Load Specifications
Load data in caliber 6.5 x 57 with .264 | 155gr | Lapua Mega bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 49,284 psi | 87% | 2536 fps | 99.8% |
| Accurate 4350 | <<locked>> | 84% | 47,935 psi | 85% | 2523 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 50,299 psi | 89% | 2664 fps | 98% |
| Accurate MAGPRO | <<locked>> | 94% | 51,039 psi | 90% | 2664 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 90% | 48,733 psi | 86% | 2569 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 94% | 49,472 psi | 87% | 2612 fps | 97.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,222 psi | 78% | 2513 fps | 96.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,059 psi | 69% | 2477 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 48,849 psi | 86% | 2566 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 48,979 psi | 87% | 2579 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 49,414 psi | 87% | 2589 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 48,327 psi | 85% | 2559 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 49,037 psi | 87% | 2612 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 50,140 psi | 89% | 2602 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,313 psi | 87% | 2648 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 49,501 psi | 88% | 2671 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 48,341 psi | 85% | 2598 fps | 98.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,295 psi | 80% | 2582 fps | 97.3% |
| Bofors RP5 | <<locked>> | 94% | 49,037 psi | 87% | 2612 fps | 98.7% |
| Bofors RP7 | <<locked>> | 84% | 51,140 psi | 90% | 2523 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,805 psi | 86% | 2598 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 49,719 psi | 88% | 2569 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 82% | 49,298 psi | 87% | 2530 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 92% | 49,603 psi | 88% | 2559 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,617 psi | 86% | 2546 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 48,994 psi | 87% | 2507 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,138 psi | 85% | 2694 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 84% | 49,197 psi | 87% | 2598 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 65% | 1601 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 48,936 psi | 87% | 2510 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 49,559 psi | 88% | 2500 fps | 99.4% |
| IMR 4831 | <<locked>> | 86% | 48,486 psi | 86% | 2520 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,370 psi | 86% | 2507 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 96% | 50,923 psi | 90% | 2651 fps | 97.9% |
| Lovex S065 | <<locked>> | 84% | 49,980 psi | 88% | 2500 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 51,010 psi | 90% | 2539 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,299 psi | 89% | 2552 fps | 99.9% |
| Norma 204 | <<locked>> | 86% | 49,327 psi | 87% | 2552 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 48,515 psi | 86% | 2631 fps | 99.5% |
| Norma URP | <<locked>> | 86% | 50,024 psi | 88% | 2556 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 50,879 psi | 90% | 2661 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 86% | 48,791 psi | 86% | 2559 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 98% | 48,936 psi | 87% | 2602 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,724 psi | 67% | 1644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,097 psi | 90% | 2595 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 49,153 psi | 87% | 2615 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,312 psi | 85% | 2694 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 90% | 50,314 psi | 89% | 2543 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 92% | 50,966 psi | 90% | 2598 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 84% | 51,140 psi | 90% | 2523 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 49,980 psi | 88% | 2500 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 51,010 psi | 90% | 2539 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 49,081 psi | 87% | 2457 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 50,531 psi | 89% | 2595 fps | 98.8% |
| Somchem S361 | <<locked>> | 88% | 48,138 psi | 85% | 2484 fps | 96.5% |
| Somchem S365 | <<locked>> | 88% | 49,850 psi | 88% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 48,196 psi | 85% | 2526 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 49,676 psi | 88% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 48,660 psi | 86% | 2507 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 50,604 psi | 89% | 2552 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 86% | 50,879 psi | 90% | 2556 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 49,197 psi | 87% | 2575 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 48,675 psi | 86% | 2625 fps | 97% |
| Vihtavuori N565 | <<locked>> | 98% | 48,182 psi | 85% | 2605 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,010 psi | 90% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 49,719 psi | 88% | 2569 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 49,617 psi | 88% | 2717 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,039 psi | 90% | 2569 fps | 98.7% |
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>> | 80% | 31,024 psi | 55% | 2188 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 41,930 psi | 74% | 2421 fps | 99.8% |
| Accurate High Country | <<locked>> | 86% | 41,046 psi | 73% | 2497 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 90% | 44,498 psi | 79% | 2552 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 82% | 37,391 psi | 66% | 2352 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 88% | 40,712 psi | 72% | 2448 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 41,423 psi | 73% | 2457 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 32,474 psi | 57% | 2313 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,826 psi | 67% | 2359 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,248 psi | 71% | 2428 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,905 psi | 81% | 2533 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,463 psi | 66% | 2352 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,855 psi | 67% | 2402 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,849 psi | 53% | 2218 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,559 psi | 52% | 2228 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,024 psi | 57% | 2329 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 37,362 psi | 66% | 2392 fps | 95.5% |
| Bofors RP30 | <<locked>> | 96% | 39,479 psi | 70% | 2470 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 37,855 psi | 67% | 2402 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 45,121 psi | 80% | 2425 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 94% | 39,827 psi | 70% | 2428 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 43,482 psi | 77% | 2464 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,325 psi | 82% | 2477 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 43,555 psi | 77% | 2457 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,699 psi | 75% | 2441 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,797 psi | 67% | 2323 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,114 psi | 62% | 2408 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,337 psi | 75% | 2480 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 49% | 1427 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,625 psi | 72% | 2362 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,601 psi | 82% | 2451 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 39,987 psi | 71% | 2375 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,496 psi | 75% | 2402 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 41,640 psi | 74% | 2480 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,150 psi | 78% | 2405 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,322 psi | 75% | 2395 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 30,429 psi | 54% | 2175 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 40,408 psi | 71% | 2392 fps | 96.3% |
| Norma MRP | 42.2 gr | 80% | 32,111 psi | 57% | 2297 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,220 psi | 73% | 2408 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 41,321 psi | 73% | 2487 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,059 psi | 71% | 2405 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 34,301 psi | 61% | 2320 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 50% | 1463 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,568 psi | 73% | 2441 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,943 psi | 71% | 2451 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,156 psi | 60% | 2388 fps | 96% |
| Rottweil R 904 | <<locked>> | 84% | 41,568 psi | 73% | 2388 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 36,463 psi | 64% | 2333 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,121 psi | 80% | 2425 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,150 psi | 78% | 2405 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,322 psi | 75% | 2395 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,004 psi | 76% | 2356 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,129 psi | 64% | 2329 fps | 95.3% |
| Somchem S361 | <<locked>> | 86% | 45,020 psi | 80% | 2431 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,855 psi | 67% | 2372 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,853 psi | 62% | 2274 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,644 psi | 82% | 2411 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,757 psi | 76% | 2408 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 34,360 psi | 61% | 2257 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 41,916 psi | 74% | 2408 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 33,359 psi | 59% | 2287 fps | 98.9% |
| Vihtavuori N560 | 46.4 gr | 88% | 42,554 psi | 75% | 2510 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 42,032 psi | 74% | 2493 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 73% | 2375 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,758 psi | 77% | 2467 fps | 98.8% |
| Winchester StaBALL HD | 41.8 gr | 80% | 26,397 psi | 47% | 2218 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,187 psi | 64% | 2303 fps | 95.1% |
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 68 powders for 6.5 x 57 loaded with the .264 | 155gr | Lapua Mega. Winchester StaBALL HD delivers the highest muzzle velocity at 2,717 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,717 fps. ADI AR 2217 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 65–90 %, 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 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for 6.5 x 57 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.