Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 160gr | Sierra SP SemiSp 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 Hodgdon Retumbo.
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>> | 92% | 44,817 psi | 87% | 2411 fps | 99.5% |
| Accurate 4350 | <<locked>> | 82% | 43,511 psi | 85% | 2395 fps | 99.9% |
| Accurate High Country | <<locked>> | 90% | 45,513 psi | 88% | 2526 fps | 97% |
| ADI AR 2209 | <<locked>> | 88% | 44,570 psi | 87% | 2438 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,223 psi | 88% | 2480 fps | 96.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 42,931 psi | 83% | 2431 fps | 95.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,985 psi | 74% | 2395 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 44,686 psi | 87% | 2438 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 84% | 44,599 psi | 87% | 2448 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,208 psi | 86% | 2431 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 44,701 psi | 87% | 2484 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 45,498 psi | 88% | 2477 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 44,744 psi | 87% | 2513 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 44,396 psi | 86% | 2536 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 44,092 psi | 86% | 2470 fps | 97.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,526 psi | 85% | 2497 fps | 96.9% |
| Bofors RP5 | <<locked>> | 92% | 44,701 psi | 87% | 2484 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 98% | 44,063 psi | 86% | 2457 fps | 97% |
| Hodgdon H414 | <<locked>> | 82% | 45,223 psi | 88% | 2438 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 44,933 psi | 87% | 2392 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,758 psi | 85% | 2552 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 82% | 44,411 psi | 86% | 2461 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,811 psi | 71% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 44,962 psi | 87% | 2385 fps | 98.5% |
| IMR 4831 | <<locked>> | 84% | 44,324 psi | 86% | 2395 fps | 100% |
| IMR 7828 SSC | <<locked>> | 94% | 46,296 psi | 90% | 2513 fps | 96.9% |
| Lovex S065 | <<locked>> | 82% | 45,716 psi | 89% | 2379 fps | 99.6% |
| Lovex S070 | <<locked>> | 82% | 44,135 psi | 86% | 2369 fps | 98.9% |
| Lovex S071 | <<locked>> | 98% | 45,759 psi | 89% | 2428 fps | 99.6% |
| Norma 204 | <<locked>> | 84% | 45,020 psi | 87% | 2425 fps | 97.5% |
| Norma MRP | <<locked>> | 90% | 43,845 psi | 85% | 2497 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 45,701 psi | 89% | 2434 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,934 psi | 89% | 2520 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 84% | 44,527 psi | 86% | 2434 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 96% | 44,048 psi | 86% | 2467 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 73% | 1591 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 46,325 psi | 90% | 2464 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 44,657 psi | 87% | 2484 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 43,627 psi | 85% | 2549 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 46,021 psi | 89% | 2415 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 90% | 46,253 psi | 90% | 2464 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 45,716 psi | 89% | 2379 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 82% | 44,135 psi | 86% | 2369 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 45,005 psi | 87% | 2333 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 45,847 psi | 89% | 2461 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 45,121 psi | 88% | 2441 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 43,874 psi | 85% | 2398 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 82% | 44,396 psi | 86% | 2382 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 94% | 46,340 psi | 90% | 2431 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 84% | 46,514 psi | 90% | 2431 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 44,788 psi | 87% | 2454 fps | 100% |
| Vihtavuori N565 | <<locked>> | 96% | 43,584 psi | 85% | 2470 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 46,282 psi | 90% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 45,527 psi | 88% | 2444 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 96% | 43,700 psi | 85% | 2579 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 46,325 psi | 90% | 2438 fps | 97.9% |
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>> | 80% | 29,950 psi | 58% | 2116 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 40,524 psi | 79% | 2343 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 39,653 psi | 77% | 2415 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 82% | 36,622 psi | 71% | 2280 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 42,293 psi | 82% | 2425 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 40,379 psi | 78% | 2379 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 33,591 psi | 65% | 2290 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,796 psi | 71% | 2283 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,175 psi | 76% | 2352 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,448 psi | 71% | 2277 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,724 psi | 71% | 2329 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,964 psi | 56% | 2146 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,776 psi | 56% | 2156 fps | 95.6% |
| Alliant Reloder-26 | 41.3 gr | 80% | 30,951 psi | 60% | 2254 fps | 97.6% |
| Bofors RP15 | <<locked>> | 88% | 36,260 psi | 70% | 2316 fps | 95.2% |
| Bofors RP30 | <<locked>> | 96% | 38,247 psi | 74% | 2392 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 36,724 psi | 71% | 2329 fps | 95.5% |
| Hodgdon H1000 | <<locked>> | 94% | 38,696 psi | 75% | 2352 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 42,308 psi | 82% | 2385 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,941 psi | 72% | 2254 fps | 99.9% |
| Hodgdon Retumbo | 44.4 gr | 92% | 36,114 psi | 70% | 2382 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 41,220 psi | 80% | 2405 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 54% | 1388 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,697 psi | 77% | 2290 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 38,928 psi | 76% | 2303 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 40,437 psi | 79% | 2402 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 43,149 psi | 84% | 2333 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 41,321 psi | 80% | 2320 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 29,544 psi | 57% | 2106 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 39,305 psi | 76% | 2320 fps | 96% |
| Norma MRP | <<locked>> | 82% | 33,402 psi | 65% | 2280 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 40,132 psi | 78% | 2336 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 39,943 psi | 78% | 2405 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 38,972 psi | 76% | 2333 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 90% | 35,491 psi | 69% | 2297 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 55% | 1421 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,437 psi | 79% | 2365 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,769 psi | 75% | 2372 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,011 psi | 64% | 2306 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 84% | 40,567 psi | 79% | 2316 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 35,592 psi | 69% | 2264 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,149 psi | 84% | 2333 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 41,321 psi | 80% | 2320 fps | 98.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,090 psi | 82% | 2283 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,259 psi | 68% | 2257 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 36,738 psi | 71% | 2300 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,011 psi | 66% | 2205 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 80% | 41,481 psi | 81% | 2333 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 35,549 psi | 69% | 2234 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 41,046 psi | 80% | 2339 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 32,329 psi | 63% | 2215 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 94% | 40,712 psi | 79% | 2415 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,553 psi | 79% | 2306 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,598 psi | 83% | 2392 fps | 98.5% |
| Winchester StaBALL HD | 39.7 gr | 80% | 25,628 psi | 50% | 2142 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,884 psi | 74% | 2283 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 | 160gr | Sierra SP SemiSp. Winchester StaBALL HD delivers the highest muzzle velocity at 2,579 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,579 fps. ADI AR 2217 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 160.0 gr projectile in 0.264" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Hodgdon Retumbo rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 160gr | Sierra SP SemiSp 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.