Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 102gr | CutEdge ESP Raptor bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 76, Hodgdon Retumbo 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 57,000 psi | 88% | 3333 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,638 psi | 89% | 3376 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 55,129 psi | 85% | 3428 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 90% | 56,304 psi | 87% | 3432 fps | 97.3% |
| ADI AR 2209 | <<locked>> | 88% | 55,114 psi | 85% | 3373 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 92% | 57,058 psi | 88% | 3442 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,579 psi | 86% | 3402 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,879 psi | 77% | 3340 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,129 psi | 85% | 3383 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,537 psi | 90% | 3428 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,232 psi | 88% | 3432 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,056 psi | 85% | 3350 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,955 psi | 85% | 3409 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,695 psi | 86% | 3432 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,334 psi | 90% | 3396 fps | 96.2% |
| Bofors RP15 | <<locked>> | 94% | 56,362 psi | 87% | 3419 fps | 99.1% |
| Bofors RP30 | <<locked>> | 98% | 54,723 psi | 84% | 3402 fps | 98.4% |
| Bofors RP5 | <<locked>> | 92% | 57,232 psi | 88% | 3432 fps | 99.2% |
| Bofors RP7 | <<locked>> | 82% | 55,593 psi | 86% | 3317 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 98% | 57,188 psi | 88% | 3432 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 82% | 55,492 psi | 85% | 3369 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 82% | 57,899 psi | 89% | 3392 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 90% | 56,739 psi | 87% | 3376 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,564 psi | 86% | 3353 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,187 psi | 85% | 3294 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,740 psi | 89% | 3560 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 56,420 psi | 87% | 3402 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 57% | 2218 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,856 psi | 89% | 3363 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,000 psi | 88% | 3343 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 58,073 psi | 89% | 3366 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,334 psi | 88% | 3360 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 92% | 55,071 psi | 85% | 3415 fps | 98.1% |
| Lovex S065 | <<locked>> | 84% | 57,899 psi | 89% | 3343 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,086 psi | 86% | 3333 fps | 99.8% |
| Lovex S071 | <<locked>> | 98% | 58,479 psi | 90% | 3356 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,376 psi | 85% | 3356 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,701 psi | 70% | 3248 fps | 98.3% |
| Norma MRP | <<locked>> | 90% | 57,450 psi | 88% | 3458 fps | 99.8% |
| Norma URP | <<locked>> | 84% | 55,869 psi | 86% | 3356 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,304 psi | 87% | 3442 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 84% | 55,129 psi | 85% | 3356 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 94% | 54,868 psi | 84% | 3360 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 58% | 2264 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,044 psi | 89% | 3399 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,695 psi | 87% | 3425 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,911 psi | 85% | 3474 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,302 psi | 84% | 3409 fps | 97.1% |
| Rottweil R 904 | <<locked>> | 88% | 56,028 psi | 86% | 3343 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 90% | 58,015 psi | 89% | 3412 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 82% | 55,593 psi | 86% | 3317 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,899 psi | 89% | 3343 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,086 psi | 86% | 3333 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,956 psi | 88% | 3287 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,595 psi | 89% | 3412 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 57,812 psi | 89% | 3330 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 57,116 psi | 88% | 3360 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,494 psi | 90% | 3379 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 57,928 psi | 89% | 3281 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,696 psi | 89% | 3350 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,436 psi | 90% | 3363 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 56,898 psi | 88% | 3350 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,826 psi | 87% | 3379 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,029 psi | 88% | 3451 fps | 98% |
| Vihtavuori N565 | <<locked>> | 96% | 57,479 psi | 88% | 3428 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 98% | 54,969 psi | 85% | 3422 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,609 psi | 89% | 3294 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,709 psi | 86% | 3373 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 94% | 58,276 psi | 90% | 3494 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,752 psi | 84% | 3310 fps | 98.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,391 psi | 58% | 2927 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 50,053 psi | 77% | 3241 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 44,251 psi | 68% | 3196 fps | 95.2% |
| Accurate MAGPRO | 75.8 gr | 86% | 48,443 psi | 75% | 3271 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 41,684 psi | 64% | 3084 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 46,064 psi | 71% | 3219 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 44,744 psi | 69% | 3173 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 35,172 psi | 54% | 2966 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,921 psi | 74% | 3248 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,756 psi | 64% | 3081 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 40,393 psi | 62% | 3074 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,100 psi | 56% | 2959 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 33,533 psi | 52% | 2917 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,466 psi | 62% | 3120 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,810 psi | 84% | 3323 fps | 95.3% |
| Bofors RP15 | <<locked>> | 86% | 43,033 psi | 66% | 3136 fps | 96.1% |
| Bofors RP30 | <<locked>> | 92% | 44,164 psi | 68% | 3179 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 40,393 psi | 62% | 3074 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 51,953 psi | 80% | 3248 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 42,743 psi | 66% | 3130 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 51,779 psi | 80% | 3297 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 54,099 psi | 83% | 3320 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 84% | 45,832 psi | 71% | 3153 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 48,211 psi | 74% | 3205 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,078 psi | 69% | 3110 fps | 100% |
| Hodgdon Retumbo | 73.4 gr | 88% | 40,408 psi | 62% | 3163 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 52,359 psi | 81% | 3330 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 43% | 1988 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,471 psi | 73% | 3163 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,577 psi | 82% | 3281 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 47,311 psi | 73% | 3173 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 47,065 psi | 72% | 3153 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 44,338 psi | 68% | 3186 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 50,836 psi | 78% | 3215 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 49,197 psi | 76% | 3202 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 34,113 psi | 53% | 2838 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 47,950 psi | 74% | 3205 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 36,637 psi | 56% | 3018 fps | 95% |
| Norma MRP | <<locked>> | 80% | 39,566 psi | 61% | 3077 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 48,776 psi | 75% | 3222 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 44,527 psi | 69% | 3199 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 47,877 psi | 74% | 3215 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 39,987 psi | 62% | 3051 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 44% | 2034 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,256 psi | 77% | 3261 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,863 psi | 75% | 3281 fps | 99.9% |
| ReloadSwiss RS 76 | 76.8 gr | 86% | 37,217 psi | 57% | 3058 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 50,125 psi | 77% | 3330 fps | 96% |
| Rottweil R 904 | <<locked>> | 82% | 45,905 psi | 71% | 3136 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 41,089 psi | 63% | 3061 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 51,953 psi | 80% | 3248 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,836 psi | 78% | 3215 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 49,197 psi | 76% | 3202 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,850 psi | 77% | 3156 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,770 psi | 63% | 3058 fps | 95.5% |
| Somchem S361 | <<locked>> | 82% | 47,021 psi | 72% | 3120 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 46,151 psi | 71% | 3169 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,553 psi | 64% | 3041 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 54,114 psi | 83% | 3219 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,430 psi | 78% | 3222 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 38,609 psi | 59% | 2959 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 49,705 psi | 76% | 3219 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 40,393 psi | 62% | 3051 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 84% | 45,890 psi | 71% | 3222 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 46,485 psi | 72% | 3205 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 50,879 psi | 78% | 3340 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,893 psi | 77% | 3169 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,996 psi | 80% | 3304 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,924 psi | 51% | 2966 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 41,060 psi | 63% | 3022 fps | 95.6% |
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 70 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 102gr | CutEdge ESP Raptor. Hodgdon Retumbo delivers the highest muzzle velocity at 3,560 fps; across all powders the maximum-charge window runs from 2,218 fps to 3,560 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 102.0 gr projectile in 0.264" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Hodgdon TrailBoss 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. ReloadSwiss RS 76, Hodgdon Retumbo, Accurate MAGPRO rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 102gr | CutEdge ESP Raptor 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.