Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 122gr | Lehigh Defense Controlled Chaos bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and Alliant Reloder-26.
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 2495 | <<locked>> | 82% | 46,050 psi | 89% | 2648 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,931 psi | 83% | 2687 fps | 96.4% |
| Accurate 4064 | <<locked>> | 84% | 46,296 psi | 90% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 45,556 psi | 88% | 2756 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 84% | 44,672 psi | 87% | 2664 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 45,353 psi | 88% | 2805 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 44,541 psi | 87% | 2687 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 44,831 psi | 87% | 2700 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,121 psi | 86% | 2759 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,411 psi | 86% | 2789 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,872 psi | 79% | 2717 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,919 psi | 89% | 2884 fps | 98.5% |
| Bofors RP3 | <<locked>> | 84% | 44,672 psi | 87% | 2697 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 45,382 psi | 88% | 2703 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 90% | 44,933 psi | 87% | 2746 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,845 psi | 85% | 2700 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 45,934 psi | 89% | 2749 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 70% | 1749 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 44,121 psi | 86% | 2648 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 46,253 psi | 90% | 2756 fps | 98.7% |
| IMR 4895 | <<locked>> | 82% | 45,919 psi | 89% | 2730 fps | 99.4% |
| Lovex S062 | <<locked>> | 82% | 44,179 psi | 86% | 2651 fps | 99.8% |
| Lovex S065 | <<locked>> | 90% | 46,296 psi | 90% | 2694 fps | 97.5% |
| Lovex S070 | <<locked>> | 90% | 44,251 psi | 86% | 2674 fps | 95.9% |
| Norma 203B | <<locked>> | 82% | 44,150 psi | 86% | 2687 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 45,078 psi | 88% | 2749 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 82% | 44,005 psi | 85% | 2707 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 43,772 psi | 85% | 2733 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 70% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,629 psi | 89% | 2684 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,150 psi | 86% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 45,020 psi | 87% | 2776 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,556 psi | 87% | 2785 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 45,890 psi | 89% | 2661 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 86% | 44,541 psi | 87% | 2690 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 46,296 psi | 90% | 2694 fps | 97.5% |
| Shooters World Precision | <<locked>> | 82% | 44,179 psi | 86% | 2651 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 44,251 psi | 86% | 2674 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 46,035 psi | 89% | 2749 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 44,121 psi | 86% | 2569 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,992 psi | 89% | 2641 fps | 96.1% |
| Somchem S355 | <<locked>> | 86% | 45,237 psi | 88% | 2690 fps | 99.5% |
| Somchem S365 | <<locked>> | 96% | 46,238 psi | 90% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 45,556 psi | 88% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 46,253 psi | 90% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 46,006 psi | 89% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,019 psi | 85% | 2694 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 44,498 psi | 86% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 46,383 psi | 90% | 2749 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,049 psi | 87% | 2795 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,903 psi | 85% | 2671 fps | 99.6% |
| Winchester 760 | <<locked>> | 90% | 45,252 psi | 88% | 2753 fps | 96% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,579 psi | 71% | 2723 fps | 99.1% |
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 2495 | <<locked>> | 80% | 43,149 psi | 84% | 2602 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 39,842 psi | 77% | 2628 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 40,828 psi | 79% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,301 psi | 67% | 2523 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,450 psi | 77% | 2559 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,308 psi | 82% | 2743 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,291 psi | 76% | 2582 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,105 psi | 82% | 2648 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,476 psi | 67% | 2536 fps | 95.6% |
| Alliant Reloder-17 | 39 gr | 80% | 33,910 psi | 66% | 2552 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,907 psi | 58% | 2441 fps | 95.3% |
| Alliant Reloder-26 | 47 gr | 94% | 37,130 psi | 72% | 2687 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 39,015 psi | 76% | 2589 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 39,755 psi | 77% | 2592 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 42,206 psi | 82% | 2694 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,863 psi | 58% | 2385 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,801 psi | 83% | 2690 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 51% | 1558 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,437 psi | 80% | 2595 fps | 98.4% |
| IMR 4831 | <<locked>> | 84% | 33,388 psi | 65% | 2484 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 43,163 psi | 84% | 2677 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 41,510 psi | 81% | 2598 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 38,580 psi | 75% | 2539 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 41,350 psi | 80% | 2615 fps | 95% |
| Norma 203B | <<locked>> | 80% | 41,495 psi | 81% | 2635 fps | 98.7% |
| Norma URP | <<locked>> | 84% | 34,621 psi | 67% | 2526 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,046 psi | 80% | 2648 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 41,176 psi | 80% | 2680 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 52% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,132 psi | 78% | 2572 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,071 psi | 70% | 2618 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,113 psi | 66% | 2539 fps | 95% |
| ReloadSwiss RS 70 | 42.6 gr | 86% | 36,593 psi | 71% | 2605 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 43,120 psi | 84% | 2612 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,724 psi | 71% | 2533 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,580 psi | 75% | 2539 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 41,510 psi | 81% | 2598 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 41,350 psi | 80% | 2615 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,608 psi | 73% | 2582 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,059 psi | 76% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,178 psi | 84% | 2592 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 37,536 psi | 73% | 2536 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 27,311 psi | 53% | 2369 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 43,018 psi | 84% | 2595 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,468 psi | 84% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,679 psi | 69% | 2474 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 33,852 psi | 66% | 2474 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 41,829 psi | 81% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,694 psi | 69% | 2530 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 32,300 psi | 63% | 2520 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,488 psi | 61% | 2398 fps | 96.5% |
| Winchester 760 | <<locked>> | 88% | 42,206 psi | 82% | 2694 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,066 psi | 58% | 2523 fps | 96% |
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 | 122gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,749 fps to 2,884 fps. Accurate 3100 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 122.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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. ReloadSwiss RS 70, Alliant Reloder-17, Alliant Reloder-26 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 122gr | Lehigh Defense Controlled Chaos 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.