Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 130gr | Brenneke TAG bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 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 3100 | <<locked>> | 98% | 43,671 psi | 85% | 2644 fps | 97.6% |
| Accurate 4064 | <<locked>> | 82% | 46,006 psi | 89% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 45,963 psi | 89% | 2703 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 82% | 44,440 psi | 86% | 2602 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 44,715 psi | 87% | 2628 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 44,483 psi | 86% | 2710 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 44,860 psi | 87% | 2733 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,295 psi | 86% | 2723 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,798 psi | 75% | 2628 fps | 96.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 43,395 psi | 84% | 2776 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 44,440 psi | 86% | 2631 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 45,063 psi | 88% | 2612 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 45,353 psi | 88% | 2644 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 88% | 45,368 psi | 88% | 2697 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 44,382 psi | 86% | 2648 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,846 psi | 87% | 2717 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 70% | 1713 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 45,455 psi | 88% | 2641 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,932 psi | 85% | 2589 fps | 96.5% |
| IMR 4831 | <<locked>> | 90% | 43,859 psi | 85% | 2648 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 46,412 psi | 90% | 2641 fps | 98.4% |
| Lovex S070 | <<locked>> | 88% | 44,425 psi | 86% | 2621 fps | 97% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,624 psi | 75% | 2546 fps | 96.2% |
| Norma MRP | <<locked>> | 98% | 46,296 psi | 90% | 2792 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 45,556 psi | 88% | 2694 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 44,353 psi | 86% | 2684 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 71% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,498 psi | 88% | 2625 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 44,614 psi | 87% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 45,905 psi | 89% | 2726 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 44,904 psi | 87% | 2740 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 84% | 44,614 psi | 87% | 2628 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 45,063 psi | 88% | 2612 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 46,412 psi | 90% | 2641 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 88% | 44,425 psi | 86% | 2621 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 46,195 psi | 90% | 2687 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 44,135 psi | 86% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,890 psi | 89% | 2589 fps | 97.1% |
| Somchem S355 | <<locked>> | 84% | 45,281 psi | 88% | 2631 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 43,947 psi | 85% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 46,470 psi | 90% | 2690 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 86% | 46,267 psi | 90% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 44,440 psi | 86% | 2641 fps | 98.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,629 psi | 89% | 2664 fps | 96% |
| Vihtavuori N550 | <<locked>> | 88% | 43,598 psi | 85% | 2641 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 45,963 psi | 89% | 2743 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 44,164 psi | 86% | 2618 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 45,701 psi | 89% | 2703 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,581 psi | 77% | 2753 fps | 100% |
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 3100 | <<locked>> | 92% | 35,418 psi | 69% | 2477 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 43,207 psi | 84% | 2575 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,097 psi | 62% | 2411 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,800 psi | 81% | 2549 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,771 psi | 81% | 2572 fps | 99.7% |
| Alliant Reloder-16 | 37.7 gr | 80% | 32,285 psi | 63% | 2431 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,201 psi | 70% | 2552 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,079 psi | 55% | 2343 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,303 psi | 71% | 2569 fps | 95.9% |
| Alliant Reloder-26 | 45.8 gr | 88% | 32,387 psi | 63% | 2513 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 41,713 psi | 81% | 2582 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 42,148 psi | 82% | 2556 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 42,351 psi | 82% | 2585 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 39,566 psi | 77% | 2579 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,776 psi | 58% | 2333 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 86% | 41,887 psi | 81% | 2654 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 52% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,844 psi | 83% | 2589 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,133 psi | 80% | 2533 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,328 psi | 61% | 2375 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 36,027 psi | 70% | 2431 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 38,841 psi | 75% | 2510 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 36,201 psi | 70% | 2493 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 40,321 psi | 78% | 2671 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 32,518 psi | 63% | 2418 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 84% | 36,230 psi | 70% | 2513 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 53% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,598 psi | 83% | 2572 fps | 96.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,595 psi | 75% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,010 psi | 62% | 2431 fps | 95.3% |
| ReloadSwiss RS 70 | 42.3 gr | 82% | 34,055 psi | 66% | 2493 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 39,044 psi | 76% | 2523 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 42,148 psi | 82% | 2556 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,027 psi | 70% | 2431 fps | 95.7% |
| Shooters World SW4350 | <<locked>> | 84% | 38,841 psi | 75% | 2510 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,335 psi | 78% | 2575 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,162 psi | 80% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,335 psi | 78% | 2484 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 39,769 psi | 77% | 2530 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 29,051 psi | 56% | 2369 fps | 97.9% |
| Somchem S385 | <<locked>> | 92% | 40,567 psi | 79% | 2575 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 37,869 psi | 74% | 2464 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 33,852 psi | 66% | 2421 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 42,873 psi | 83% | 2612 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 33,446 psi | 65% | 2421 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 30,574 psi | 59% | 2415 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,489 psi | 65% | 2398 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 39,827 psi | 77% | 2585 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,426 psi | 51% | 2359 fps | 95.1% |
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 49 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 130gr | Brenneke TAG. Norma MRP delivers the highest muzzle velocity at 2,792 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,792 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 49 of the 49 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 130.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, 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-26, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 130gr | Brenneke TAG 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.