Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 140gr | Nosler AccuBond bullet and 53 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 46,470 psi | 90% | 2589 fps | 98.6% |
| Accurate 4350 | <<locked>> | 88% | 45,513 psi | 88% | 2585 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 82% | 46,572 psi | 90% | 2533 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 43,903 psi | 85% | 2592 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 43,874 psi | 85% | 2608 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,238 psi | 90% | 2612 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,398 psi | 90% | 2661 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 43,874 psi | 85% | 2612 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,698 psi | 79% | 2575 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 45,963 psi | 89% | 2723 fps | 99.6% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,397 psi | 88% | 2641 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 46,398 psi | 90% | 2661 fps | 96.4% |
| Bofors RP7 | <<locked>> | 84% | 44,295 psi | 86% | 2493 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 86% | 44,686 psi | 87% | 2579 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 84% | 45,295 psi | 88% | 2546 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 43,947 psi | 85% | 2533 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 43,918 psi | 85% | 2598 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 70% | 1637 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,889 psi | 87% | 2526 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,934 psi | 89% | 2526 fps | 97.6% |
| IMR 4831 | <<locked>> | 90% | 46,456 psi | 90% | 2589 fps | 99.6% |
| Lovex S065 | <<locked>> | 86% | 45,774 psi | 89% | 2526 fps | 98.7% |
| Lovex S070 | <<locked>> | 86% | 43,642 psi | 85% | 2507 fps | 97.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,408 psi | 80% | 2500 fps | 97.6% |
| Norma MRP | <<locked>> | 96% | 45,687 psi | 89% | 2680 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 45,107 psi | 88% | 2579 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 43,584 psi | 85% | 2569 fps | 98.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,062 psi | 84% | 2579 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 71% | 1677 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 43,816 psi | 85% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 45,295 psi | 88% | 2608 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 44,193 psi | 86% | 2621 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 82% | 44,324 psi | 86% | 2516 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 45,295 psi | 88% | 2595 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 84% | 44,295 psi | 86% | 2493 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 45,774 psi | 89% | 2526 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,642 psi | 85% | 2507 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 45,281 psi | 88% | 2562 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 45,890 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% | 44,875 psi | 87% | 2589 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 44,817 psi | 87% | 2516 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 46,485 psi | 90% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 45,977 psi | 89% | 2579 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 84% | 45,498 psi | 88% | 2493 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 43,947 psi | 85% | 2526 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 98% | 45,150 psi | 88% | 2552 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 88% | 46,064 psi | 89% | 2579 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 96% | 45,963 psi | 89% | 2635 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 46,050 psi | 89% | 2546 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 45,005 psi | 87% | 2585 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,901 psi | 81% | 2703 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,716 psi | 89% | 2566 fps | 95.9% |
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>> | 88% | 33,083 psi | 64% | 2326 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 34,693 psi | 67% | 2375 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 80% | 43,845 psi | 85% | 2484 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,214 psi | 66% | 2385 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,421 psi | 75% | 2503 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,526 psi | 85% | 2559 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,308 psi | 84% | 2602 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,585 psi | 52% | 2205 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,997 psi | 66% | 2418 fps | 95.7% |
| Alliant Reloder-26 | 43.2 gr | 86% | 32,314 psi | 63% | 2421 fps | 96% |
| Bofors RP15 | <<locked>> | 98% | 42,714 psi | 83% | 2589 fps | 95.2% |
| Bofors RP5 | <<locked>> | 96% | 43,308 psi | 84% | 2602 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 39,189 psi | 76% | 2392 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,535 psi | 71% | 2415 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 42,308 psi | 82% | 2490 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,575 psi | 61% | 2283 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 82% | 38,305 psi | 74% | 2480 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 53% | 1463 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 39,479 psi | 77% | 2421 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,451 psi | 79% | 2421 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 33,388 psi | 65% | 2329 fps | 97% |
| Lovex S065 | <<locked>> | 80% | 37,913 psi | 74% | 2372 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 36,361 psi | 71% | 2359 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 34,055 psi | 66% | 2349 fps | 95.4% |
| Norma MRP | 43.9 gr | 90% | 37,376 psi | 73% | 2507 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,751 psi | 67% | 2372 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 82% | 35,752 psi | 69% | 2405 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 98% | 40,045 psi | 78% | 2516 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 53% | 1499 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,843 psi | 79% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,113 psi | 66% | 2385 fps | 96.9% |
| ReloadSwiss RS 70 | 39.8 gr | 80% | 33,649 psi | 65% | 2392 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 41,640 psi | 81% | 2467 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 42,192 psi | 82% | 2536 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 39,189 psi | 76% | 2392 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,913 psi | 74% | 2372 fps | 97% |
| Shooters World SW4350 | <<locked>> | 80% | 36,361 psi | 71% | 2359 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,554 psi | 83% | 2516 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,105 psi | 84% | 2382 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,115 psi | 72% | 2320 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,785 psi | 81% | 2533 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 41,814 psi | 81% | 2461 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,241 psi | 61% | 2333 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 40,335 psi | 78% | 2474 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 40,118 psi | 78% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,114 psi | 70% | 2372 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 42,119 psi | 82% | 2497 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 35,549 psi | 69% | 2372 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 28,805 psi | 56% | 2270 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,259 psi | 68% | 2346 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 36,782 psi | 71% | 2418 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,918 psi | 48% | 2221 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,569 psi | 83% | 2510 fps | 95% |
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 | Nosler AccuBond. Alliant Reloder-26 delivers the highest muzzle velocity at 2,723 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,723 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 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 | Nosler AccuBond 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.