Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 156gr | Berger LRBTHP bullet and 57 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>> | 94% | 44,860 psi | 87% | 2434 fps | 99.2% |
| Accurate 4350 | <<locked>> | 84% | 43,932 psi | 85% | 2428 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,759 psi | 87% | 2461 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 94% | 45,658 psi | 89% | 2503 fps | 95.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 35,868 psi | 70% | 2359 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 86% | 45,165 psi | 88% | 2480 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 45,121 psi | 88% | 2493 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,628 psi | 87% | 2457 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,773 psi | 87% | 2507 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 45,440 psi | 88% | 2503 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,020 psi | 87% | 2539 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 44,411 psi | 86% | 2562 fps | 99.9% |
| Bofors RP15 | <<locked>> | 96% | 44,150 psi | 86% | 2493 fps | 97.1% |
| Bofors RP5 | <<locked>> | 94% | 44,773 psi | 87% | 2507 fps | 97.4% |
| Bofors RP7 | <<locked>> | 82% | 44,802 psi | 87% | 2382 fps | 98% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,701 psi | 87% | 2480 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 84% | 45,832 psi | 89% | 2470 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 82% | 46,050 psi | 89% | 2434 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 45,165 psi | 88% | 2418 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,092 psi | 86% | 2572 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 84% | 44,860 psi | 87% | 2490 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 71% | 1558 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 45,672 psi | 89% | 2418 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 46,369 psi | 90% | 2408 fps | 98.7% |
| IMR 4831 | <<locked>> | 86% | 44,527 psi | 86% | 2425 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 96% | 46,383 psi | 90% | 2530 fps | 96.3% |
| Lovex S065 | <<locked>> | 84% | 46,427 psi | 90% | 2408 fps | 99.5% |
| Lovex S070 | <<locked>> | 84% | 44,454 psi | 86% | 2395 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,847 psi | 89% | 2451 fps | 99.3% |
| Norma 204 | <<locked>> | 86% | 45,498 psi | 88% | 2451 fps | 97.1% |
| Norma MRP | <<locked>> | 92% | 43,903 psi | 85% | 2520 fps | 98.5% |
| Norma URP | <<locked>> | 86% | 46,282 psi | 90% | 2467 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 46,383 psi | 90% | 2543 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 86% | 44,860 psi | 87% | 2461 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 98% | 44,237 psi | 86% | 2487 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 73% | 1598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 46,572 psi | 90% | 2493 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 45,092 psi | 88% | 2513 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,613 psi | 85% | 2562 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 43,497 psi | 84% | 2438 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 82% | 44,802 psi | 87% | 2382 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 84% | 46,427 psi | 90% | 2408 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 84% | 44,454 psi | 86% | 2395 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 45,803 psi | 89% | 2365 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,296 psi | 90% | 2487 fps | 97.7% |
| Somchem S365 | <<locked>> | 88% | 45,194 psi | 88% | 2470 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 44,193 psi | 86% | 2421 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 82% | 46,224 psi | 90% | 2372 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 44,991 psi | 87% | 2415 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 96% | 46,267 psi | 90% | 2451 fps | 98% |
| Vihtavuori N550 | <<locked>> | 84% | 44,121 psi | 86% | 2415 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 92% | 44,918 psi | 87% | 2480 fps | 100% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 46,528 psi | 90% | 2543 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 43,772 psi | 85% | 2382 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 45,832 psi | 89% | 2470 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,557 psi | 90% | 2654 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,758 psi | 85% | 2411 fps | 96.9% |
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>> | 82% | 30,008 psi | 58% | 2139 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 38,218 psi | 74% | 2323 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 86% | 39,523 psi | 77% | 2359 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 42,888 psi | 83% | 2451 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 33,562 psi | 65% | 2303 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,101 psi | 72% | 2329 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,018 psi | 82% | 2441 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,175 psi | 76% | 2356 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 36,869 psi | 72% | 2349 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,325 psi | 53% | 2123 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,037 psi | 56% | 2178 fps | 95% |
| Alliant Reloder-26 | 40 gr | 80% | 29,051 psi | 56% | 2221 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 38,711 psi | 75% | 2388 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 36,869 psi | 72% | 2349 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,134 psi | 82% | 2333 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 98% | 41,655 psi | 81% | 2421 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 40,190 psi | 78% | 2369 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,004 psi | 84% | 2382 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,766 psi | 68% | 2234 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 36,448 psi | 71% | 2402 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 39,073 psi | 76% | 2382 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 53% | 1388 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,811 psi | 73% | 2270 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,656 psi | 85% | 2362 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 36,811 psi | 71% | 2283 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 43,540 psi | 85% | 2477 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 41,147 psi | 80% | 2316 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 39,349 psi | 76% | 2300 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 31,343 psi | 61% | 2172 fps | 95.8% |
| Norma 204 | <<locked>> | 82% | 39,842 psi | 77% | 2349 fps | 95.6% |
| Norma MRP | 40.8 gr | 84% | 33,678 psi | 65% | 2306 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,985 psi | 74% | 2316 fps | 99.1% |
| Ramshot Grand | <<locked>> | 94% | 43,178 psi | 84% | 2484 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,695 psi | 71% | 2306 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 35,911 psi | 70% | 2323 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 54% | 1424 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,956 psi | 74% | 2343 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,622 psi | 71% | 2349 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,462 psi | 69% | 2382 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 86% | 38,261 psi | 74% | 2339 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,134 psi | 82% | 2333 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,147 psi | 80% | 2316 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 80% | 39,349 psi | 76% | 2300 fps | 97.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,234 psi | 78% | 2267 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,898 psi | 74% | 2333 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,461 psi | 67% | 2280 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 34,243 psi | 67% | 2228 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 43,424 psi | 84% | 2329 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,378 psi | 76% | 2316 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 35,737 psi | 69% | 2257 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 38,754 psi | 75% | 2320 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,211 psi | 59% | 2188 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 98% | 43,352 psi | 84% | 2487 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,247 psi | 74% | 2287 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,190 psi | 78% | 2369 fps | 97.6% |
| Winchester StaBALL HD | 38.4 gr | 80% | 24,091 psi | 47% | 2103 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,189 psi | 74% | 2310 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 57 powders for 6.5 x 58 mm Mauser Port. loaded with the .264 | 156gr | Berger LRBTHP. Winchester StaBALL HD delivers the highest muzzle velocity at 2,654 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,654 fps. ADI AR 2225 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Hodgdon H1000 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 LRBTHP 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.