Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 140gr | Nosler Ballistic Tip Hunting bullet and 50 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>> | 96% | 43,729 psi | 85% | 2543 fps | 98.2% |
| Accurate 4350 | <<locked>> | 88% | 45,774 psi | 89% | 2592 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 44,092 psi | 86% | 2595 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 44,411 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,412 psi | 90% | 2615 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 44,077 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,162 psi | 80% | 2585 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 46,122 psi | 90% | 2726 fps | 99.7% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,571 psi | 89% | 2644 fps | 96.1% |
| Bofors RP7 | <<locked>> | 84% | 44,483 psi | 86% | 2500 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 86% | 44,904 psi | 87% | 2582 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 84% | 45,527 psi | 88% | 2552 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 44,193 psi | 86% | 2539 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,106 psi | 86% | 2602 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 70% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 45,107 psi | 88% | 2533 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 84% | 46,151 psi | 90% | 2530 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 43,584 psi | 85% | 2539 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 46,006 psi | 89% | 2530 fps | 98.8% |
| Lovex S070 | <<locked>> | 86% | 43,874 psi | 85% | 2513 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,582 psi | 81% | 2507 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 45,861 psi | 89% | 2684 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 45,353 psi | 88% | 2585 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 43,787 psi | 85% | 2572 fps | 98.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,207 psi | 84% | 2582 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 71% | 1680 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 44,063 psi | 86% | 2615 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 45,542 psi | 88% | 2612 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 44,353 psi | 86% | 2628 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 82% | 44,628 psi | 87% | 2520 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 45,527 psi | 88% | 2602 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 84% | 44,483 psi | 86% | 2500 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 46,006 psi | 89% | 2530 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 86% | 43,874 psi | 85% | 2513 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 45,484 psi | 88% | 2566 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 46,166 psi | 90% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,208 psi | 88% | 2477 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,092 psi | 88% | 2595 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 44,759 psi | 87% | 2516 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 43,787 psi | 85% | 2589 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 46,180 psi | 90% | 2585 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 84% | 45,774 psi | 89% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 44,193 psi | 86% | 2533 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 98% | 45,324 psi | 88% | 2559 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 88% | 46,282 psi | 90% | 2585 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 96% | 46,209 psi | 90% | 2641 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 46,238 psi | 90% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 45,266 psi | 88% | 2589 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,380 psi | 82% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,876 psi | 89% | 2572 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% | 33,286 psi | 65% | 2333 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 34,708 psi | 67% | 2375 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,418 psi | 67% | 2392 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,609 psi | 75% | 2507 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,700 psi | 85% | 2566 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,600 psi | 52% | 2208 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,127 psi | 66% | 2421 fps | 95.8% |
| Alliant Reloder-26 | 42.4 gr | 84% | 30,356 psi | 59% | 2365 fps | 95% |
| Bofors RP15 | <<locked>> | 98% | 42,888 psi | 83% | 2595 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 39,407 psi | 77% | 2398 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 36,767 psi | 71% | 2421 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 42,554 psi | 83% | 2497 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,778 psi | 62% | 2290 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 82% | 38,479 psi | 75% | 2487 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 53% | 1470 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 39,711 psi | 77% | 2428 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,698 psi | 79% | 2428 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 33,605 psi | 65% | 2336 fps | 97.1% |
| Lovex S065 | <<locked>> | 80% | 38,130 psi | 74% | 2379 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,332 psi | 71% | 2359 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 34,258 psi | 67% | 2356 fps | 95.5% |
| Norma MRP | 44.1 gr | 90% | 37,550 psi | 73% | 2513 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,737 psi | 67% | 2375 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 80% | 33,823 psi | 66% | 2362 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 40,205 psi | 78% | 2523 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 53% | 1503 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,060 psi | 80% | 2562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,345 psi | 67% | 2392 fps | 97% |
| ReloadSwiss RS 70 | 40 gr | 80% | 33,837 psi | 66% | 2398 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 41,611 psi | 81% | 2467 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 42,395 psi | 82% | 2543 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,407 psi | 77% | 2398 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,130 psi | 74% | 2379 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 36,332 psi | 71% | 2359 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,815 psi | 83% | 2520 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,381 psi | 84% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,333 psi | 73% | 2326 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,989 psi | 82% | 2539 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 42,090 psi | 82% | 2467 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,227 psi | 61% | 2333 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 40,538 psi | 79% | 2480 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 40,103 psi | 78% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,056 psi | 70% | 2372 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 39,755 psi | 77% | 2454 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 35,752 psi | 69% | 2379 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 27,166 psi | 53% | 2228 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,447 psi | 69% | 2349 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 37,028 psi | 72% | 2425 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,063 psi | 49% | 2228 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,714 psi | 83% | 2513 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 50 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 140gr | Nosler Ballistic Tip Hunting. 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 50 of the 50 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 1:9.5 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 Ballistic Tip Hunting 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.