Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 140gr | Hornady A-MAX bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
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% | 46,470 psi | 90% | 2589 fps | 98.7% |
| Accurate 4350 | <<locked>> | 88% | 45,847 psi | 89% | 2595 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 44,222 psi | 86% | 2598 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 44,193 psi | 86% | 2615 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,543 psi | 90% | 2618 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,398 psi | 90% | 2661 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 43,859 psi | 85% | 2612 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,944 psi | 80% | 2582 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 46,238 psi | 90% | 2726 fps | 99.7% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,687 psi | 89% | 2648 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 46,398 psi | 90% | 2661 fps | 96.5% |
| Bofors RP7 | <<locked>> | 84% | 44,324 psi | 86% | 2497 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 86% | 44,991 psi | 87% | 2585 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 84% | 45,324 psi | 88% | 2549 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 43,976 psi | 85% | 2536 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,193 psi | 86% | 2605 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 70% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,889 psi | 87% | 2530 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,948 psi | 89% | 2526 fps | 97.6% |
| IMR 4831 | <<locked>> | 90% | 46,456 psi | 90% | 2589 fps | 99.7% |
| Lovex S065 | <<locked>> | 86% | 45,788 psi | 89% | 2526 fps | 98.7% |
| Lovex S070 | <<locked>> | 86% | 43,961 psi | 85% | 2513 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,394 psi | 80% | 2500 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 45,977 psi | 89% | 2687 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 45,136 psi | 88% | 2582 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 43,874 psi | 85% | 2575 fps | 98.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,308 psi | 84% | 2585 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 72% | 1683 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 43,845 psi | 85% | 2612 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 45,324 psi | 88% | 2608 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 44,164 psi | 86% | 2625 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 82% | 44,382 psi | 86% | 2516 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 45,281 psi | 88% | 2598 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 84% | 44,324 psi | 86% | 2497 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 45,788 psi | 89% | 2526 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,961 psi | 85% | 2513 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 45,629 psi | 89% | 2569 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 45,934 psi | 89% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,281 psi | 88% | 2477 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,860 psi | 87% | 2592 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 44,846 psi | 87% | 2516 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 43,888 psi | 85% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 45,948 psi | 89% | 2579 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 84% | 45,542 psi | 88% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 43,976 psi | 85% | 2526 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 98% | 45,136 psi | 88% | 2556 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 88% | 46,064 psi | 89% | 2579 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 96% | 45,992 psi | 89% | 2635 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 46,325 psi | 90% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,991 psi | 87% | 2585 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,148 psi | 82% | 2707 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,658 psi | 89% | 2566 fps | 96% |
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>> | 88% | 33,330 psi | 65% | 2333 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 34,737 psi | 67% | 2375 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,229 psi | 66% | 2385 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,421 psi | 75% | 2503 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,511 psi | 85% | 2562 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,598 psi | 85% | 2608 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,614 psi | 52% | 2208 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,982 psi | 66% | 2418 fps | 95.8% |
| Alliant Reloder-26 | 43.3 gr | 86% | 32,343 psi | 63% | 2425 fps | 96.1% |
| Bofors RP15 | <<locked>> | 98% | 42,670 psi | 83% | 2589 fps | 95.2% |
| Bofors RP5 | <<locked>> | 96% | 43,598 psi | 85% | 2608 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 39,189 psi | 76% | 2395 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,840 psi | 72% | 2421 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 42,627 psi | 83% | 2497 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,821 psi | 62% | 2293 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 82% | 38,305 psi | 74% | 2484 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 52% | 1463 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 39,784 psi | 77% | 2431 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,756 psi | 79% | 2428 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 33,663 psi | 65% | 2339 fps | 97.2% |
| Lovex S065 | <<locked>> | 80% | 38,203 psi | 74% | 2382 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,405 psi | 71% | 2359 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 34,301 psi | 67% | 2356 fps | 95.5% |
| Norma MRP | 44 gr | 90% | 37,376 psi | 73% | 2510 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,809 psi | 68% | 2375 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 80% | 33,678 psi | 65% | 2359 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 40,292 psi | 78% | 2523 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 54% | 1503 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,857 psi | 79% | 2559 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,418 psi | 67% | 2395 fps | 97% |
| ReloadSwiss RS 70 | 39.9 gr | 80% | 33,663 psi | 65% | 2392 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 41,669 psi | 81% | 2470 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 42,496 psi | 83% | 2546 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,189 psi | 76% | 2395 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,203 psi | 74% | 2382 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 36,405 psi | 71% | 2359 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,598 psi | 83% | 2516 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,453 psi | 84% | 2392 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,405 psi | 73% | 2326 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,076 psi | 82% | 2539 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 42,163 psi | 82% | 2470 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,285 psi | 61% | 2336 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 40,350 psi | 78% | 2477 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 40,176 psi | 78% | 2405 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,129 psi | 70% | 2375 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 39,856 psi | 77% | 2457 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 35,578 psi | 69% | 2375 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 27,224 psi | 53% | 2231 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,520 psi | 69% | 2352 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 36,840 psi | 72% | 2421 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,121 psi | 49% | 2231 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,815 psi | 83% | 2516 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 52 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 140gr | Hornady A-MAX. Alliant Reloder-26 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,726 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 140gr | Hornady A-MAX 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.