Load Specifications
Load data in caliber 6.5 x 55 Swedish with .263 | 139gr | Prvi Partizan SP BT bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 49,458 psi | 90% | 2667 fps | 99.3% |
| Accurate 4350 | <<locked>> | 88% | 48,298 psi | 88% | 2664 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 82% | 48,646 psi | 88% | 2598 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 49,400 psi | 90% | 2700 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 49,095 psi | 89% | 2621 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 49,240 psi | 89% | 2717 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 46,746 psi | 85% | 2687 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,675 psi | 88% | 2687 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 49,139 psi | 89% | 2743 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,632 psi | 90% | 2733 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,279 psi | 79% | 2664 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 49,066 psi | 89% | 2805 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,095 psi | 87% | 2723 fps | 97.2% |
| Bofors RP3 | <<locked>> | 82% | 49,530 psi | 90% | 2631 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 49,139 psi | 89% | 2743 fps | 97.6% |
| Bofors RP7 | <<locked>> | 86% | 49,182 psi | 89% | 2615 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 82% | 49,821 psi | 90% | 2644 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 86% | 47,152 psi | 86% | 2654 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 84% | 47,413 psi | 86% | 2618 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 49,530 psi | 90% | 2651 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,308 psi | 77% | 2690 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 86% | 46,557 psi | 84% | 2680 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 66% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 47,152 psi | 86% | 2602 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 47,732 psi | 87% | 2592 fps | 98.3% |
| IMR 4831 | <<locked>> | 90% | 49,008 psi | 89% | 2661 fps | 99.9% |
| Lovex S065 | <<locked>> | 86% | 47,892 psi | 87% | 2595 fps | 99.3% |
| Lovex S070 | <<locked>> | 88% | 48,776 psi | 89% | 2628 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,990 psi | 80% | 2575 fps | 98.6% |
| Norma 204 | <<locked>> | 88% | 47,021 psi | 85% | 2638 fps | 96.7% |
| Norma MRP | <<locked>> | 96% | 48,718 psi | 88% | 2766 fps | 98.7% |
| Norma URP | <<locked>> | 88% | 47,398 psi | 86% | 2648 fps | 99.8% |
| Ramshot Grand | <<locked>> | 98% | 48,080 psi | 87% | 2730 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 90% | 49,327 psi | 90% | 2700 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,876 psi | 83% | 2667 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 67% | 1713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 49,690 psi | 90% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 48,153 psi | 87% | 2684 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 46,601 psi | 85% | 2700 fps | 99.7% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,177 psi | 77% | 2684 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 84% | 49,777 psi | 90% | 2631 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,877 psi | 87% | 2621 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 94% | 47,979 psi | 87% | 2677 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 86% | 49,182 psi | 89% | 2615 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 47,892 psi | 87% | 2595 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 88% | 48,776 psi | 89% | 2628 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 47,892 psi | 87% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 48,037 psi | 87% | 2487 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 47,253 psi | 86% | 2543 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,543 psi | 86% | 2671 fps | 97.2% |
| Somchem S355 | <<locked>> | 84% | 49,734 psi | 90% | 2625 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 49,647 psi | 90% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 48,486 psi | 88% | 2654 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 84% | 47,819 psi | 87% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 49,371 psi | 90% | 2648 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 98% | 47,805 psi | 87% | 2631 fps | 97.6% |
| Vihtavuori N550 | <<locked>> | 88% | 48,472 psi | 88% | 2648 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 96% | 48,921 psi | 89% | 2710 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 48,704 psi | 88% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 47,500 psi | 86% | 2661 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,918 psi | 82% | 2795 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,327 psi | 88% | 2648 fps | 97.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 32,938 psi | 60% | 2349 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 36,796 psi | 67% | 2448 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 45,571 psi | 83% | 2546 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 40,799 psi | 74% | 2536 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,977 psi | 83% | 2569 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,027 psi | 65% | 2461 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,582 psi | 74% | 2575 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,321 psi | 73% | 2530 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,248 psi | 73% | 2572 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,281 psi | 48% | 2224 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,604 psi | 57% | 2388 fps | 95.2% |
| Alliant Reloder-26 | 43.2 gr | 82% | 29,950 psi | 54% | 2385 fps | 95.4% |
| Bofors RP15 | <<locked>> | 96% | 42,424 psi | 77% | 2615 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 46,340 psi | 84% | 2582 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,248 psi | 73% | 2572 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,017 psi | 74% | 2464 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 46,659 psi | 85% | 2592 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 38,667 psi | 70% | 2490 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 41,655 psi | 76% | 2510 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,460 psi | 61% | 2356 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,885 psi | 72% | 2631 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 37,507 psi | 68% | 2497 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 49% | 1493 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 36,651 psi | 67% | 2395 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,264 psi | 77% | 2490 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 35,302 psi | 64% | 2402 fps | 98% |
| Lovex S065 | <<locked>> | 80% | 39,769 psi | 72% | 2444 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,189 psi | 69% | 2428 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 32,053 psi | 58% | 2329 fps | 95.1% |
| Norma 204 | <<locked>> | 84% | 41,133 psi | 75% | 2526 fps | 95% |
| Norma MRP | 45 gr | 88% | 37,072 psi | 67% | 2533 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 36,724 psi | 67% | 2444 fps | 98.2% |
| Ramshot Grand | <<locked>> | 96% | 44,860 psi | 81% | 2667 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 35,549 psi | 65% | 2431 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 39,639 psi | 72% | 2546 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 50% | 1532 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,105 psi | 78% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,535 psi | 66% | 2464 fps | 98% |
| ReloadSwiss RS 70 | 41.7 gr | 80% | 35,360 psi | 64% | 2464 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,753 psi | 67% | 2552 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 43,830 psi | 80% | 2536 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,121 psi | 82% | 2572 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 41,887 psi | 76% | 2566 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,017 psi | 74% | 2464 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,769 psi | 72% | 2444 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 80% | 38,189 psi | 69% | 2428 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,846 psi | 81% | 2585 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,208 psi | 82% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,073 psi | 71% | 2392 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,495 psi | 75% | 2559 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 43,947 psi | 80% | 2530 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 33,141 psi | 60% | 2405 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 37,536 psi | 68% | 2448 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 42,134 psi | 76% | 2467 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,043 psi | 69% | 2444 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 39,392 psi | 71% | 2477 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 37,376 psi | 68% | 2441 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 28,805 psi | 52% | 2297 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,173 psi | 67% | 2415 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 38,667 psi | 70% | 2490 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,801 psi | 45% | 2251 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,134 psi | 76% | 2536 fps | 95.5% |
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 62 powders for 6.5 x 55 Swedish loaded with the .263 | 139gr | Prvi Partizan SP BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,805 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,805 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.263" calls for a 1:10.5 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. Alliant Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for 6.5 x 55 Swedish with the .263 | 139gr | Prvi Partizan SP BT 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.