Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 156gr | RWS Evolution bullet and 56 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-26 and Bofors RP15.
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>> | 94% | 46,282 psi | 90% | 2464 fps | 99.5% |
| Accurate 4350 | <<locked>> | 84% | 44,918 psi | 87% | 2448 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 46,093 psi | 90% | 2490 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,709 psi | 71% | 2388 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 46,079 psi | 89% | 2503 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 46,427 psi | 90% | 2516 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,643 psi | 89% | 2480 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 46,122 psi | 90% | 2533 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 43,801 psi | 85% | 2480 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,180 psi | 90% | 2566 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 45,803 psi | 89% | 2589 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 45,469 psi | 88% | 2523 fps | 97.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,192 psi | 82% | 2497 fps | 96.1% |
| Bofors RP5 | <<locked>> | 94% | 46,122 psi | 90% | 2533 fps | 97.8% |
| Bofors RP7 | <<locked>> | 82% | 45,977 psi | 89% | 2408 fps | 98.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,687 psi | 89% | 2510 fps | 97% |
| Hodgdon H414 | <<locked>> | 82% | 43,990 psi | 85% | 2444 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 46,470 psi | 90% | 2444 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,179 psi | 88% | 2605 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 84% | 46,180 psi | 90% | 2520 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 71% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 43,801 psi | 85% | 2392 fps | 98% |
| IMR 4831 | <<locked>> | 86% | 45,730 psi | 89% | 2448 fps | 100% |
| IMR 7828 SSC | <<locked>> | 94% | 44,773 psi | 87% | 2507 fps | 96% |
| Lovex S065 | <<locked>> | 82% | 44,585 psi | 87% | 2385 fps | 99.4% |
| Lovex S070 | <<locked>> | 84% | 45,614 psi | 89% | 2421 fps | 98.9% |
| Lovex S071 | <<locked>> | 98% | 44,353 psi | 86% | 2431 fps | 99.2% |
| Norma 204 | <<locked>> | 84% | 43,526 psi | 85% | 2425 fps | 96.8% |
| Norma MRP | <<locked>> | 92% | 45,542 psi | 88% | 2556 fps | 98.9% |
| Norma URP | <<locked>> | 84% | 44,382 psi | 86% | 2441 fps | 99.9% |
| Ramshot Grand | <<locked>> | 94% | 44,643 psi | 87% | 2520 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 86% | 45,977 psi | 89% | 2484 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 98% | 45,658 psi | 89% | 2516 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 73% | 1608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 44,918 psi | 87% | 2474 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 46,441 psi | 90% | 2543 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,165 psi | 88% | 2602 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 44,875 psi | 87% | 2421 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 90% | 44,904 psi | 87% | 2470 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 82% | 45,977 psi | 89% | 2408 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 44,585 psi | 87% | 2385 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 84% | 45,614 psi | 89% | 2421 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 43,932 psi | 85% | 2339 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 44,512 psi | 86% | 2464 fps | 97.4% |
| Somchem S365 | <<locked>> | 88% | 46,572 psi | 90% | 2493 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 45,556 psi | 88% | 2451 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 45,905 psi | 89% | 2434 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 94% | 44,715 psi | 87% | 2431 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 84% | 45,281 psi | 88% | 2438 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 92% | 46,166 psi | 90% | 2503 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 45,948 psi | 89% | 2543 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 98% | 44,889 psi | 87% | 2520 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 45,063 psi | 88% | 2408 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 43,990 psi | 85% | 2444 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 44,904 psi | 87% | 2631 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 45,005 psi | 87% | 2441 fps | 97.3% |
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>> | 82% | 31,024 psi | 60% | 2169 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 39,247 psi | 76% | 2349 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 84% | 37,869 psi | 74% | 2333 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,621 psi | 67% | 2339 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,029 psi | 74% | 2356 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,308 psi | 84% | 2467 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 37,608 psi | 73% | 2329 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,855 psi | 74% | 2379 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,050 psi | 54% | 2146 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,849 psi | 58% | 2208 fps | 95.7% |
| Alliant Reloder-26 | 41 gr | 80% | 29,921 psi | 58% | 2251 fps | 96.7% |
| Bofors RP15 | 42.4 gr | 90% | 37,362 psi | 73% | 2365 fps | 95.1% |
| Bofors RP30 | <<locked>> | 98% | 39,378 psi | 76% | 2441 fps | 95.1% |
| Bofors RP5 | <<locked>> | 88% | 37,855 psi | 74% | 2379 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 43,018 psi | 84% | 2356 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 40,118 psi | 78% | 2402 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 41,089 psi | 80% | 2392 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,752 psi | 69% | 2260 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,260 psi | 72% | 2431 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,045 psi | 78% | 2405 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 53% | 1398 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,609 psi | 75% | 2293 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 37,768 psi | 73% | 2306 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 41,800 psi | 81% | 2451 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 42,047 psi | 82% | 2339 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,234 psi | 78% | 2326 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,371 psi | 59% | 2152 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 38,218 psi | 74% | 2320 fps | 95.2% |
| Norma MRP | <<locked>> | 84% | 34,635 psi | 67% | 2333 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 38,943 psi | 76% | 2343 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 41,626 psi | 81% | 2461 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 37,797 psi | 73% | 2336 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 92% | 36,912 psi | 72% | 2349 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,992 psi | 54% | 1434 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,160 psi | 76% | 2369 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,652 psi | 73% | 2375 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,258 psi | 67% | 2359 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 86% | 41,959 psi | 81% | 2365 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 36,724 psi | 71% | 2313 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,018 psi | 84% | 2356 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,047 psi | 82% | 2339 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 40,234 psi | 78% | 2326 fps | 97.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,060 psi | 80% | 2290 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,376 psi | 71% | 2306 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,462 psi | 69% | 2306 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,056 psi | 68% | 2251 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 80% | 40,292 psi | 78% | 2336 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 36,695 psi | 71% | 2283 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 39,885 psi | 77% | 2343 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,183 psi | 61% | 2215 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 90% | 42,946 psi | 83% | 2487 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 41,930 psi | 81% | 2464 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,233 psi | 76% | 2310 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,379 psi | 80% | 2395 fps | 98% |
| Winchester StaBALL HD | 39.4 gr | 80% | 24,816 psi | 48% | 2136 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,146 psi | 76% | 2336 fps | 95.7% |
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 | 156gr | RWS Evolution. Winchester StaBALL HD delivers the highest muzzle velocity at 2,631 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,631 fps. ADI AR 2225 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 71–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.264" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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. Winchester StaBALL HD, Alliant Reloder-26, Bofors RP15 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 156gr | RWS Evolution 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.