Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 120gr | Nosler Expansion Tip 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 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% | 44,788 psi | 87% | 2664 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,047 psi | 82% | 2700 fps | 96.1% |
| Accurate 4064 | <<locked>> | 84% | 45,107 psi | 88% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 44,614 psi | 87% | 2772 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 84% | 44,106 psi | 86% | 2687 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 44,614 psi | 87% | 2825 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 46,572 psi | 90% | 2759 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 44,092 psi | 86% | 2720 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 46,398 psi | 90% | 2838 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 43,758 psi | 85% | 2808 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,016 psi | 78% | 2730 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,976 psi | 87% | 2897 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 43,642 psi | 85% | 2713 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 84% | 44,469 psi | 86% | 2720 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 46,093 psi | 90% | 2772 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 45,165 psi | 88% | 2766 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 69% | 1768 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 46,354 psi | 90% | 2720 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,166 psi | 90% | 2690 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,354 psi | 90% | 2723 fps | 96% |
| IMR 4831 | <<locked>> | 94% | 45,469 psi | 88% | 2772 fps | 98.6% |
| IMR 4895 | <<locked>> | 82% | 45,208 psi | 88% | 2749 fps | 99.3% |
| Lovex S062 | <<locked>> | 84% | 46,209 psi | 90% | 2720 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 45,658 psi | 89% | 2717 fps | 97.3% |
| Lovex S070 | <<locked>> | 92% | 46,296 psi | 90% | 2746 fps | 96.4% |
| Norma 203B | <<locked>> | 84% | 46,499 psi | 90% | 2766 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 44,396 psi | 86% | 2769 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 82% | 43,192 psi | 84% | 2723 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 94% | 46,369 psi | 90% | 2815 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,810 psi | 70% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,107 psi | 88% | 2707 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 43,569 psi | 85% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 44,483 psi | 86% | 2795 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,048 psi | 86% | 2808 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 82% | 45,121 psi | 88% | 2684 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 86% | 43,859 psi | 85% | 2710 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 45,658 psi | 89% | 2717 fps | 97.3% |
| Shooters World Precision | <<locked>> | 84% | 46,209 psi | 90% | 2720 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 46,296 psi | 90% | 2746 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 45,179 psi | 88% | 2766 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 46,383 psi | 90% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,310 psi | 88% | 2664 fps | 95.9% |
| Somchem S355 | <<locked>> | 86% | 44,367 psi | 86% | 2710 fps | 99.4% |
| Somchem S365 | <<locked>> | 96% | 45,382 psi | 88% | 2828 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 44,918 psi | 87% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 45,614 psi | 89% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 45,411 psi | 88% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 46,586 psi | 90% | 2772 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 44,019 psi | 85% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 45,556 psi | 88% | 2769 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,048 psi | 86% | 2805 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 46,470 psi | 90% | 2749 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,766 psi | 69% | 2730 fps | 98.8% |
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% | 41,640 psi | 81% | 2612 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 39,030 psi | 76% | 2641 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 39,421 psi | 77% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,547 psi | 65% | 2536 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 38,696 psi | 75% | 2575 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,597 psi | 81% | 2762 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,334 psi | 74% | 2595 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,452 psi | 81% | 2664 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,823 psi | 66% | 2552 fps | 95.3% |
| Alliant Reloder-17 | 39.9 gr | 80% | 33,141 psi | 64% | 2562 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,053 psi | 60% | 2503 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,332 psi | 71% | 2697 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 38,101 psi | 74% | 2602 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 80% | 38,957 psi | 76% | 2605 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,964 psi | 56% | 2392 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,105 psi | 82% | 2710 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 51% | 1578 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,640 psi | 79% | 2612 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,178 psi | 84% | 2635 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,395 psi | 84% | 2664 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 34,708 psi | 67% | 2546 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 42,467 psi | 82% | 2697 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 40,538 psi | 79% | 2615 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,768 psi | 73% | 2552 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 43,265 psi | 84% | 2687 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 40,785 psi | 79% | 2654 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 33,852 psi | 66% | 2539 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,306 psi | 78% | 2664 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 40,466 psi | 79% | 2697 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 52% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,163 psi | 82% | 2648 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,331 psi | 69% | 2631 fps | 99.5% |
| ReloadSwiss RS 62 | 42.9 gr | 86% | 35,882 psi | 70% | 2615 fps | 95.6% |
| ReloadSwiss RS 70 | 44.6 gr | 88% | 38,435 psi | 75% | 2684 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 42,409 psi | 82% | 2631 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,621 psi | 69% | 2539 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,768 psi | 73% | 2552 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 40,538 psi | 79% | 2615 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 43,265 psi | 84% | 2687 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,927 psi | 72% | 2595 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,319 psi | 74% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,250 psi | 82% | 2605 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 36,535 psi | 71% | 2549 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 26,339 psi | 51% | 2365 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 42,090 psi | 82% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,540 psi | 83% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,693 psi | 67% | 2484 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 35,578 psi | 69% | 2546 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 41,133 psi | 80% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,795 psi | 68% | 2539 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 31,473 psi | 61% | 2526 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,734 psi | 60% | 2405 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,356 psi | 57% | 2526 fps | 95.4% |
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 | 120gr | Nosler Expansion Tip. Alliant Reloder-26 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,768 fps to 2,897 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 69–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.264" calls for a 1:9.0 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, ReloadSwiss RS 62 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 120gr | Nosler Expansion Tip 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.