Load Specifications
Load data in caliber 6.5 x 55 Swedish with .264 | 155gr | Lapua Mega 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, Winchester StaBALL HD and Vihtavuori N560.
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>> | 94% | 47,659 psi | 86% | 2507 fps | 99.7% |
| Accurate 4350 | <<locked>> | 86% | 49,458 psi | 90% | 2539 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 47,108 psi | 85% | 2533 fps | 98% |
| ADI AR 2213 | <<locked>> | 94% | 48,037 psi | 87% | 2579 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,826 psi | 69% | 2441 fps | 97.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 47,195 psi | 86% | 2530 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 47,253 psi | 86% | 2543 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 47,645 psi | 86% | 2556 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 49,806 psi | 90% | 2572 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 47,456 psi | 86% | 2579 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 48,037 psi | 87% | 2566 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,384 psi | 86% | 2608 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 47,514 psi | 86% | 2638 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 49,690 psi | 90% | 2615 fps | 98.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,381 psi | 79% | 2543 fps | 96.8% |
| Bofors RP5 | <<locked>> | 94% | 47,456 psi | 86% | 2579 fps | 98.3% |
| Bofors RP7 | <<locked>> | 82% | 46,746 psi | 85% | 2444 fps | 98.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 43,990 psi | 80% | 2503 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 82% | 48,762 psi | 88% | 2546 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 84% | 46,804 psi | 85% | 2477 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 96% | 47,427 psi | 86% | 2516 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,123 psi | 86% | 2510 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 47,616 psi | 86% | 2480 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,615 psi | 85% | 2657 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 84% | 47,572 psi | 86% | 2566 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,825 psi | 67% | 1588 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 47,819 psi | 87% | 2484 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 48,283 psi | 88% | 2470 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 48,138 psi | 87% | 2507 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,847 psi | 85% | 2470 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 94% | 49,153 psi | 89% | 2612 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 48,385 psi | 88% | 2467 fps | 99.8% |
| Lovex S070 | <<locked>> | 86% | 49,487 psi | 90% | 2507 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,646 psi | 88% | 2520 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 47,921 psi | 87% | 2523 fps | 98.1% |
| Norma MRP | <<locked>> | 92% | 46,572 psi | 85% | 2595 fps | 99.2% |
| Norma URP | <<locked>> | 86% | 48,327 psi | 88% | 2523 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 48,486 psi | 88% | 2612 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 86% | 47,340 psi | 86% | 2530 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 96% | 48,849 psi | 89% | 2595 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 68% | 1627 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 49,240 psi | 89% | 2562 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 47,456 psi | 86% | 2582 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,485 psi | 84% | 2651 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 90% | 48,646 psi | 88% | 2507 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 92% | 49,226 psi | 89% | 2566 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 82% | 46,746 psi | 85% | 2444 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 48,385 psi | 88% | 2467 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 49,487 psi | 90% | 2507 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 47,659 psi | 86% | 2425 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 48,805 psi | 89% | 2559 fps | 98.5% |
| Somchem S361 | <<locked>> | 90% | 49,850 psi | 90% | 2503 fps | 96.8% |
| Somchem S365 | <<locked>> | 88% | 47,805 psi | 87% | 2530 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 49,719 psi | 90% | 2543 fps | 99.2% |
| Unknown powder | <<locked>> | 84% | 48,791 psi | 89% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 48,950 psi | 89% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 49,197 psi | 89% | 2503 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 47,210 psi | 86% | 2493 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 84% | 49,545 psi | 90% | 2543 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 47,282 psi | 86% | 2543 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 47,674 psi | 87% | 2598 fps | 96.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,385 psi | 90% | 2618 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 49,443 psi | 90% | 2490 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 48,762 psi | 88% | 2546 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 46,963 psi | 85% | 2680 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 47,239 psi | 86% | 2500 fps | 98.1% |
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>> | 80% | 29,849 psi | 54% | 2159 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 40,437 psi | 73% | 2392 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 84% | 38,798 psi | 70% | 2375 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 90% | 42,003 psi | 76% | 2467 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 33,330 psi | 60% | 2329 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,434 psi | 66% | 2323 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,102 psi | 71% | 2398 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,469 psi | 81% | 2507 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,100 psi | 66% | 2316 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,260 psi | 66% | 2365 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,718 psi | 52% | 2185 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,674 psi | 52% | 2198 fps | 95.4% |
| Alliant Reloder-26 | 41.8 gr | 80% | 30,777 psi | 56% | 2297 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 36,056 psi | 65% | 2359 fps | 95% |
| Bofors RP30 | <<locked>> | 96% | 37,884 psi | 69% | 2431 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 36,260 psi | 66% | 2365 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 44,063 psi | 80% | 2398 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 98% | 41,118 psi | 75% | 2448 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 45,687 psi | 83% | 2493 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 41,307 psi | 75% | 2379 fps | 97% |
| Hodgdon H4831 | <<locked>> | 94% | 44,672 psi | 81% | 2467 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,063 psi | 80% | 2457 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,622 psi | 66% | 2297 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,868 psi | 65% | 2421 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,988 psi | 74% | 2448 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 50% | 1417 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,610 psi | 72% | 2336 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,281 psi | 82% | 2418 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 35,085 psi | 64% | 2270 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,947 psi | 80% | 2421 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 42,975 psi | 78% | 2500 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 42,801 psi | 78% | 2375 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 41,278 psi | 75% | 2365 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 29,225 psi | 53% | 2142 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 38,914 psi | 71% | 2359 fps | 95.8% |
| Norma MRP | <<locked>> | 82% | 33,228 psi | 60% | 2323 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 40,059 psi | 73% | 2382 fps | 99.6% |
| Ramshot Grand | <<locked>> | 88% | 41,901 psi | 76% | 2490 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 38,580 psi | 70% | 2372 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,794 psi | 61% | 2303 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 51% | 1453 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,972 psi | 73% | 2405 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,595 psi | 70% | 2418 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,938 psi | 60% | 2349 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 84% | 40,176 psi | 73% | 2356 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 37,710 psi | 68% | 2356 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 44,063 psi | 80% | 2398 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,801 psi | 78% | 2375 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 41,278 psi | 75% | 2365 fps | 98.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,047 psi | 76% | 2329 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,391 psi | 68% | 2349 fps | 95.7% |
| Somchem S361 | <<locked>> | 86% | 43,671 psi | 79% | 2398 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,593 psi | 66% | 2346 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,678 psi | 61% | 2241 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 42,946 psi | 78% | 2431 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 40,872 psi | 74% | 2313 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,018 psi | 78% | 2405 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 34,214 psi | 62% | 2251 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 43,468 psi | 79% | 2444 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 31,981 psi | 58% | 2254 fps | 98.6% |
| Vihtavuori N560 | 44.7 gr | 90% | 41,742 psi | 76% | 2490 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 43,134 psi | 78% | 2510 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,132 psi | 73% | 2346 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,687 psi | 83% | 2493 fps | 99% |
| Winchester StaBALL HD | 40.1 gr | 80% | 25,353 psi | 46% | 2178 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,189 psi | 69% | 2339 fps | 95.8% |
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 66 powders for 6.5 x 55 Swedish loaded with the .264 | 155gr | Lapua Mega. Winchester StaBALL HD delivers the highest muzzle velocity at 2,680 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,680 fps. ADI AR 2225 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.264" calls for a 1:10.5 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. Alliant Reloder-26, Winchester StaBALL HD, Vihtavuori N560 rank at the top here: for 6.5 x 55 Swedish with the .264 | 155gr | Lapua Mega 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.