Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 123gr | Fox Classic Hunter bullet and 55 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 ReloadSwiss RS 62.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 45,034 psi | 87% | 2631 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,395 psi | 82% | 2677 fps | 96.4% |
| Accurate 4064 | <<locked>> | 84% | 45,397 psi | 88% | 2677 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 44,817 psi | 87% | 2743 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 84% | 44,338 psi | 86% | 2654 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 44,991 psi | 87% | 2795 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 44,063 psi | 86% | 2677 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 44,353 psi | 86% | 2690 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,005 psi | 85% | 2756 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,280 psi | 86% | 2785 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,248 psi | 78% | 2703 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,498 psi | 88% | 2874 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 44,005 psi | 85% | 2684 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 44,831 psi | 87% | 2690 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 90% | 44,773 psi | 87% | 2743 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 46,311 psi | 90% | 2743 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 45,542 psi | 88% | 2740 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 69% | 1742 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,801 psi | 85% | 2638 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,427 psi | 90% | 2664 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,398 psi | 90% | 2690 fps | 96.2% |
| IMR 4831 | <<locked>> | 94% | 46,006 psi | 89% | 2746 fps | 98.8% |
| IMR 4895 | <<locked>> | 82% | 45,498 psi | 88% | 2720 fps | 99.4% |
| Lovex S062 | <<locked>> | 84% | 46,470 psi | 90% | 2690 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 46,050 psi | 89% | 2690 fps | 97.6% |
| Lovex S070 | <<locked>> | 92% | 46,427 psi | 90% | 2713 fps | 96.6% |
| Norma 203B | <<locked>> | 82% | 43,685 psi | 85% | 2677 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 44,556 psi | 87% | 2736 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 82% | 43,584 psi | 85% | 2694 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 43,511 psi | 85% | 2726 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,882 psi | 70% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,136 psi | 88% | 2674 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,005 psi | 85% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 44,759 psi | 87% | 2766 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,338 psi | 86% | 2779 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 82% | 45,324 psi | 88% | 2651 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 86% | 44,222 psi | 86% | 2684 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 46,050 psi | 89% | 2690 fps | 97.6% |
| Shooters World Precision | <<locked>> | 84% | 46,470 psi | 90% | 2690 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 46,427 psi | 90% | 2713 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 45,585 psi | 89% | 2740 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,758 psi | 85% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,745 psi | 89% | 2638 fps | 96.2% |
| Somchem S355 | <<locked>> | 86% | 44,686 psi | 87% | 2680 fps | 99.5% |
| Somchem S365 | <<locked>> | 96% | 45,629 psi | 89% | 2795 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 45,136 psi | 88% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 45,861 psi | 89% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 45,818 psi | 89% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 43,859 psi | 85% | 2687 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 44,309 psi | 86% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 46,079 psi | 89% | 2743 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,353 psi | 86% | 2779 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,671 psi | 85% | 2667 fps | 99.6% |
| Winchester 760 | <<locked>> | 90% | 44,773 psi | 87% | 2743 fps | 96% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,071 psi | 70% | 2710 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% | 42,163 psi | 82% | 2585 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 39,305 psi | 76% | 2615 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 39,943 psi | 78% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,852 psi | 66% | 2513 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,131 psi | 76% | 2552 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,930 psi | 81% | 2733 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,841 psi | 75% | 2572 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,669 psi | 81% | 2638 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,026 psi | 66% | 2526 fps | 95.7% |
| Alliant Reloder-17 | 39.4 gr | 80% | 33,388 psi | 65% | 2539 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,472 psi | 57% | 2428 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,622 psi | 71% | 2674 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 38,348 psi | 74% | 2572 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 39,189 psi | 76% | 2579 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 41,713 psi | 81% | 2680 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,327 psi | 57% | 2372 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,409 psi | 82% | 2680 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 51% | 1558 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,104 psi | 80% | 2585 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,352 psi | 84% | 2605 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,656 psi | 85% | 2638 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 32,793 psi | 64% | 2470 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 42,714 psi | 83% | 2667 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 40,973 psi | 80% | 2589 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 38,014 psi | 74% | 2530 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 41,031 psi | 80% | 2608 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 41,017 psi | 80% | 2625 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 34,113 psi | 66% | 2513 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,640 psi | 79% | 2638 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 40,654 psi | 79% | 2667 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 52% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,668 psi | 77% | 2562 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,607 psi | 69% | 2605 fps | 99.7% |
| ReloadSwiss RS 62 | 42.3 gr | 86% | 36,013 psi | 70% | 2585 fps | 95.9% |
| ReloadSwiss RS 70 | 43 gr | 86% | 36,042 psi | 70% | 2592 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 42,554 psi | 83% | 2602 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,100 psi | 70% | 2520 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,014 psi | 74% | 2530 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 40,973 psi | 80% | 2589 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 41,031 psi | 80% | 2608 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,173 psi | 72% | 2569 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,435 psi | 75% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,627 psi | 83% | 2579 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 36,956 psi | 72% | 2526 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 26,716 psi | 52% | 2352 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 42,250 psi | 82% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,062 psi | 84% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,157 psi | 68% | 2464 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 33,359 psi | 65% | 2464 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 41,350 psi | 80% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,114 psi | 68% | 2516 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 31,604 psi | 61% | 2500 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,980 psi | 60% | 2382 fps | 96.5% |
| Winchester 760 | <<locked>> | 88% | 42,018 psi | 82% | 2687 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,544 psi | 57% | 2507 fps | 95.9% |
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 55 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 123gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,874 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,874 fps. Accurate 3100 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:8.5 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, ReloadSwiss RS 62 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 123gr | Fox Classic Hunter 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.