Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 140gr | Speer Deep Curl Soft Point bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Winchester StaBALL HD.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 45,585 psi | 89% | 2585 fps | 98.7% |
| Accurate 4350 | <<locked>> | 86% | 44,730 psi | 87% | 2582 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 45,716 psi | 89% | 2615 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 45,948 psi | 89% | 2615 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 45,803 psi | 89% | 2638 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 46,166 psi | 90% | 2657 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,397 psi | 88% | 2608 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,440 psi | 88% | 2654 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 46,180 psi | 90% | 2661 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,801 psi | 83% | 2631 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 45,223 psi | 88% | 2720 fps | 99.7% |
| Bofors RP15 | <<locked>> | 98% | 44,802 psi | 87% | 2641 fps | 96.2% |
| Bofors RP5 | <<locked>> | 96% | 45,440 psi | 88% | 2654 fps | 96.5% |
| Bofors RP7 | <<locked>> | 84% | 45,861 psi | 89% | 2536 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 84% | 43,918 psi | 85% | 2575 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 82% | 44,208 psi | 86% | 2539 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 46,021 psi | 89% | 2579 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 46,006 psi | 89% | 2648 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 71% | 1660 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 43,729 psi | 85% | 2520 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,541 psi | 87% | 2513 fps | 97.5% |
| IMR 4831 | <<locked>> | 88% | 45,600 psi | 89% | 2585 fps | 99.7% |
| Lovex S065 | <<locked>> | 84% | 44,730 psi | 87% | 2520 fps | 98.7% |
| Lovex S070 | <<locked>> | 86% | 45,527 psi | 88% | 2552 fps | 98% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,424 psi | 84% | 2546 fps | 98.3% |
| Norma 204 | <<locked>> | 88% | 46,485 psi | 90% | 2605 fps | 96.3% |
| Norma MRP | <<locked>> | 94% | 45,063 psi | 88% | 2680 fps | 97.8% |
| Norma URP | <<locked>> | 86% | 44,092 psi | 86% | 2572 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 45,687 psi | 89% | 2615 fps | 98.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,411 psi | 88% | 2638 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 72% | 1699 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 45,861 psi | 89% | 2654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 44,454 psi | 86% | 2602 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 46,093 psi | 90% | 2671 fps | 99.5% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,727 psi | 81% | 2648 fps | 97% |
| Rottweil R 903 | <<locked>> | 82% | 46,267 psi | 90% | 2559 fps | 100% |
| Rottweil R 905 | <<locked>> | 92% | 44,280 psi | 86% | 2589 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 84% | 45,861 psi | 89% | 2536 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 44,730 psi | 87% | 2520 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 86% | 45,527 psi | 88% | 2552 fps | 98% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 44,034 psi | 86% | 2470 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,859 psi | 85% | 2585 fps | 96.1% |
| Somchem S365 | <<locked>> | 90% | 46,035 psi | 89% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 45,179 psi | 88% | 2579 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 82% | 44,483 psi | 86% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 45,948 psi | 89% | 2572 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 96% | 44,222 psi | 86% | 2549 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 86% | 45,165 psi | 88% | 2572 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 94% | 45,440 psi | 88% | 2635 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 45,165 psi | 88% | 2543 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 43,918 psi | 85% | 2575 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,411 psi | 86% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,628 psi | 87% | 2562 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>> | 86% | 32,677 psi | 63% | 2326 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 36,260 psi | 70% | 2418 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 43,076 psi | 84% | 2562 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,047 psi | 84% | 2562 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,549 psi | 69% | 2428 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,321 psi | 78% | 2552 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,554 psi | 83% | 2556 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,801 psi | 83% | 2605 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,078 psi | 51% | 2198 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,272 psi | 65% | 2411 fps | 95.8% |
| Alliant Reloder-26 | 44 gr | 84% | 31,807 psi | 62% | 2418 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 41,945 psi | 81% | 2585 fps | 95.3% |
| Bofors RP5 | <<locked>> | 94% | 42,801 psi | 83% | 2605 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 40,524 psi | 79% | 2434 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 38,406 psi | 75% | 2464 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 41,408 psi | 80% | 2484 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,170 psi | 64% | 2333 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 80% | 37,260 psi | 72% | 2470 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 53% | 1480 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 38,667 psi | 75% | 2418 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,018 psi | 82% | 2464 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 35,056 psi | 68% | 2379 fps | 97.8% |
| Lovex S065 | <<locked>> | 80% | 39,552 psi | 77% | 2418 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 37,681 psi | 73% | 2398 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 33,852 psi | 66% | 2352 fps | 95.6% |
| Norma 204 | <<locked>> | 86% | 43,482 psi | 84% | 2552 fps | 95.5% |
| Norma MRP | 44.7 gr | 88% | 36,622 psi | 71% | 2503 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 36,187 psi | 70% | 2415 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 80% | 35,056 psi | 68% | 2402 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 39,189 psi | 76% | 2516 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 54% | 1519 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,830 psi | 83% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,998 psi | 70% | 2434 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,157 psi | 68% | 2441 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,827 psi | 75% | 2582 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 43,250 psi | 84% | 2507 fps | 100% |
| Rottweil R 905 | <<locked>> | 90% | 41,655 psi | 81% | 2539 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 40,524 psi | 79% | 2434 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,552 psi | 77% | 2418 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 80% | 37,681 psi | 73% | 2398 fps | 96% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,595 psi | 75% | 2365 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,263 psi | 80% | 2533 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 32,648 psi | 63% | 2375 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,581 psi | 77% | 2470 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 41,597 psi | 81% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,492 psi | 73% | 2411 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 38,928 psi | 76% | 2451 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 37,130 psi | 72% | 2418 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 28,572 psi | 55% | 2270 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,738 psi | 71% | 2388 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 38,406 psi | 75% | 2464 fps | 96% |
| Winchester StaBALL HD | 41.2 gr | 82% | 24,482 psi | 48% | 2218 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,669 psi | 81% | 2507 fps | 95.1% |
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 53 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 140gr | Speer Deep Curl Soft Point. Winchester StaBALL HD delivers the highest muzzle velocity at 2,762 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,762 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 53 of the 53 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 140.0 gr projectile in 0.264" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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. Norma MRP, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 140gr | Speer Deep Curl Soft Point 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.