Load Specifications
Load data in caliber 6.5 x 58 mm Mauser Port. with .264 | 150gr | SUS-TAC HPT bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and ReloadSwiss RS 70.
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>> | 98% | 45,484 psi | 88% | 2470 fps | 98.7% |
| Accurate 4350 | <<locked>> | 88% | 44,918 psi | 87% | 2474 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 82% | 46,021 psi | 89% | 2418 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 94% | 46,340 psi | 90% | 2507 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,209 psi | 90% | 2503 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 46,398 psi | 90% | 2441 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 46,151 psi | 90% | 2526 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 86% | 46,354 psi | 90% | 2546 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,614 psi | 89% | 2497 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,571 psi | 89% | 2543 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,701 psi | 89% | 2539 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,306 psi | 78% | 2470 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 45,107 psi | 88% | 2602 fps | 99.7% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,570 psi | 87% | 2523 fps | 96.2% |
| Bofors RP3 | <<locked>> | 82% | 46,340 psi | 90% | 2448 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 45,571 psi | 89% | 2543 fps | 96.6% |
| Bofors RP7 | <<locked>> | 84% | 43,700 psi | 85% | 2382 fps | 97% |
| Hodgdon H414 | <<locked>> | 86% | 44,237 psi | 86% | 2467 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,556 psi | 87% | 2428 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 46,093 psi | 90% | 2464 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 46,369 psi | 90% | 2539 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 70% | 1558 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,411 psi | 86% | 2415 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,382 psi | 88% | 2411 fps | 97.8% |
| IMR 4831 | <<locked>> | 90% | 45,730 psi | 89% | 2470 fps | 99.7% |
| Lovex S065 | <<locked>> | 86% | 45,281 psi | 88% | 2411 fps | 98.9% |
| Lovex S070 | <<locked>> | 88% | 45,803 psi | 89% | 2441 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,480 psi | 79% | 2385 fps | 97.8% |
| Norma MRP | <<locked>> | 96% | 44,962 psi | 87% | 2566 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 44,179 psi | 86% | 2461 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 90% | 45,919 psi | 89% | 2507 fps | 98.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,235 psi | 82% | 2464 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 72% | 1598 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 46,108 psi | 90% | 2543 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 44,483 psi | 86% | 2490 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 46,514 psi | 90% | 2559 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 46,572 psi | 90% | 2448 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 44,585 psi | 87% | 2480 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 84% | 43,700 psi | 85% | 2382 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 86% | 45,281 psi | 88% | 2411 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 88% | 45,803 psi | 89% | 2441 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 44,759 psi | 87% | 2448 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 45,469 psi | 88% | 2316 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,686 psi | 87% | 2365 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,164 psi | 86% | 2477 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 44,280 psi | 86% | 2402 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 45,818 psi | 89% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 45,107 psi | 88% | 2464 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 84% | 44,889 psi | 87% | 2382 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 46,296 psi | 90% | 2461 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 98% | 44,237 psi | 86% | 2438 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 88% | 45,382 psi | 88% | 2464 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 96% | 44,947 psi | 87% | 2516 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 45,527 psi | 88% | 2434 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,237 psi | 86% | 2467 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,162 psi | 80% | 2582 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,831 psi | 87% | 2451 fps | 96.1% |
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>> | 88% | 32,619 psi | 63% | 2228 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 34,185 psi | 66% | 2270 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 43,439 psi | 84% | 2372 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 43,381 psi | 84% | 2454 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 43,279 psi | 84% | 2451 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,468 psi | 84% | 2392 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,866 psi | 66% | 2280 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,898 psi | 74% | 2392 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 42,757 psi | 83% | 2444 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,612 psi | 83% | 2490 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,598 psi | 48% | 2060 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,459 psi | 61% | 2260 fps | 95% |
| Alliant Reloder-26 | 39.4 gr | 84% | 29,733 psi | 58% | 2260 fps | 95.3% |
| Bofors RP15 | <<locked>> | 98% | 42,032 psi | 82% | 2477 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 43,656 psi | 85% | 2405 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,612 psi | 83% | 2490 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 38,580 psi | 75% | 2283 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 36,172 psi | 70% | 2313 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 41,727 psi | 81% | 2379 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,183 psi | 61% | 2185 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 82% | 37,550 psi | 73% | 2369 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 53% | 1391 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 38,986 psi | 76% | 2316 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,205 psi | 78% | 2316 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 32,866 psi | 64% | 2228 fps | 97.3% |
| Lovex S065 | <<locked>> | 80% | 37,579 psi | 73% | 2270 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 35,839 psi | 70% | 2251 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 33,620 psi | 65% | 2251 fps | 95.7% |
| Norma MRP | 40.9 gr | 90% | 36,579 psi | 71% | 2395 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,200 psi | 66% | 2267 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 80% | 33,112 psi | 64% | 2251 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 39,407 psi | 77% | 2408 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 54% | 1424 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,306 psi | 78% | 2441 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,605 psi | 65% | 2280 fps | 97.2% |
| ReloadSwiss RS 70 | 37.2 gr | 80% | 33,344 psi | 65% | 2290 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 80% | 41,002 psi | 80% | 2352 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 41,626 psi | 81% | 2428 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 38,580 psi | 75% | 2283 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,579 psi | 73% | 2270 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 80% | 35,839 psi | 70% | 2251 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,887 psi | 81% | 2402 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,844 psi | 83% | 2277 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,927 psi | 72% | 2221 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,234 psi | 80% | 2425 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 41,466 psi | 81% | 2352 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 30,763 psi | 60% | 2231 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 37,246 psi | 72% | 2316 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 39,552 psi | 77% | 2293 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,607 psi | 69% | 2267 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 39,015 psi | 76% | 2343 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 34,940 psi | 68% | 2267 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 26,643 psi | 52% | 2126 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,766 psi | 68% | 2241 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 36,172 psi | 70% | 2313 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,569 psi | 48% | 2129 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 94% | 41,843 psi | 81% | 2398 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 | 150gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,602 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,602 fps. Alliant Reloder-23 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 150.0 gr projectile in 0.264" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for 6.5 x 58 mm Mauser Port. with the .264 | 150gr | SUS-TAC HPT 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.