Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 130gr | THAC EDH bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-16.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 44,237 psi | 86% | 2615 fps | 97.3% |
| Accurate 4350 | <<locked>> | 90% | 46,325 psi | 90% | 2671 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 44,730 psi | 87% | 2566 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 45,078 psi | 88% | 2595 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 44,715 psi | 87% | 2674 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 44,686 psi | 87% | 2694 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,237 psi | 86% | 2690 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,030 psi | 76% | 2592 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 46,427 psi | 90% | 2799 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 45,368 psi | 88% | 2608 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 45,513 psi | 88% | 2575 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 82% | 45,788 psi | 89% | 2612 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 88% | 45,513 psi | 88% | 2661 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 44,396 psi | 86% | 2615 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 45,020 psi | 87% | 2677 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 71% | 1686 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 45,571 psi | 89% | 2602 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,222 psi | 86% | 2556 fps | 96.1% |
| IMR 4831 | <<locked>> | 90% | 44,280 psi | 86% | 2618 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 44,295 psi | 86% | 2559 fps | 97.5% |
| Lovex S070 | <<locked>> | 88% | 44,831 psi | 87% | 2589 fps | 96.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,479 psi | 77% | 2526 fps | 96% |
| Norma MRP | <<locked>> | 98% | 46,209 psi | 90% | 2753 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 45,687 psi | 89% | 2661 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 90% | 44,483 psi | 86% | 2651 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 72% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,905 psi | 89% | 2592 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 44,570 psi | 87% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 45,832 psi | 89% | 2690 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 44,976 psi | 87% | 2700 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 84% | 45,513 psi | 88% | 2605 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 45,513 psi | 88% | 2575 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 44,295 psi | 86% | 2559 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 88% | 44,831 psi | 87% | 2589 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 46,369 psi | 90% | 2654 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 44,382 psi | 86% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,383 psi | 90% | 2556 fps | 96.7% |
| Somchem S355 | <<locked>> | 84% | 45,948 psi | 89% | 2605 fps | 99.8% |
| Somchem S365 | <<locked>> | 92% | 43,947 psi | 85% | 2667 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 46,514 psi | 90% | 2651 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 84% | 43,772 psi | 85% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 44,512 psi | 86% | 2602 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 88% | 44,063 psi | 86% | 2612 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 98% | 46,253 psi | 90% | 2713 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 44,164 psi | 86% | 2582 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 45,513 psi | 88% | 2661 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,813 psi | 77% | 2717 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 36,550 psi | 71% | 2464 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 33,547 psi | 65% | 2408 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,351 psi | 82% | 2520 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,395 psi | 82% | 2546 fps | 99.6% |
| Alliant Reloder-16 | 35.3 gr | 80% | 33,199 psi | 64% | 2411 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,912 psi | 72% | 2533 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,327 psi | 57% | 2336 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,796 psi | 71% | 2536 fps | 95.3% |
| Alliant Reloder-26 | 43.8 gr | 90% | 35,534 psi | 69% | 2559 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 42,583 psi | 83% | 2559 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,873 psi | 83% | 2526 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 43,033 psi | 84% | 2559 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 40,016 psi | 78% | 2552 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,705 psi | 60% | 2316 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 86% | 42,119 psi | 82% | 2618 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 53% | 1503 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,902 psi | 83% | 2549 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,698 psi | 81% | 2503 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 32,430 psi | 63% | 2365 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 37,057 psi | 72% | 2411 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 39,827 psi | 77% | 2490 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 37,289 psi | 72% | 2480 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 43,410 psi | 84% | 2697 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 33,402 psi | 65% | 2402 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 86% | 39,175 psi | 76% | 2543 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 53% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,207 psi | 84% | 2539 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,146 psi | 76% | 2592 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,083 psi | 64% | 2421 fps | 95.3% |
| ReloadSwiss RS 70 | 39.5 gr | 82% | 34,679 psi | 67% | 2467 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 40,219 psi | 78% | 2503 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,873 psi | 83% | 2526 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,057 psi | 72% | 2411 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 39,827 psi | 77% | 2490 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,756 psi | 79% | 2549 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,669 psi | 81% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,017 psi | 80% | 2454 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 40,625 psi | 79% | 2503 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 30,182 psi | 59% | 2362 fps | 98% |
| Somchem S385 | <<locked>> | 94% | 43,758 psi | 85% | 2602 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 38,711 psi | 75% | 2441 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,679 psi | 67% | 2402 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 34,345 psi | 67% | 2405 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 84% | 29,921 psi | 58% | 2362 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,229 psi | 66% | 2379 fps | 98.1% |
| Winchester 760 | <<locked>> | 84% | 40,234 psi | 78% | 2556 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,644 psi | 54% | 2356 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 47 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 130gr | THAC EDH. Alliant Reloder-26 delivers the highest muzzle velocity at 2,799 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,799 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, 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. Alliant Reloder-26, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 130gr | THAC EDH 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.