432 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 57,145 psi | 88% | 3340 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 58,218 psi | 90% | 3396 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,608 psi | 87% | 3396 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 57,885 psi | 89% | 3471 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 57,203 psi | 88% | 3389 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,550 psi | 85% | 3353 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 55,361 psi | 85% | 3323 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,203 psi | 88% | 3402 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,159 psi | 86% | 3399 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,465 psi | 90% | 3258 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,129 psi | 85% | 3297 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,421 psi | 88% | 3465 fps | 98.8% |
| Somchem S355 | <<locked>> | 86% | 57,856 psi | 89% | 3389 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 58,769 psi | 90% | 3386 fps | 97.3% |
| Somchem S365 | <<locked>> | 92% | 56,347 psi | 87% | 3425 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 58,320 psi | 90% | 3435 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 57,957 psi | 89% | 3294 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,218 psi | 90% | 3310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,767 psi | 86% | 3304 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 58,581 psi | 90% | 3419 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 3406 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 56,507 psi | 87% | 3304 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,493 psi | 88% | 3419 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,637 psi | 86% | 3435 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,115 psi | 86% | 3501 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,692 psi | 80% | 3389 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 58,610 psi | 90% | 3373 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,246 psi | 87% | 3442 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,085 psi | 83% | 3543 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,737 psi | 84% | 3363 fps | 98.2% |
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 2495 | <<locked>> | 80% | 55,100 psi | 85% | 3248 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,707 psi | 81% | 3264 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 34,171 psi | 53% | 2913 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 52,315 psi | 80% | 3258 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,451 psi | 62% | 3104 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 94% | 51,300 psi | 79% | 3406 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 49,153 psi | 76% | 3235 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 42,018 psi | 65% | 3153 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 49,429 psi | 76% | 3346 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,221 psi | 65% | 3153 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,053 psi | 77% | 3264 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,403 psi | 82% | 3343 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,131 psi | 60% | 3120 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,252 psi | 70% | 3268 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,785 psi | 64% | 3143 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,467 psi | 65% | 3199 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,703 psi | 44% | 2818 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,851 psi | 51% | 2963 fps | 95.2% |
| Alliant Reloder-26 | 60.7 gr | 80% | 31,009 psi | 48% | 2943 fps | 95.1% |
| Bofors RP15 | <<locked>> | 92% | 42,090 psi | 65% | 3189 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 50,560 psi | 78% | 3274 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,467 psi | 65% | 3199 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 43,961 psi | 68% | 3123 fps | 96.8% |
| Hodgdon H1000 | <<locked>> | 98% | 45,498 psi | 70% | 3245 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 50,836 psi | 78% | 3291 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,627 psi | 66% | 3166 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 45,353 psi | 70% | 3189 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 92% | 49,487 psi | 76% | 3287 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,953 psi | 80% | 3337 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,608 psi | 56% | 2989 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,206 psi | 65% | 3278 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 41,800 psi | 64% | 3173 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 42% | 1955 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,706 psi | 80% | 3274 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,983 psi | 83% | 3310 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 39,755 psi | 61% | 3041 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,585 psi | 70% | 3163 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 38,711 psi | 60% | 3048 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 54,824 psi | 84% | 3379 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,995 psi | 78% | 3281 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 94% | 47,297 psi | 73% | 3314 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 52,112 psi | 80% | 3271 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,033 psi | 66% | 3104 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 41,249 psi | 63% | 3081 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 35,592 psi | 55% | 2953 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 52,765 psi | 81% | 3330 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,395 psi | 65% | 3136 fps | 95% |
| Norma MRP | 63.4 gr | 86% | 38,899 psi | 60% | 3143 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 40,161 psi | 62% | 3100 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 53,780 psi | 83% | 3353 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 47,340 psi | 73% | 3323 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 39,030 psi | 60% | 3081 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 92% | 39,189 psi | 60% | 3097 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 2005 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,894 psi | 78% | 3271 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,109 psi | 74% | 3330 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,524 psi | 62% | 3123 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,204 psi | 60% | 3136 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,986 psi | 60% | 3179 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 53,795 psi | 83% | 3287 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,572 psi | 73% | 3212 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,586 psi | 72% | 3199 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 43,932 psi | 68% | 3196 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 43,961 psi | 68% | 3123 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,033 psi | 66% | 3104 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 52,112 psi | 80% | 3271 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,249 psi | 63% | 3081 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,008 psi | 75% | 3274 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,341 psi | 74% | 3100 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,047 psi | 65% | 3035 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,555 psi | 67% | 3189 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 47,703 psi | 73% | 3212 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,227 psi | 79% | 3251 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,738 psi | 57% | 3048 fps | 99.8% |
| Somchem S385 | <<locked>> | 84% | 38,827 psi | 60% | 3035 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 54,172 psi | 83% | 3238 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,534 psi | 84% | 3255 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,643 psi | 70% | 3127 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,597 psi | 64% | 3100 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 41,234 psi | 63% | 3081 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 52,750 psi | 81% | 3245 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,988 psi | 63% | 3097 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 31,937 psi | 49% | 2910 fps | 96.7% |
| Vihtavuori N560 | 67.8 gr | 92% | 48,689 psi | 75% | 3356 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 48,225 psi | 74% | 3320 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,901 psi | 63% | 3061 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,627 psi | 66% | 3166 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,266 psi | 39% | 2769 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,121 psi | 68% | 3156 fps | 95.8% |
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 89 powders for 6.5 Weatherby RPM loaded with the .264 | 100gr | Barnes TAC-TX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,566 fps; across all powders the maximum-charge window runs from 2,185 fps to 3,566 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 6.5 Weatherby RPM with the .264 | 100gr | Barnes TAC-TX 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.