Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 156gr | Berger Elite Hunter bullet and 56 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 46,412 psi | 90% | 2451 fps | 99.3% |
| Accurate 4350 | <<locked>> | 86% | 45,440 psi | 88% | 2444 fps | 99.9% |
| Accurate High Country | <<locked>> | 92% | 43,976 psi | 85% | 2513 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 92% | 46,572 psi | 90% | 2480 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,572 psi | 90% | 2480 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 46,398 psi | 90% | 2493 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 43,787 psi | 85% | 2464 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,006 psi | 89% | 2474 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,296 psi | 90% | 2523 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 43,990 psi | 85% | 2474 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,511 psi | 85% | 2503 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 45,963 psi | 89% | 2582 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 45,324 psi | 88% | 2503 fps | 97.2% |
| Bofors RP5 | <<locked>> | 96% | 46,296 psi | 90% | 2523 fps | 97.6% |
| Bofors RP7 | <<locked>> | 82% | 43,830 psi | 85% | 2352 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 84% | 44,541 psi | 87% | 2438 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 82% | 44,759 psi | 87% | 2402 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 43,801 psi | 85% | 2388 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,641 psi | 83% | 2533 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 84% | 43,511 psi | 85% | 2457 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 71% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 44,512 psi | 86% | 2388 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 45,121 psi | 88% | 2375 fps | 98.3% |
| IMR 4831 | <<locked>> | 88% | 46,093 psi | 90% | 2441 fps | 99.9% |
| Lovex S065 | <<locked>> | 84% | 45,440 psi | 88% | 2382 fps | 99.3% |
| Lovex S070 | <<locked>> | 86% | 46,282 psi | 90% | 2418 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,353 psi | 86% | 2418 fps | 99% |
| Norma 204 | <<locked>> | 86% | 44,338 psi | 86% | 2421 fps | 96.7% |
| Norma MRP | <<locked>> | 94% | 45,353 psi | 88% | 2536 fps | 98.6% |
| Norma URP | <<locked>> | 86% | 44,904 psi | 87% | 2434 fps | 99.8% |
| Ramshot Grand | <<locked>> | 96% | 44,802 psi | 87% | 2500 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 88% | 46,499 psi | 90% | 2480 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,876 psi | 89% | 2503 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 72% | 1581 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 46,499 psi | 90% | 2507 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 44,918 psi | 87% | 2461 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 43,656 psi | 85% | 2477 fps | 99.6% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,380 psi | 82% | 2526 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 90% | 45,194 psi | 88% | 2408 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 92% | 45,150 psi | 88% | 2457 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 82% | 43,830 psi | 85% | 2352 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 45,440 psi | 88% | 2382 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 86% | 46,282 psi | 90% | 2418 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 44,686 psi | 87% | 2336 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,744 psi | 87% | 2454 fps | 97.2% |
| Somchem S365 | <<locked>> | 88% | 43,787 psi | 85% | 2441 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 45,571 psi | 89% | 2438 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 82% | 45,136 psi | 88% | 2346 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 46,557 psi | 90% | 2431 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 96% | 44,933 psi | 87% | 2418 fps | 97.6% |
| Vihtavuori N550 | <<locked>> | 86% | 45,643 psi | 89% | 2431 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 94% | 46,195 psi | 90% | 2493 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 45,484 psi | 88% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 44,541 psi | 87% | 2438 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,991 psi | 87% | 2618 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,324 psi | 88% | 2431 fps | 97% |
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>> | 84% | 31,067 psi | 60% | 2159 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 37,072 psi | 72% | 2293 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 41,162 psi | 80% | 2461 fps | 95% |
| ADI AR 2209 | <<locked>> | 88% | 40,973 psi | 80% | 2379 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 38,493 psi | 75% | 2329 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,114 psi | 70% | 2300 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,712 psi | 79% | 2408 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,087 psi | 74% | 2323 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 37,927 psi | 74% | 2362 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,527 psi | 52% | 2093 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 29,994 psi | 58% | 2195 fps | 95.3% |
| Alliant Reloder-26 | 38.9 gr | 80% | 28,108 psi | 55% | 2188 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 39,871 psi | 77% | 2402 fps | 95.6% |
| Bofors RP5 | <<locked>> | 90% | 37,927 psi | 74% | 2362 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,133 psi | 80% | 2303 fps | 97% |
| Hodgdon H414 | <<locked>> | 80% | 38,914 psi | 76% | 2336 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,047 psi | 82% | 2352 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,721 psi | 65% | 2208 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 37,376 psi | 73% | 2415 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 37,768 psi | 73% | 2343 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 53% | 1378 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 36,869 psi | 72% | 2244 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,395 psi | 82% | 2329 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 35,534 psi | 69% | 2251 fps | 98.6% |
| Lovex S065 | <<locked>> | 80% | 40,132 psi | 78% | 2287 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 38,363 psi | 75% | 2274 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 30,182 psi | 59% | 2139 fps | 95.1% |
| Norma 204 | <<locked>> | 82% | 38,682 psi | 75% | 2316 fps | 95% |
| Norma MRP | 40.6 gr | 86% | 34,853 psi | 68% | 2326 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 36,912 psi | 72% | 2290 fps | 98.8% |
| Ramshot Grand | <<locked>> | 94% | 41,930 psi | 81% | 2448 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 35,534 psi | 69% | 2274 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 37,231 psi | 72% | 2339 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 54% | 1411 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,250 psi | 84% | 2454 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,666 psi | 71% | 2310 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,578 psi | 69% | 2316 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,782 psi | 71% | 2402 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 88% | 42,380 psi | 82% | 2356 fps | 95% |
| Rottweil R 905 | <<locked>> | 88% | 39,595 psi | 77% | 2359 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,133 psi | 80% | 2303 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,132 psi | 78% | 2287 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 80% | 38,363 psi | 75% | 2274 fps | 97.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,073 psi | 76% | 2238 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,218 psi | 76% | 2352 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 33,373 psi | 65% | 2254 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 35,346 psi | 69% | 2244 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 42,337 psi | 82% | 2303 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,334 psi | 74% | 2287 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 37,028 psi | 72% | 2274 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 37,797 psi | 73% | 2290 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 29,196 psi | 57% | 2159 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,246 psi | 72% | 2260 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 39,160 psi | 76% | 2339 fps | 97.2% |
| Winchester StaBALL HD | 37.3 gr | 80% | 23,279 psi | 45% | 2064 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 39,450 psi | 77% | 2326 fps | 95.4% |
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 | Berger Elite Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 2,618 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,618 fps. Alliant Reloder-25 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 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon Retumbo, 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, Winchester StaBALL HD, Norma MRP rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 156gr | Berger Elite Hunter 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.