Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 156gr | Norma ORYX 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 46,079 psi | 89% | 2457 fps | 99.4% |
| Accurate 4350 | <<locked>> | 84% | 44,672 psi | 87% | 2444 fps | 99.9% |
| Accurate High Country | <<locked>> | 90% | 43,526 psi | 85% | 2516 fps | 96.1% |
| ADI AR 2209 | <<locked>> | 90% | 45,614 psi | 89% | 2480 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,593 psi | 71% | 2382 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 45,992 psi | 89% | 2484 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 45,847 psi | 89% | 2497 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 46,195 psi | 90% | 2513 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,469 psi | 88% | 2477 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,948 psi | 89% | 2530 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 46,412 psi | 90% | 2520 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,006 psi | 89% | 2562 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 45,585 psi | 89% | 2585 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 45,005 psi | 87% | 2513 fps | 97.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 41,727 psi | 81% | 2487 fps | 95.9% |
| Bofors RP5 | <<locked>> | 94% | 45,948 psi | 89% | 2530 fps | 97.8% |
| Bofors RP7 | <<locked>> | 82% | 45,759 psi | 89% | 2402 fps | 98.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,614 psi | 89% | 2507 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 82% | 43,743 psi | 85% | 2438 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 46,195 psi | 90% | 2438 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,020 psi | 87% | 2598 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 84% | 45,992 psi | 89% | 2516 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 71% | 1568 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 43,598 psi | 85% | 2385 fps | 97.9% |
| IMR 4831 | <<locked>> | 86% | 45,513 psi | 88% | 2444 fps | 99.9% |
| Lovex S065 | <<locked>> | 82% | 44,353 psi | 86% | 2379 fps | 99.3% |
| Lovex S070 | <<locked>> | 84% | 45,397 psi | 88% | 2418 fps | 98.8% |
| Lovex S071 | <<locked>> | 98% | 43,859 psi | 85% | 2421 fps | 99.1% |
| Norma 204 | <<locked>> | 86% | 46,383 psi | 90% | 2474 fps | 97.4% |
| Norma MRP | <<locked>> | 92% | 45,034 psi | 87% | 2543 fps | 98.7% |
| Norma URP | <<locked>> | 84% | 44,150 psi | 86% | 2434 fps | 99.8% |
| Ramshot Grand | <<locked>> | 94% | 44,179 psi | 86% | 2510 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 86% | 45,759 psi | 89% | 2480 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 98% | 45,194 psi | 88% | 2510 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 73% | 1604 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 44,396 psi | 86% | 2464 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 45,919 psi | 89% | 2533 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,715 psi | 87% | 2592 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 44,353 psi | 86% | 2408 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 90% | 44,730 psi | 87% | 2464 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 82% | 45,759 psi | 89% | 2402 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 44,353 psi | 86% | 2379 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 84% | 45,397 psi | 88% | 2418 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 46,412 psi | 90% | 2382 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 44,324 psi | 86% | 2461 fps | 97.4% |
| Somchem S365 | <<locked>> | 88% | 46,282 psi | 90% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 45,092 psi | 88% | 2444 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 84% | 45,658 psi | 89% | 2428 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 94% | 44,556 psi | 87% | 2428 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 84% | 45,078 psi | 88% | 2434 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 92% | 45,905 psi | 89% | 2500 fps | 100% |
| Vihtavuori N565 | <<locked>> | 98% | 44,454 psi | 86% | 2510 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 44,875 psi | 87% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 43,743 psi | 85% | 2438 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 44,701 psi | 87% | 2628 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,527 psi | 86% | 2431 fps | 97.2% |
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% | 30,835 psi | 60% | 2162 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 38,986 psi | 76% | 2343 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 40,582 psi | 79% | 2461 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 84% | 37,681 psi | 73% | 2326 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 34,316 psi | 67% | 2326 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 37,797 psi | 73% | 2329 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,782 psi | 73% | 2349 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,076 psi | 84% | 2461 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 37,420 psi | 73% | 2323 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,652 psi | 73% | 2372 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,876 psi | 54% | 2142 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,689 psi | 58% | 2201 fps | 95.5% |
| Alliant Reloder-26 | 40.8 gr | 80% | 29,762 psi | 58% | 2244 fps | 96.6% |
| Bofors RP15 | 42.2 gr | 90% | 37,202 psi | 72% | 2362 fps | 95% |
| Bofors RP30 | <<locked>> | 98% | 39,262 psi | 76% | 2438 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 37,652 psi | 73% | 2372 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 42,786 psi | 83% | 2349 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 39,972 psi | 78% | 2395 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 40,872 psi | 79% | 2385 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,520 psi | 69% | 2254 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,115 psi | 72% | 2425 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 39,885 psi | 77% | 2402 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 53% | 1398 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,450 psi | 75% | 2287 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 37,550 psi | 73% | 2303 fps | 99.2% |
| Lovex S065 | <<locked>> | 80% | 41,800 psi | 81% | 2333 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,001 psi | 78% | 2320 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 30,168 psi | 59% | 2146 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 38,029 psi | 74% | 2316 fps | 95.1% |
| Norma MRP | <<locked>> | 84% | 34,447 psi | 67% | 2329 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,696 psi | 75% | 2336 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 41,191 psi | 80% | 2451 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 37,594 psi | 73% | 2329 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 92% | 36,535 psi | 71% | 2343 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 54% | 1430 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,943 psi | 76% | 2365 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,463 psi | 73% | 2369 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 33,910 psi | 66% | 2349 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 86% | 41,742 psi | 81% | 2362 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 36,521 psi | 71% | 2306 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,786 psi | 83% | 2349 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,800 psi | 81% | 2333 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 40,001 psi | 78% | 2320 fps | 97.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,828 psi | 79% | 2283 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,798 psi | 75% | 2356 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 35,215 psi | 68% | 2300 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 34,867 psi | 68% | 2247 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 80% | 40,059 psi | 78% | 2333 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 36,506 psi | 71% | 2277 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 39,668 psi | 77% | 2339 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 30,937 psi | 60% | 2208 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 96% | 41,742 psi | 81% | 2461 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,059 psi | 76% | 2306 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,162 psi | 80% | 2392 fps | 97.9% |
| Winchester StaBALL HD | 39.2 gr | 80% | 24,685 psi | 48% | 2129 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,943 psi | 76% | 2329 fps | 95.6% |
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 | Norma ORYX. Winchester StaBALL HD delivers the highest muzzle velocity at 2,628 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,628 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 1:10.0 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 | Norma ORYX 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.