Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 120gr | SUS-TAC HPT bullet and 50 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 45,847 psi | 89% | 2671 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,685 psi | 83% | 2703 fps | 96.2% |
| Accurate 4064 | <<locked>> | 84% | 46,354 psi | 90% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 45,440 psi | 88% | 2779 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 84% | 44,744 psi | 87% | 2687 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 45,339 psi | 88% | 2828 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 44,599 psi | 87% | 2713 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 44,889 psi | 87% | 2723 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,077 psi | 86% | 2782 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,338 psi | 86% | 2808 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,698 psi | 79% | 2736 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,861 psi | 89% | 2907 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 44,353 psi | 86% | 2717 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 84% | 45,397 psi | 88% | 2726 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,729 psi | 85% | 2723 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 45,934 psi | 89% | 2772 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 69% | 1762 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,932 psi | 85% | 2664 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,499 psi | 90% | 2690 fps | 96% |
| IMR 4831 | <<locked>> | 94% | 46,151 psi | 90% | 2776 fps | 98.6% |
| IMR 4895 | <<locked>> | 82% | 46,021 psi | 89% | 2756 fps | 99.4% |
| Lovex S062 | <<locked>> | 82% | 43,976 psi | 85% | 2671 fps | 99.7% |
| Lovex S065 | <<locked>> | 90% | 46,267 psi | 90% | 2717 fps | 97.4% |
| Norma 203B | <<locked>> | 82% | 44,208 psi | 86% | 2713 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 44,976 psi | 87% | 2769 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 82% | 43,990 psi | 85% | 2730 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 43,932 psi | 85% | 2759 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 70% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,629 psi | 89% | 2707 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,063 psi | 86% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 44,860 psi | 87% | 2792 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,657 psi | 87% | 2812 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 82% | 46,021 psi | 89% | 2687 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 86% | 44,570 psi | 87% | 2713 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 46,267 psi | 90% | 2717 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 43,976 psi | 85% | 2671 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 45,977 psi | 89% | 2769 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 44,222 psi | 86% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,919 psi | 89% | 2664 fps | 95.9% |
| Somchem S355 | <<locked>> | 86% | 45,252 psi | 88% | 2717 fps | 99.5% |
| Somchem S365 | <<locked>> | 96% | 46,035 psi | 89% | 2831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 45,701 psi | 89% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 46,340 psi | 90% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 45,948 psi | 89% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 43,947 psi | 85% | 2713 fps | 98% |
| Vihtavuori N540 | <<locked>> | 82% | 44,541 psi | 87% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 46,238 psi | 90% | 2772 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,831 psi | 87% | 2812 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 44,019 psi | 85% | 2697 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,608 psi | 71% | 2743 fps | 99% |
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% | 43,018 psi | 84% | 2621 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 39,958 psi | 78% | 2651 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 40,640 psi | 79% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,360 psi | 67% | 2546 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,320 psi | 76% | 2579 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,322 psi | 82% | 2766 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,131 psi | 76% | 2602 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,901 psi | 81% | 2667 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,505 psi | 67% | 2559 fps | 95.5% |
| Alliant Reloder-17 | 39.5 gr | 80% | 33,924 psi | 66% | 2572 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,878 psi | 58% | 2457 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,912 psi | 72% | 2703 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 38,812 psi | 75% | 2605 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,566 psi | 77% | 2608 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,704 psi | 58% | 2402 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,830 psi | 83% | 2713 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 52% | 1578 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,278 psi | 80% | 2612 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,816 psi | 85% | 2635 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 33,431 psi | 65% | 2507 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,960 psi | 83% | 2697 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 41,350 psi | 80% | 2618 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,609 psi | 75% | 2562 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 41,292 psi | 80% | 2654 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 34,679 psi | 67% | 2549 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 41,089 psi | 80% | 2671 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 41,060 psi | 80% | 2700 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,861 psi | 52% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,685 psi | 83% | 2651 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,114 psi | 70% | 2641 fps | 99.6% |
| ReloadSwiss RS 62 | 42.4 gr | 86% | 36,564 psi | 71% | 2618 fps | 95.8% |
| ReloadSwiss RS 70 | 44.1 gr | 88% | 39,030 psi | 76% | 2687 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 43,250 psi | 84% | 2638 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,593 psi | 71% | 2552 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,609 psi | 75% | 2562 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 41,350 psi | 80% | 2618 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,652 psi | 73% | 2602 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,957 psi | 76% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,149 psi | 84% | 2612 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 37,376 psi | 73% | 2559 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 27,209 psi | 53% | 2385 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 42,873 psi | 83% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,279 psi | 84% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,520 psi | 69% | 2493 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 36,143 psi | 70% | 2552 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 41,655 psi | 81% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,679 psi | 69% | 2552 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 32,256 psi | 63% | 2539 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,488 psi | 61% | 2418 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,153 psi | 59% | 2543 fps | 95.8% |
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 | 120gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,907 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,907 fps. Accurate 3100 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 69–90 %, leaving at least 10 % headroom. The 120.0 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 | 120gr | SUS-TAC HPT 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.