Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 140gr | Speer Hot-Cor bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Winchester StaBALL HD.
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>> | 96% | 45,281 psi | 88% | 2575 fps | 98.6% |
| Accurate 4350 | <<locked>> | 86% | 44,382 psi | 86% | 2575 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 45,469 psi | 88% | 2605 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 45,469 psi | 88% | 2631 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 45,803 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,136 psi | 88% | 2602 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,165 psi | 88% | 2648 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 45,571 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,583 psi | 83% | 2628 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 44,672 psi | 87% | 2707 fps | 99.6% |
| Bofors RP15 | <<locked>> | 98% | 44,251 psi | 86% | 2628 fps | 96% |
| Bofors RP5 | <<locked>> | 96% | 45,165 psi | 88% | 2648 fps | 96.4% |
| Bofors RP7 | <<locked>> | 84% | 45,542 psi | 88% | 2530 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 86% | 46,282 psi | 90% | 2618 fps | 98% |
| Hodgdon H4350 | <<locked>> | 84% | 46,557 psi | 90% | 2582 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 45,629 psi | 89% | 2569 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 45,774 psi | 89% | 2641 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 71% | 1657 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 46,311 psi | 90% | 2566 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,541 psi | 87% | 2510 fps | 97.5% |
| IMR 4831 | <<locked>> | 88% | 44,947 psi | 87% | 2572 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 44,396 psi | 86% | 2510 fps | 98.6% |
| Lovex S070 | <<locked>> | 86% | 45,208 psi | 88% | 2546 fps | 97.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,120 psi | 84% | 2539 fps | 98.2% |
| Norma 204 | <<locked>> | 88% | 46,166 psi | 90% | 2598 fps | 96.2% |
| Norma MRP | <<locked>> | 94% | 44,498 psi | 86% | 2667 fps | 97.6% |
| Norma URP | <<locked>> | 86% | 43,729 psi | 85% | 2566 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 45,382 psi | 88% | 2608 fps | 98.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,904 psi | 87% | 2628 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 72% | 1696 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 45,513 psi | 88% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 43,859 psi | 85% | 2589 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 45,818 psi | 89% | 2664 fps | 99.4% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,336 psi | 80% | 2638 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 45,876 psi | 89% | 2549 fps | 100% |
| Rottweil R 905 | <<locked>> | 92% | 43,990 psi | 85% | 2582 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 84% | 45,542 psi | 88% | 2530 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 44,396 psi | 86% | 2510 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 86% | 45,208 psi | 88% | 2546 fps | 97.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,729 psi | 85% | 2461 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,569 psi | 85% | 2575 fps | 95.9% |
| Somchem S355 | <<locked>> | 82% | 46,282 psi | 90% | 2549 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 45,643 psi | 89% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 44,585 psi | 87% | 2562 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 82% | 44,150 psi | 86% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 45,600 psi | 89% | 2562 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 96% | 43,947 psi | 85% | 2543 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 86% | 44,875 psi | 87% | 2566 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 94% | 44,788 psi | 87% | 2621 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 44,643 psi | 87% | 2533 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 43,598 psi | 85% | 2569 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,859 psi | 85% | 2749 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>> | 88% | 34,519 psi | 67% | 2365 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 36,143 psi | 70% | 2415 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 42,815 psi | 83% | 2556 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,462 psi | 69% | 2425 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,987 psi | 78% | 2543 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,250 psi | 82% | 2546 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,250 psi | 82% | 2592 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,817 psi | 50% | 2188 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,054 psi | 64% | 2402 fps | 95.6% |
| Alliant Reloder-26 | 43.6 gr | 84% | 31,357 psi | 61% | 2402 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 41,669 psi | 81% | 2579 fps | 95.1% |
| Bofors RP5 | <<locked>> | 94% | 42,250 psi | 82% | 2592 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,190 psi | 78% | 2425 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 38,116 psi | 74% | 2457 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,075 psi | 80% | 2477 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,837 psi | 64% | 2323 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 82% | 39,537 psi | 77% | 2520 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 53% | 1476 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 38,348 psi | 74% | 2408 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,727 psi | 81% | 2457 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 34,737 psi | 67% | 2369 fps | 97.7% |
| Lovex S065 | <<locked>> | 80% | 39,218 psi | 76% | 2411 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 37,391 psi | 73% | 2388 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 33,315 psi | 65% | 2339 fps | 95.3% |
| Norma 204 | <<locked>> | 86% | 43,163 psi | 84% | 2543 fps | 95.4% |
| Norma MRP | 44.4 gr | 88% | 36,361 psi | 71% | 2493 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,868 psi | 70% | 2405 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 80% | 34,766 psi | 68% | 2392 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 39,030 psi | 76% | 2510 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 54% | 1516 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,482 psi | 83% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,665 psi | 69% | 2428 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,896 psi | 68% | 2431 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,653 psi | 75% | 2575 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 42,859 psi | 83% | 2497 fps | 100% |
| Rottweil R 905 | <<locked>> | 90% | 41,321 psi | 80% | 2530 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,190 psi | 78% | 2425 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,218 psi | 76% | 2411 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 80% | 37,391 psi | 73% | 2388 fps | 95.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,290 psi | 74% | 2356 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,930 psi | 79% | 2523 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 43,323 psi | 84% | 2497 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 32,547 psi | 63% | 2372 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,276 psi | 76% | 2464 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 41,249 psi | 80% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,463 psi | 73% | 2411 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 94% | 41,075 psi | 80% | 2490 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 36,796 psi | 71% | 2408 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,239 psi | 55% | 2260 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,492 psi | 71% | 2382 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,116 psi | 74% | 2457 fps | 95.9% |
| Winchester StaBALL HD | 41.9 gr | 84% | 25,889 psi | 50% | 2270 fps | 96.3% |
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 52 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 140gr | Speer Hot-Cor. Winchester StaBALL HD delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,749 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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. Norma MRP, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 140gr | Speer Hot-Cor 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.