Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 97gr | IBEX TRD bullet and 57 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 Ramshot Grand.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 56,623 psi | 87% | 3373 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 57,609 psi | 89% | 3524 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 88% | 58,595 psi | 90% | 3524 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 86% | 56,507 psi | 87% | 3448 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 88% | 54,926 psi | 85% | 3448 fps | 97.8% |
| ADI AR 2217 | <<locked>> | 98% | 57,609 psi | 89% | 3488 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,434 psi | 87% | 3510 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,536 psi | 87% | 3458 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,260 psi | 87% | 3438 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,811 psi | 86% | 3455 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,464 psi | 88% | 3438 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,653 psi | 89% | 3504 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 58,682 psi | 90% | 3530 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 58,798 psi | 90% | 3507 fps | 99.2% |
| Bofors RP30 | <<locked>> | 96% | 57,972 psi | 89% | 3504 fps | 98.8% |
| Bofors RP5 | <<locked>> | 88% | 55,811 psi | 86% | 3455 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 94% | 55,187 psi | 85% | 3445 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 88% | 58,059 psi | 89% | 3448 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,985 psi | 88% | 3428 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,072 psi | 88% | 3376 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,536 psi | 87% | 3583 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,666 psi | 58% | 2283 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,477 psi | 85% | 3373 fps | 99.4% |
| IMR 4831 | <<locked>> | 82% | 56,492 psi | 87% | 3392 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 58,450 psi | 90% | 3428 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 90% | 57,217 psi | 88% | 3501 fps | 98.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,040 psi | 80% | 3406 fps | 97.7% |
| Lovex S070 | <<locked>> | 82% | 58,030 psi | 89% | 3415 fps | 99.9% |
| Lovex S071 | <<locked>> | 94% | 58,291 psi | 90% | 3402 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,681 psi | 87% | 3432 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 53,156 psi | 82% | 3445 fps | 99.4% |
| Norma MRP | <<locked>> | 86% | 55,883 psi | 86% | 3478 fps | 99.7% |
| Norma URP | <<locked>> | 82% | 57,812 psi | 89% | 3438 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 58,624 psi | 90% | 3530 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 82% | 56,753 psi | 87% | 3432 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 92% | 57,464 psi | 88% | 3451 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,696 psi | 60% | 2336 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 58,407 psi | 90% | 3504 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,740 psi | 89% | 3573 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,653 psi | 89% | 3517 fps | 97.6% |
| Rottweil R 904 | <<locked>> | 86% | 57,305 psi | 88% | 3415 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 86% | 56,246 psi | 87% | 3432 fps | 99% |
| Shooters World SW4350 | <<locked>> | 82% | 58,030 psi | 89% | 3415 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 58,436 psi | 90% | 3363 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,927 psi | 86% | 3428 fps | 99% |
| Somchem S361 | <<locked>> | 84% | 55,521 psi | 85% | 3337 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 55,680 psi | 86% | 3389 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,000 psi | 88% | 3406 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 90% | 56,550 psi | 87% | 3379 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 82% | 58,697 psi | 90% | 3428 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 56,289 psi | 87% | 3415 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,230 psi | 85% | 3465 fps | 97.4% |
| Vihtavuori N565 | <<locked>> | 92% | 56,623 psi | 87% | 3458 fps | 98% |
| Vihtavuori N568 | <<locked>> | 96% | 57,841 psi | 89% | 3520 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 58,784 psi | 90% | 3363 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,551 psi | 89% | 3533 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,463 psi | 87% | 3389 fps | 99% |
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% | 43,685 psi | 67% | 3117 fps | 98.6% |
| Accurate High Country | <<locked>> | 80% | 47,050 psi | 72% | 3304 fps | 96% |
| Accurate MAGPRO | <<locked>> | 84% | 51,126 psi | 79% | 3373 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 46,441 psi | 71% | 3241 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 82% | 44,846 psi | 69% | 3232 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 90% | 44,193 psi | 68% | 3202 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 35,882 psi | 55% | 3025 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,040 psi | 82% | 3396 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,543 psi | 72% | 3238 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,004 psi | 66% | 3179 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,727 psi | 64% | 3136 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,230 psi | 56% | 3031 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,050 psi | 72% | 3314 fps | 99.8% |
| Bofors RP15 | <<locked>> | 82% | 42,786 psi | 66% | 3173 fps | 95.8% |
| Bofors RP30 | <<locked>> | 88% | 44,454 psi | 68% | 3228 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 43,004 psi | 66% | 3179 fps | 96% |
| Hodgdon H1000 | <<locked>> | 86% | 42,163 psi | 65% | 3156 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 82% | 47,659 psi | 73% | 3238 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 46,789 psi | 72% | 3222 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,444 psi | 78% | 3261 fps | 100% |
| Hodgdon Retumbo | 73.5 gr | 84% | 40,437 psi | 62% | 3205 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,427 psi | 44% | 2054 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,025 psi | 80% | 3304 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 53,069 psi | 82% | 3330 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,527 psi | 70% | 3163 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 46,615 psi | 72% | 3284 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 45,643 psi | 70% | 3268 fps | 95.9% |
| Lovex S070 | <<locked>> | 80% | 54,621 psi | 84% | 3356 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 37,971 psi | 58% | 2979 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 53,026 psi | 82% | 3360 fps | 98.3% |
| Norma 217 | <<locked>> | 90% | 37,898 psi | 58% | 3094 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 45,571 psi | 70% | 3261 fps | 98% |
| Norma URP | <<locked>> | 80% | 54,288 psi | 84% | 3376 fps | 100% |
| Ramshot Grand | 73.8 gr | 82% | 43,772 psi | 67% | 3222 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 53,200 psi | 82% | 3366 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 39,914 psi | 61% | 3087 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 45% | 2103 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 54,505 psi | 84% | 3435 fps | 100% |
| ReloadSwiss RS 76 | 76.8 gr | 82% | 37,550 psi | 58% | 3104 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 49,864 psi | 77% | 3363 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 47,413 psi | 73% | 3219 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 46,369 psi | 71% | 3232 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 54,621 psi | 84% | 3356 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 54,955 psi | 85% | 3304 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,006 psi | 71% | 3225 fps | 97% |
| Somchem S361 | <<locked>> | 80% | 48,791 psi | 75% | 3202 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 52,011 psi | 80% | 3323 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,108 psi | 73% | 3209 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 80% | 41,104 psi | 63% | 3058 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 55,027 psi | 85% | 3366 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 46,673 psi | 72% | 3235 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 48,312 psi | 74% | 3320 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 86% | 46,630 psi | 72% | 3251 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 92% | 50,415 psi | 78% | 3373 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 54,955 psi | 85% | 3301 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,624 psi | 61% | 3186 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,279 psi | 67% | 3117 fps | 96.2% |
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 57 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 97gr | IBEX TRD. Hodgdon Retumbo delivers the highest muzzle velocity at 3,583 fps; across all powders the maximum-charge window runs from 2,283 fps to 3,583 fps. ADI AR 2225 gives the best case fill at 100 %, and 57 of the 57 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 97.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Hodgdon TrailBoss, IMR 8133 Enduron 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, Ramshot Grand rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 97gr | IBEX TRD 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.