Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 160gr | Hornady InterLock bullet and 58 powders. The key underlying parameters are shown in the table above.
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% | 45,136 psi | 88% | 2418 fps | 99.5% |
| Accurate 4350 | <<locked>> | 82% | 43,569 psi | 85% | 2398 fps | 99.9% |
| Accurate High Country | <<locked>> | 90% | 45,832 psi | 89% | 2533 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 88% | 44,556 psi | 87% | 2438 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,208 psi | 88% | 2480 fps | 96.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 43,192 psi | 84% | 2438 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,203 psi | 74% | 2402 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 44,672 psi | 87% | 2451 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,222 psi | 86% | 2431 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 44,715 psi | 87% | 2484 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 45,527 psi | 88% | 2480 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 45,020 psi | 87% | 2520 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 44,454 psi | 86% | 2536 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 44,106 psi | 86% | 2470 fps | 97.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,830 psi | 85% | 2503 fps | 97% |
| Bofors RP5 | <<locked>> | 92% | 44,715 psi | 87% | 2484 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 98% | 44,324 psi | 86% | 2464 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 82% | 45,585 psi | 89% | 2444 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 90% | 45,252 psi | 88% | 2431 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 44,991 psi | 87% | 2392 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 44,048 psi | 86% | 2559 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 82% | 44,440 psi | 86% | 2464 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 71% | 1552 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 45,295 psi | 88% | 2392 fps | 98.6% |
| IMR 4831 | <<locked>> | 84% | 44,338 psi | 86% | 2398 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,454 psi | 86% | 2382 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 94% | 46,296 psi | 90% | 2513 fps | 96.9% |
| Lovex S065 | <<locked>> | 82% | 46,064 psi | 89% | 2382 fps | 99.7% |
| Lovex S070 | <<locked>> | 82% | 44,179 psi | 86% | 2372 fps | 98.9% |
| Lovex S071 | <<locked>> | 98% | 46,122 psi | 90% | 2434 fps | 99.6% |
| Norma 204 | <<locked>> | 84% | 45,063 psi | 88% | 2425 fps | 97.5% |
| Norma MRP | <<locked>> | 90% | 44,164 psi | 86% | 2503 fps | 98.9% |
| Norma URP | <<locked>> | 84% | 46,035 psi | 89% | 2441 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,282 psi | 90% | 2526 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 84% | 44,585 psi | 87% | 2434 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 96% | 44,048 psi | 86% | 2467 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 73% | 1594 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 46,369 psi | 90% | 2467 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 44,686 psi | 87% | 2484 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 43,613 psi | 85% | 2549 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 46,064 psi | 89% | 2415 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 88% | 43,540 psi | 85% | 2421 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 46,064 psi | 89% | 2382 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 82% | 44,179 psi | 86% | 2372 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 45,049 psi | 87% | 2336 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 46,195 psi | 90% | 2467 fps | 98.1% |
| Somchem S365 | <<locked>> | 86% | 45,194 psi | 88% | 2441 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 44,150 psi | 86% | 2405 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 82% | 44,469 psi | 86% | 2385 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 94% | 46,325 psi | 90% | 2431 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 82% | 43,874 psi | 85% | 2388 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 90% | 44,831 psi | 87% | 2454 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 44,512 psi | 86% | 2493 fps | 96% |
| Vihtavuori N565 | <<locked>> | 96% | 43,627 psi | 85% | 2470 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 46,586 psi | 90% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 45,585 psi | 89% | 2444 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 44,150 psi | 86% | 2585 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,511 psi | 85% | 2392 fps | 97.3% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 30,211 psi | 59% | 2123 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 40,857 psi | 79% | 2352 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 39,929 psi | 78% | 2421 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 82% | 36,666 psi | 71% | 2283 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 42,583 psi | 83% | 2431 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 98% | 40,364 psi | 78% | 2382 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 33,576 psi | 65% | 2290 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,479 psi | 77% | 2359 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,463 psi | 71% | 2280 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,767 psi | 71% | 2329 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,037 psi | 56% | 2149 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,008 psi | 56% | 2162 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,227 psi | 61% | 2260 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 36,550 psi | 71% | 2323 fps | 95.3% |
| Bofors RP30 | <<locked>> | 96% | 38,508 psi | 75% | 2398 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 36,767 psi | 71% | 2329 fps | 95.5% |
| Hodgdon H1000 | <<locked>> | 94% | 38,986 psi | 76% | 2356 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 42,641 psi | 83% | 2395 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 88% | 42,598 psi | 83% | 2382 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,999 psi | 72% | 2257 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,376 psi | 71% | 2388 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 41,524 psi | 81% | 2411 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 54% | 1388 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,987 psi | 78% | 2297 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 39,001 psi | 76% | 2303 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 41,669 psi | 81% | 2333 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 40,727 psi | 79% | 2408 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 43,163 psi | 84% | 2333 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 41,669 psi | 81% | 2326 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 29,588 psi | 57% | 2110 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 39,363 psi | 76% | 2320 fps | 96% |
| Norma MRP | <<locked>> | 82% | 33,678 psi | 65% | 2287 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,480 psi | 79% | 2343 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 40,234 psi | 78% | 2411 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 39,044 psi | 76% | 2333 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 90% | 35,737 psi | 69% | 2303 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 54% | 1417 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,451 psi | 79% | 2365 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,044 psi | 76% | 2379 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,228 psi | 65% | 2313 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 84% | 40,567 psi | 79% | 2316 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 35,650 psi | 69% | 2264 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,163 psi | 84% | 2333 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 41,669 psi | 81% | 2326 fps | 98.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,424 psi | 82% | 2290 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,317 psi | 69% | 2260 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,057 psi | 72% | 2306 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,040 psi | 66% | 2205 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 80% | 41,829 psi | 81% | 2339 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 35,824 psi | 70% | 2241 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 41,075 psi | 80% | 2339 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 32,401 psi | 63% | 2218 fps | 98.8% |
| Vihtavuori N560 | <<locked>> | 88% | 41,640 psi | 81% | 2438 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 41,002 psi | 80% | 2425 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,596 psi | 79% | 2306 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,641 psi | 83% | 2395 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,657 psi | 50% | 2146 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,898 psi | 74% | 2287 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 58 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 160gr | Hornady InterLock. Winchester StaBALL HD delivers the highest muzzle velocity at 2,585 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,585 fps. ADI AR 2217 gives the best case fill at 100 %, and 58 of the 58 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.