Load Specifications
Load data in caliber 6.5 x 57 with .263 | 140gr | Prvi Partizan PSP bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country 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>> | 96% | 48,385 psi | 86% | 2648 fps | 99.3% |
| Accurate 4350 | <<locked>> | 88% | 50,285 psi | 89% | 2690 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 49,371 psi | 87% | 2776 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 82% | 50,270 psi | 89% | 2625 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 48,037 psi | 85% | 2677 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 96% | 48,907 psi | 86% | 2720 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 50,850 psi | 90% | 2644 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 48,225 psi | 85% | 2700 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 48,675 psi | 86% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 50,865 psi | 90% | 2726 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 48,051 psi | 85% | 2720 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 48,631 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,339 psi | 80% | 2700 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 48,254 psi | 85% | 2785 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,473 psi | 89% | 2759 fps | 97.9% |
| Bofors RP5 | <<locked>> | 96% | 48,051 psi | 85% | 2720 fps | 97.5% |
| Bofors RP7 | <<locked>> | 86% | 50,952 psi | 90% | 2644 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 86% | 49,240 psi | 87% | 2690 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 84% | 49,197 psi | 87% | 2651 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 48,501 psi | 86% | 2631 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,222 psi | 78% | 2730 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 86% | 48,646 psi | 86% | 2717 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 65% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 48,762 psi | 86% | 2628 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 49,458 psi | 87% | 2621 fps | 98.7% |
| IMR 4831 | <<locked>> | 90% | 51,140 psi | 90% | 2690 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,894 psi | 90% | 2667 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 98% | 49,879 psi | 88% | 2749 fps | 96.5% |
| Lovex S065 | <<locked>> | 86% | 49,690 psi | 88% | 2625 fps | 99.6% |
| Lovex S070 | <<locked>> | 88% | 50,531 psi | 89% | 2657 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,166 psi | 82% | 2612 fps | 99% |
| Norma 204 | <<locked>> | 88% | 48,921 psi | 86% | 2671 fps | 97.3% |
| Norma MRP | <<locked>> | 96% | 50,865 psi | 90% | 2799 fps | 99.1% |
| Norma URP | <<locked>> | 88% | 49,269 psi | 87% | 2677 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 50,270 psi | 89% | 2769 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 88% | 48,153 psi | 85% | 2677 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,153 psi | 85% | 2710 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,260 psi | 66% | 1722 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 48,124 psi | 85% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 50,241 psi | 89% | 2713 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 48,718 psi | 86% | 2736 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,121 psi | 78% | 2726 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 82% | 48,283 psi | 85% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 49,734 psi | 88% | 2654 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 94% | 49,922 psi | 88% | 2707 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 86% | 50,952 psi | 90% | 2644 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 49,690 psi | 88% | 2625 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 50,531 psi | 89% | 2657 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 49,458 psi | 87% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 49,429 psi | 87% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 48,834 psi | 86% | 2572 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 49,487 psi | 87% | 2703 fps | 97.8% |
| Somchem S355 | <<locked>> | 82% | 48,617 psi | 86% | 2605 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,024 psi | 90% | 2648 fps | 95.9% |
| Somchem S365 | <<locked>> | 90% | 48,631 psi | 86% | 2684 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 50,633 psi | 90% | 2687 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 49,371 psi | 87% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 51,155 psi | 90% | 2674 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 49,806 psi | 88% | 2664 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 88% | 50,444 psi | 89% | 2680 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 94% | 48,138 psi | 85% | 2694 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 51,169 psi | 90% | 2789 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 50,415 psi | 89% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 49,240 psi | 87% | 2690 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,166 psi | 83% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 50,343 psi | 89% | 2677 fps | 97.7% |
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>> | 84% | 32,314 psi | 57% | 2329 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 38,464 psi | 68% | 2480 fps | 98.8% |
| Accurate High Country | 48.9 gr | 92% | 45,963 psi | 81% | 2713 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,239 psi | 84% | 2575 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 42,264 psi | 75% | 2566 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 45,861 psi | 81% | 2661 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,747 psi | 84% | 2595 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,289 psi | 66% | 2484 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,409 psi | 75% | 2608 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,858 psi | 74% | 2559 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,624 psi | 70% | 2556 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,441 psi | 49% | 2257 fps | 96.9% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,009 psi | 55% | 2369 fps | 95.1% |
| Alliant Reloder-26 | 43.8 gr | 80% | 29,153 psi | 52% | 2356 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 41,684 psi | 74% | 2598 fps | 95.6% |
| Bofors RP5 | <<locked>> | 90% | 39,624 psi | 70% | 2556 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 42,250 psi | 75% | 2490 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,205 psi | 71% | 2520 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 43,163 psi | 76% | 2539 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,780 psi | 61% | 2382 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,044 psi | 69% | 2612 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 39,175 psi | 69% | 2533 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 48% | 1499 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,826 psi | 67% | 2418 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,729 psi | 77% | 2516 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 36,869 psi | 65% | 2431 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,848 psi | 85% | 2615 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 46,731 psi | 83% | 2694 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 41,278 psi | 73% | 2470 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,421 psi | 70% | 2451 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,634 psi | 59% | 2362 fps | 95.8% |
| Norma 204 | <<locked>> | 84% | 42,772 psi | 76% | 2559 fps | 95.7% |
| Norma MRP | 45.7 gr | 86% | 36,100 psi | 64% | 2507 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 38,058 psi | 67% | 2470 fps | 98.6% |
| Ramshot Grand | <<locked>> | 94% | 43,685 psi | 77% | 2644 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 36,927 psi | 65% | 2461 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 38,580 psi | 68% | 2523 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 49% | 1539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,034 psi | 80% | 2654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,043 psi | 67% | 2493 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,854 psi | 65% | 2500 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,348 psi | 68% | 2595 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 45,295 psi | 80% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,673 psi | 83% | 2602 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 41,031 psi | 73% | 2546 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 42,250 psi | 75% | 2490 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,278 psi | 73% | 2470 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 80% | 39,421 psi | 70% | 2451 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,456 psi | 82% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,354 psi | 82% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,205 psi | 71% | 2415 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,654 psi | 72% | 2539 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 45,672 psi | 81% | 2559 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,674 psi | 84% | 2592 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 34,490 psi | 61% | 2428 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,666 psi | 65% | 2425 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 43,497 psi | 77% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,610 psi | 70% | 2470 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 38,493 psi | 68% | 2457 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 38,827 psi | 69% | 2467 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,356 psi | 54% | 2329 fps | 97% |
| Vihtavuori N560 | <<locked>> | 94% | 48,037 psi | 85% | 2733 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,595 psi | 68% | 2441 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,466 psi | 72% | 2526 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,221 psi | 43% | 2228 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,002 psi | 72% | 2513 fps | 95.4% |
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 77 powders for 6.5 x 57 loaded with the .263 | 140gr | Prvi Partizan PSP. Winchester StaBALL HD delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,828 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.263" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Accurate High Country, Norma MRP rank at the top here: for 6.5 x 57 with the .263 | 140gr | Prvi Partizan PSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.