Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 143gr | Norma Bondstrike bullet and 53 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 Norma MRP.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 46,427 psi | 90% | 2559 fps | 98.7% |
| Accurate 4350 | <<locked>> | 88% | 45,571 psi | 89% | 2556 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 82% | 46,412 psi | 90% | 2497 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 43,830 psi | 85% | 2559 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 43,888 psi | 85% | 2579 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,079 psi | 89% | 2579 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,398 psi | 90% | 2631 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 43,758 psi | 85% | 2579 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,712 psi | 79% | 2546 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 46,035 psi | 89% | 2694 fps | 99.7% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,397 psi | 88% | 2612 fps | 96.2% |
| Bofors RP5 | <<locked>> | 98% | 46,398 psi | 90% | 2631 fps | 96.6% |
| Bofors RP7 | <<locked>> | 84% | 44,193 psi | 86% | 2461 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 44,730 psi | 87% | 2549 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 84% | 45,252 psi | 88% | 2516 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 43,642 psi | 85% | 2500 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 43,801 psi | 85% | 2566 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 71% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,918 psi | 87% | 2497 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,832 psi | 89% | 2493 fps | 97.7% |
| IMR 4831 | <<locked>> | 90% | 46,224 psi | 90% | 2552 fps | 99.7% |
| Lovex S065 | <<locked>> | 86% | 45,687 psi | 89% | 2493 fps | 98.8% |
| Lovex S070 | <<locked>> | 88% | 46,412 psi | 90% | 2526 fps | 98.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,263 psi | 80% | 2470 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 45,672 psi | 89% | 2651 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 44,817 psi | 87% | 2546 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 90% | 46,514 psi | 90% | 2589 fps | 98.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,873 psi | 83% | 2546 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,985 psi | 72% | 1657 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 43,816 psi | 85% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 45,121 psi | 88% | 2575 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 44,034 psi | 86% | 2589 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 82% | 44,208 psi | 86% | 2484 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 45,107 psi | 88% | 2562 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 84% | 44,193 psi | 86% | 2461 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 45,687 psi | 89% | 2493 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 88% | 46,412 psi | 90% | 2526 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 45,542 psi | 88% | 2536 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 46,021 psi | 89% | 2398 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,962 psi | 87% | 2441 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,715 psi | 87% | 2559 fps | 96.2% |
| Somchem S355 | <<locked>> | 82% | 44,672 psi | 87% | 2480 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 43,584 psi | 85% | 2556 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 45,876 psi | 89% | 2549 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 84% | 45,411 psi | 88% | 2464 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 43,947 psi | 85% | 2497 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 98% | 45,107 psi | 88% | 2523 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 88% | 46,151 psi | 90% | 2549 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 96% | 45,861 psi | 89% | 2602 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 45,919 psi | 89% | 2513 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,730 psi | 87% | 2549 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,959 psi | 81% | 2674 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,658 psi | 89% | 2536 fps | 96.1% |
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% | 33,098 psi | 64% | 2303 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 34,548 psi | 67% | 2346 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 43,613 psi | 85% | 2451 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,055 psi | 66% | 2352 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,348 psi | 74% | 2470 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,308 psi | 84% | 2526 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,236 psi | 84% | 2572 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,527 psi | 52% | 2178 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,866 psi | 66% | 2388 fps | 95.9% |
| Alliant Reloder-26 | 41.4 gr | 84% | 30,008 psi | 58% | 2329 fps | 95% |
| Bofors RP15 | <<locked>> | 98% | 42,641 psi | 83% | 2559 fps | 95.4% |
| Bofors RP5 | <<locked>> | 96% | 43,236 psi | 84% | 2572 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 39,015 psi | 76% | 2362 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 36,680 psi | 71% | 2388 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 42,221 psi | 82% | 2461 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,633 psi | 61% | 2257 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 82% | 38,116 psi | 74% | 2448 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 53% | 1444 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 39,450 psi | 77% | 2392 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,582 psi | 79% | 2395 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 33,475 psi | 65% | 2306 fps | 97.3% |
| Lovex S065 | <<locked>> | 80% | 38,014 psi | 74% | 2346 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,230 psi | 70% | 2326 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 34,069 psi | 66% | 2323 fps | 95.6% |
| Norma MRP | 43.1 gr | 90% | 37,289 psi | 72% | 2477 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,592 psi | 67% | 2343 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 33,562 psi | 65% | 2326 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 40,118 psi | 78% | 2493 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 53% | 1476 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,756 psi | 79% | 2523 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,301 psi | 67% | 2362 fps | 97.1% |
| ReloadSwiss RS 70 | 39.1 gr | 80% | 33,620 psi | 65% | 2362 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 41,452 psi | 81% | 2434 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 42,293 psi | 82% | 2510 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 39,015 psi | 76% | 2362 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,014 psi | 74% | 2346 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 36,230 psi | 70% | 2326 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,453 psi | 82% | 2484 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,163 psi | 84% | 2356 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,260 psi | 72% | 2297 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,887 psi | 81% | 2507 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 41,916 psi | 81% | 2434 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 31,125 psi | 60% | 2303 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 40,147 psi | 78% | 2441 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 40,001 psi | 78% | 2369 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,984 psi | 70% | 2343 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 39,436 psi | 77% | 2418 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 35,447 psi | 69% | 2346 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 27,050 psi | 53% | 2198 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,259 psi | 68% | 2320 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 36,680 psi | 71% | 2388 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,932 psi | 48% | 2201 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,453 psi | 82% | 2480 fps | 95.2% |
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 | 143gr | Norma Bondstrike. Alliant Reloder-26 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,694 fps. Alliant Reloder-25 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 71–90 %, leaving at least 10 % headroom. The 143.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, 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, ReloadSwiss RS 70, Norma MRP rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 143gr | Norma Bondstrike 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.