Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 93gr | RWS Evolution Green bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo and ReloadSwiss RS 76.
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% | 55,071 psi | 85% | 3415 fps | 99.8% |
| Accurate 4350 | <<locked>> | 84% | 55,608 psi | 86% | 3461 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,956 psi | 88% | 3576 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 92% | 58,233 psi | 90% | 3576 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 90% | 56,927 psi | 88% | 3520 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 92% | 55,071 psi | 85% | 3517 fps | 97.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,301 psi | 82% | 3461 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,834 psi | 74% | 3396 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,681 psi | 87% | 3533 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,175 psi | 90% | 3547 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,594 psi | 87% | 3504 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,216 psi | 85% | 3507 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,579 psi | 87% | 3491 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,608 psi | 87% | 3553 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,624 psi | 89% | 3583 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 58,291 psi | 90% | 3563 fps | 98.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,507 psi | 87% | 3543 fps | 98.2% |
| Bofors RP5 | <<locked>> | 92% | 55,216 psi | 85% | 3507 fps | 98.5% |
| Bofors RP7 | <<locked>> | 84% | 57,450 psi | 88% | 3465 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 98% | 55,071 psi | 85% | 3501 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 57,421 psi | 88% | 3520 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 82% | 55,970 psi | 86% | 3471 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 92% | 58,653 psi | 90% | 3517 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,479 psi | 88% | 3497 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,971 psi | 88% | 3442 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,390 psi | 85% | 3622 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 84% | 58,726 psi | 90% | 3556 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 57% | 2313 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,115 psi | 86% | 3445 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,361 psi | 85% | 3432 fps | 99.3% |
| IMR 4831 | <<locked>> | 86% | 56,101 psi | 86% | 3455 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,419 psi | 85% | 3432 fps | 97% |
| IMR 7828 SSC | <<locked>> | 94% | 57,014 psi | 88% | 3563 fps | 97.8% |
| Lovex S065 | <<locked>> | 84% | 56,101 psi | 86% | 3428 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 58,146 psi | 89% | 3484 fps | 99.7% |
| Lovex S071 | <<locked>> | 98% | 56,246 psi | 87% | 3432 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 57,246 psi | 88% | 3501 fps | 98.5% |
| Norma 217ᴾ | <<locked>> | 100% | 43,540 psi | 67% | 3297 fps | 96.9% |
| Norma MRP | <<locked>> | 90% | 55,274 psi | 85% | 3530 fps | 99.3% |
| Norma URP | <<locked>> | 86% | 57,899 psi | 89% | 3507 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 58,102 psi | 89% | 3586 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 56,869 psi | 88% | 3501 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 96% | 56,956 psi | 88% | 3504 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 58% | 2362 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,043 psi | 86% | 3481 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 58,798 psi | 90% | 3579 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,913 psi | 88% | 3622 fps | 99.9% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,376 psi | 87% | 3553 fps | 96.8% |
| Rottweil R 904 | <<locked>> | 90% | 57,943 psi | 89% | 3488 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 90% | 56,028 psi | 86% | 3494 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 84% | 57,450 psi | 88% | 3465 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,101 psi | 86% | 3428 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 58,146 psi | 89% | 3484 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,392 psi | 90% | 3333 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,317 psi | 85% | 3369 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,608 psi | 86% | 3488 fps | 98.5% |
| Somchem S355 | <<locked>> | 82% | 58,334 psi | 90% | 3465 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 55,883 psi | 86% | 3402 fps | 97% |
| Somchem S365 | <<locked>> | 86% | 54,955 psi | 85% | 3445 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,492 psi | 87% | 3458 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 56,173 psi | 86% | 3373 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,854 psi | 86% | 3438 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,463 psi | 87% | 3438 fps | 99% |
| Vihtavuori N550 | <<locked>> | 84% | 55,042 psi | 85% | 3435 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 58,450 psi | 90% | 3524 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,955 psi | 85% | 3524 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 96% | 55,317 psi | 85% | 3494 fps | 97.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,681 psi | 87% | 3560 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,724 psi | 86% | 3379 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,624 psi | 89% | 3524 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,637 psi | 86% | 3573 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,608 psi | 87% | 3451 fps | 98.6% |
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% | 35,868 psi | 55% | 2986 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 48,196 psi | 74% | 3317 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 49,095 psi | 76% | 3412 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 90% | 54,085 psi | 83% | 3497 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 82% | 43,120 psi | 66% | 3228 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 47,747 psi | 73% | 3360 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 46,296 psi | 71% | 3307 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 94% | 38,783 psi | 60% | 3163 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,209 psi | 71% | 3330 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,998 psi | 83% | 3474 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 43,120 psi | 66% | 3215 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 44,788 psi | 69% | 3284 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,563 psi | 53% | 3018 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 34,490 psi | 53% | 3038 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,696 psi | 60% | 3176 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 44,164 psi | 68% | 3268 fps | 95.5% |
| Bofors RP30 | <<locked>> | 94% | 45,542 psi | 70% | 3310 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 44,788 psi | 69% | 3284 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 50,444 psi | 78% | 3330 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 92% | 44,121 psi | 68% | 3261 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 49,922 psi | 77% | 3373 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 52,402 psi | 81% | 3402 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 51,053 psi | 79% | 3373 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 50,009 psi | 77% | 3350 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,308 psi | 67% | 3186 fps | 99.9% |
| Hodgdon Retumbo | 77 gr | 90% | 41,611 psi | 64% | 3294 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,270 psi | 77% | 3396 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 42% | 2077 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,977 psi | 71% | 3241 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,851 psi | 80% | 3363 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 45,672 psi | 70% | 3251 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 48,762 psi | 75% | 3294 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 90% | 49,342 psi | 76% | 3406 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 49,342 psi | 76% | 3297 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 47,630 psi | 73% | 3278 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 35,085 psi | 54% | 2963 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 46,398 psi | 71% | 3278 fps | 96.1% |
| Norma 217 | <<locked>> | 98% | 40,379 psi | 62% | 3215 fps | 95.7% |
| Norma MRP | <<locked>> | 82% | 40,973 psi | 63% | 3215 fps | 96% |
| Norma URP | <<locked>> | 80% | 47,108 psi | 73% | 3304 fps | 99.6% |
| Ramshot Grand | <<locked>> | 88% | 46,180 psi | 71% | 3340 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 46,267 psi | 71% | 3287 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 41,336 psi | 64% | 3179 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,239 psi | 43% | 2126 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,443 psi | 75% | 3333 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,905 psi | 72% | 3353 fps | 99.4% |
| ReloadSwiss RS 76 | 80.6 gr | 88% | 38,522 psi | 59% | 3186 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 51,837 psi | 80% | 3465 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 84% | 47,282 psi | 73% | 3274 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 42,293 psi | 65% | 3192 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 50,444 psi | 78% | 3330 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,342 psi | 76% | 3297 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 47,630 psi | 73% | 3278 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,810 psi | 84% | 3281 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,356 psi | 74% | 3235 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 41,945 psi | 65% | 3189 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 54,810 psi | 84% | 3406 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 48,675 psi | 75% | 3258 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 44,338 psi | 68% | 3248 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,987 psi | 62% | 3104 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 52,504 psi | 81% | 3314 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,718 psi | 75% | 3304 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 84% | 39,943 psi | 61% | 3091 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 47,979 psi | 74% | 3297 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 38,595 psi | 59% | 3114 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 88% | 51,024 psi | 79% | 3438 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 47,906 psi | 74% | 3337 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 52,504 psi | 81% | 3474 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,153 psi | 74% | 3251 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,140 psi | 77% | 3376 fps | 98.6% |
| Winchester StaBALL HD | 70.3 gr | 80% | 31,038 psi | 48% | 3005 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 42,482 psi | 65% | 3156 fps | 95.2% |
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 72 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 93gr | RWS Evolution Green. Hodgdon Retumbo delivers the highest muzzle velocity at 3,622 fps; across all powders the maximum-charge window runs from 2,313 fps to 3,622 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 93.0 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, Bofors RP30 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. Winchester StaBALL HD, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 93gr | RWS Evolution Green 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.