Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 120gr | Peregrine Glider GRM bullet and 56 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and ReloadSwiss RS 70.
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>> | 84% | 46,586 psi | 90% | 2690 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 43,947 psi | 85% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 43,265 psi | 84% | 2746 fps | 98% |
| ADI AR 2208 | <<locked>> | 86% | 45,919 psi | 89% | 2713 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,990 psi | 85% | 2805 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 45,876 psi | 89% | 2740 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 84% | 46,180 psi | 90% | 2753 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 94% | 45,542 psi | 88% | 2815 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 45,745 psi | 89% | 2841 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,030 psi | 76% | 2703 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,034 psi | 86% | 2871 fps | 98% |
| Bofors RP3 | <<locked>> | 86% | 45,847 psi | 89% | 2749 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 43,540 psi | 85% | 2694 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 92% | 46,267 psi | 90% | 2799 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 44,846 psi | 87% | 2749 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 44,440 psi | 86% | 2749 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,317 psi | 69% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 46,311 psi | 90% | 2726 fps | 99.6% |
| IMR 4064 | <<locked>> | 84% | 45,324 psi | 88% | 2697 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 44,570 psi | 87% | 2753 fps | 98.3% |
| IMR 4895 | <<locked>> | 82% | 44,469 psi | 86% | 2733 fps | 99.1% |
| Lovex S062 | <<locked>> | 84% | 45,165 psi | 88% | 2697 fps | 99.8% |
| Lovex S065 | <<locked>> | 90% | 44,788 psi | 87% | 2694 fps | 97% |
| Lovex S070 | <<locked>> | 92% | 45,426 psi | 88% | 2726 fps | 96% |
| Norma 201 | <<locked>> | 82% | 46,557 psi | 90% | 2710 fps | 99.9% |
| Norma 203B | <<locked>> | 84% | 45,498 psi | 88% | 2743 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 46,369 psi | 90% | 2799 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 84% | 45,339 psi | 88% | 2756 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 94% | 45,310 psi | 88% | 2789 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 69% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,222 psi | 86% | 2684 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 45,963 psi | 89% | 2808 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 45,803 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 46,557 psi | 90% | 2828 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 46,195 psi | 90% | 2844 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 44,353 psi | 86% | 2664 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 88% | 45,701 psi | 89% | 2740 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,788 psi | 87% | 2694 fps | 97% |
| Shooters World Precision | <<locked>> | 84% | 45,165 psi | 88% | 2697 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 92% | 45,426 psi | 88% | 2726 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 44,237 psi | 86% | 2743 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 46,340 psi | 90% | 2733 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 45,353 psi | 88% | 2618 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 46,514 psi | 90% | 2743 fps | 99.6% |
| Somchem S365 | <<locked>> | 96% | 44,179 psi | 86% | 2802 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 44,048 psi | 86% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 44,556 psi | 87% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 44,483 psi | 86% | 2674 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 45,353 psi | 88% | 2743 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 45,832 psi | 89% | 2690 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 44,759 psi | 87% | 2749 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,801 psi | 83% | 2779 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 45,513 psi | 88% | 2726 fps | 99.7% |
| Winchester 760 | <<locked>> | 92% | 46,586 psi | 90% | 2802 fps | 96.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,969 psi | 68% | 2700 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 45,803 psi | 89% | 2736 fps | 99.6% |
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% | 40,799 psi | 79% | 2592 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,624 psi | 75% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,940 psi | 68% | 2569 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 38,014 psi | 74% | 2552 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,973 psi | 80% | 2740 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,623 psi | 73% | 2575 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,437 psi | 79% | 2638 fps | 97.9% |
| Alliant Reloder-16 | 39.1 gr | 86% | 35,404 psi | 69% | 2589 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,605 psi | 63% | 2543 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,400 psi | 59% | 2480 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,811 psi | 73% | 2730 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 37,086 psi | 72% | 2575 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 80% | 38,000 psi | 74% | 2579 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 43,381 psi | 84% | 2743 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,284 psi | 59% | 2425 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,379 psi | 80% | 2690 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 51% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,468 psi | 84% | 2674 fps | 99.2% |
| IMR 4064 | <<locked>> | 80% | 39,914 psi | 78% | 2592 fps | 97.9% |
| IMR 4831 | <<locked>> | 86% | 34,069 psi | 66% | 2530 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,437 psi | 80% | 2671 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 39,798 psi | 77% | 2592 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 39,552 psi | 77% | 2589 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 42,366 psi | 82% | 2664 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,729 psi | 85% | 2657 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 39,784 psi | 77% | 2628 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 35,476 psi | 69% | 2575 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,639 psi | 77% | 2648 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 39,740 psi | 77% | 2674 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,527 psi | 52% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,278 psi | 80% | 2625 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,670 psi | 83% | 2746 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,737 psi | 67% | 2612 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,780 psi | 68% | 2585 fps | 95.1% |
| ReloadSwiss RS 70 | 43.7 gr | 88% | 37,478 psi | 73% | 2654 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 41,626 psi | 81% | 2612 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,882 psi | 68% | 2520 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,552 psi | 77% | 2589 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 39,798 psi | 77% | 2592 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 42,366 psi | 82% | 2664 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,013 psi | 70% | 2572 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,265 psi | 84% | 2677 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,623 psi | 73% | 2480 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,795 psi | 70% | 2526 fps | 97.7% |
| Somchem S365 | 38.1 gr | 82% | 27,731 psi | 54% | 2408 fps | 96% |
| Vihtavuori N135 | <<locked>> | 80% | 41,220 psi | 80% | 2595 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,814 psi | 81% | 2602 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,055 psi | 66% | 2464 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,722 psi | 67% | 2523 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 40,176 psi | 78% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,492 psi | 71% | 2575 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 92% | 32,764 psi | 64% | 2556 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,298 psi | 59% | 2388 fps | 95.8% |
| Winchester 760 | <<locked>> | 90% | 43,381 psi | 84% | 2743 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,690 psi | 60% | 2566 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,033 psi | 84% | 2684 fps | 99.3% |
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 56 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 120gr | Peregrine Glider GRM. Alliant Reloder-26 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,871 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 56 of the 56 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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-16, Somchem S365, ReloadSwiss RS 70 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 120gr | Peregrine Glider GRM 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.