Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 130gr | Barnes Solid BT bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-16.
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 3100ᴾ | <<locked>> | 100% | 46,064 psi | 89% | 2671 fps | 97.9% |
| Accurate 4064 | <<locked>> | 82% | 45,905 psi | 89% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 45,281 psi | 88% | 2674 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 44,237 psi | 86% | 2579 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 44,309 psi | 86% | 2605 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 43,947 psi | 85% | 2680 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 44,063 psi | 86% | 2703 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,540 psi | 85% | 2697 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,189 psi | 74% | 2595 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 45,745 psi | 89% | 2808 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 44,222 psi | 86% | 2608 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 44,599 psi | 87% | 2582 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 82% | 44,831 psi | 87% | 2615 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 88% | 44,585 psi | 87% | 2664 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 46,412 psi | 90% | 2667 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,092 psi | 86% | 2684 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 70% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 46,528 psi | 90% | 2612 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 45,020 psi | 87% | 2615 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,296 psi | 90% | 2615 fps | 96.8% |
| IMR 4831 | <<locked>> | 92% | 46,296 psi | 90% | 2677 fps | 99.2% |
| Lovex S062 | <<locked>> | 82% | 46,311 psi | 90% | 2608 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 46,006 psi | 89% | 2615 fps | 98.1% |
| Lovex S070 | <<locked>> | 88% | 43,743 psi | 85% | 2592 fps | 96.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,072 psi | 74% | 2520 fps | 95.8% |
| Norma MRP | <<locked>> | 98% | 45,382 psi | 88% | 2759 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 45,034 psi | 87% | 2667 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 92% | 46,514 psi | 90% | 2710 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,405 psi | 71% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,034 psi | 87% | 2598 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 43,772 psi | 85% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 44,947 psi | 87% | 2694 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 44,454 psi | 86% | 2713 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 44,396 psi | 86% | 2608 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 44,599 psi | 87% | 2582 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 46,006 psi | 89% | 2615 fps | 98.1% |
| Shooters World Precision | <<locked>> | 82% | 46,311 psi | 90% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 43,743 psi | 85% | 2592 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 45,585 psi | 89% | 2661 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 46,427 psi | 90% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,614 psi | 89% | 2566 fps | 96.8% |
| Somchem S355 | <<locked>> | 84% | 45,020 psi | 87% | 2608 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 46,064 psi | 89% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 45,774 psi | 89% | 2661 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 86% | 45,687 psi | 89% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 43,918 psi | 85% | 2615 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 90% | 45,992 psi | 89% | 2667 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 98% | 45,440 psi | 88% | 2720 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 46,398 psi | 90% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,933 psi | 87% | 2671 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,986 psi | 76% | 2720 fps | 99.9% |
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>> | 94% | 37,536 psi | 73% | 2507 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,134 psi | 84% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,039 psi | 62% | 2395 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,336 psi | 80% | 2523 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,350 psi | 80% | 2549 fps | 99.6% |
| Alliant Reloder-16 | 36.4 gr | 80% | 32,242 psi | 63% | 2411 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,027 psi | 70% | 2533 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,166 psi | 55% | 2326 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,955 psi | 70% | 2539 fps | 95.3% |
| Alliant Reloder-26 | 45.2 gr | 90% | 34,534 psi | 67% | 2556 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 41,220 psi | 80% | 2552 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,945 psi | 81% | 2533 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 42,134 psi | 82% | 2566 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,073 psi | 76% | 2552 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,588 psi | 57% | 2313 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 86% | 41,205 psi | 80% | 2621 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 52% | 1516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,395 psi | 84% | 2556 fps | 99.2% |
| IMR 4350 | <<locked>> | 88% | 42,380 psi | 82% | 2562 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,814 psi | 79% | 2510 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,154 psi | 61% | 2359 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 43,540 psi | 85% | 2559 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,824 psi | 70% | 2408 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,769 psi | 75% | 2490 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 35,940 psi | 70% | 2470 fps | 95% |
| Norma MRP | <<locked>> | 96% | 42,598 psi | 83% | 2703 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,271 psi | 63% | 2398 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,450 psi | 75% | 2549 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 53% | 1552 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,105 psi | 82% | 2543 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,334 psi | 74% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,040 psi | 66% | 2467 fps | 95.9% |
| ReloadSwiss RS 70 | 41.8 gr | 84% | 36,216 psi | 70% | 2533 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 38,841 psi | 75% | 2503 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 41,945 psi | 81% | 2533 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,824 psi | 70% | 2408 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 43,540 psi | 85% | 2559 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,769 psi | 75% | 2490 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,972 psi | 78% | 2556 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,930 psi | 79% | 2438 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,001 psi | 78% | 2457 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 39,494 psi | 77% | 2503 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 28,935 psi | 56% | 2352 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 43,018 psi | 84% | 2608 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 37,565 psi | 73% | 2441 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,576 psi | 65% | 2398 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 33,330 psi | 65% | 2405 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,545 psi | 59% | 2402 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,286 psi | 65% | 2379 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 39,349 psi | 76% | 2559 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,239 psi | 55% | 2405 fps | 96.1% |
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 51 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 130gr | Barnes Solid BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,808 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,808 fps. Accurate 3100 gives the best case fill at 100 %, and 51 of the 51 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 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 130gr | Barnes Solid BT 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.