Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 130gr | Sierra Tipped MatchKing 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 43,453 psi | 84% | 2625 fps | 97.4% |
| Accurate 4350 | <<locked>> | 90% | 46,021 psi | 89% | 2694 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 44,643 psi | 87% | 2592 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 44,744 psi | 87% | 2615 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 44,599 psi | 87% | 2697 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 44,730 psi | 87% | 2720 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,121 psi | 86% | 2710 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,624 psi | 75% | 2612 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 46,296 psi | 90% | 2822 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 44,672 psi | 87% | 2621 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 44,962 psi | 87% | 2595 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 45,208 psi | 88% | 2628 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 88% | 45,281 psi | 88% | 2680 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 44,222 psi | 86% | 2635 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 44,643 psi | 87% | 2697 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 70% | 1703 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 45,353 psi | 88% | 2625 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,976 psi | 85% | 2575 fps | 96.3% |
| IMR 4831 | <<locked>> | 90% | 43,845 psi | 85% | 2638 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 46,383 psi | 90% | 2625 fps | 98.2% |
| Lovex S070 | <<locked>> | 88% | 44,396 psi | 86% | 2608 fps | 96.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,682 psi | 75% | 2536 fps | 96.1% |
| Norma MRP | <<locked>> | 98% | 46,253 psi | 90% | 2779 fps | 97% |
| Norma URP | <<locked>> | 90% | 45,411 psi | 88% | 2680 fps | 99% |
| Ramshot Hunter | <<locked>> | 90% | 44,353 psi | 86% | 2674 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 71% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,658 psi | 89% | 2615 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 44,440 psi | 86% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 45,629 psi | 89% | 2710 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 44,686 psi | 87% | 2723 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 84% | 44,846 psi | 87% | 2618 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 44,962 psi | 87% | 2595 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 46,383 psi | 90% | 2625 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 88% | 44,396 psi | 86% | 2608 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 46,006 psi | 89% | 2671 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 44,019 psi | 85% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,919 psi | 89% | 2575 fps | 96.9% |
| Somchem S355 | <<locked>> | 84% | 45,426 psi | 88% | 2621 fps | 99.8% |
| Somchem S365 | <<locked>> | 92% | 43,859 psi | 85% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 46,354 psi | 90% | 2674 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 86% | 46,108 psi | 90% | 2598 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 44,309 psi | 86% | 2625 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 88% | 43,627 psi | 85% | 2628 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 98% | 45,788 psi | 89% | 2730 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 43,932 psi | 85% | 2602 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 45,571 psi | 89% | 2687 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,465 psi | 77% | 2736 fps | 100% |
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>> | 94% | 38,145 psi | 74% | 2523 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 32,663 psi | 63% | 2415 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,742 psi | 81% | 2536 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,785 psi | 81% | 2559 fps | 99.7% |
| Alliant Reloder-16 | 36.8 gr | 80% | 32,590 psi | 63% | 2425 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,390 psi | 71% | 2546 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,456 psi | 55% | 2339 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,376 psi | 71% | 2556 fps | 95.6% |
| Alliant Reloder-26 | 45.7 gr | 90% | 35,027 psi | 68% | 2572 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 41,930 psi | 81% | 2572 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,337 psi | 82% | 2543 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 42,511 psi | 83% | 2575 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 39,740 psi | 77% | 2572 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 58% | 2326 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 86% | 41,756 psi | 81% | 2638 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 52% | 1519 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,728 psi | 83% | 2575 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,147 psi | 80% | 2523 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 31,531 psi | 61% | 2372 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 36,201 psi | 70% | 2421 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 39,117 psi | 76% | 2503 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 36,260 psi | 70% | 2484 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 40,292 psi | 78% | 2657 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,648 psi | 63% | 2408 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 84% | 36,274 psi | 70% | 2503 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 53% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,743 psi | 83% | 2559 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,682 psi | 75% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,314 psi | 63% | 2428 fps | 95.3% |
| ReloadSwiss RS 70 | 41.2 gr | 82% | 34,156 psi | 66% | 2484 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 39,276 psi | 76% | 2513 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,337 psi | 82% | 2543 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,201 psi | 70% | 2421 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 39,117 psi | 76% | 2503 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,393 psi | 78% | 2566 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,336 psi | 80% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,364 psi | 78% | 2470 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 39,914 psi | 78% | 2516 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 29,298 psi | 57% | 2365 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 43,279 psi | 84% | 2618 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 37,971 psi | 74% | 2451 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,200 psi | 66% | 2418 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 80% | 33,678 psi | 65% | 2418 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 30,937 psi | 60% | 2415 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,562 psi | 65% | 2388 fps | 98.2% |
| Winchester 760 | <<locked>> | 84% | 39,740 psi | 77% | 2572 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,832 psi | 52% | 2359 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 47 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 130gr | Sierra Tipped MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,703 fps to 2,822 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 70–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.264" calls for a 1:9.0 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 | Sierra Tipped MatchKing 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.