Load Specifications
Load data in caliber 7 x 57 with .284 | 156gr | Lapua Naturalis bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-17.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 48,515 psi | 86% | 2520 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,256 psi | 89% | 2549 fps | 96% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,539 psi | 73% | 2507 fps | 95.9% |
| Accurate 4064 | <<locked>> | 86% | 48,762 psi | 86% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 50,198 psi | 89% | 2671 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 82% | 48,269 psi | 85% | 2575 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 88% | 49,284 psi | 87% | 2579 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 50,285 psi | 89% | 2575 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 50,241 psi | 89% | 2723 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 49,153 psi | 87% | 2602 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 86% | 49,835 psi | 88% | 2621 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 48,399 psi | 86% | 2671 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 49,124 psi | 87% | 2707 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,537 psi | 70% | 2533 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,150 psi | 78% | 2684 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 50,865 psi | 90% | 2638 fps | 99.3% |
| Bofors RP3 | <<locked>> | 88% | 49,705 psi | 88% | 2618 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 49,835 psi | 88% | 2582 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 49,545 psi | 88% | 2608 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 50,285 psi | 89% | 2621 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 94% | 49,690 psi | 88% | 2667 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 48,718 psi | 86% | 2585 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,068 psi | 90% | 2657 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,894 psi | 90% | 2664 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 49,792 psi | 88% | 2690 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 63% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 49,806 psi | 88% | 2589 fps | 99.9% |
| IMR 3031 | <<locked>> | 82% | 48,573 psi | 86% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 48,979 psi | 87% | 2566 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 84% | 48,718 psi | 86% | 2536 fps | 96.5% |
| IMR 4350 | <<locked>> | 96% | 49,719 psi | 88% | 2605 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 48,631 psi | 86% | 2562 fps | 96.4% |
| IMR 4831 | <<locked>> | 98% | 50,879 psi | 90% | 2667 fps | 99.3% |
| IMR 4895 | <<locked>> | 86% | 51,010 psi | 90% | 2648 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 50,285 psi | 89% | 2575 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 51,039 psi | 90% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 51,053 psi | 90% | 2559 fps | 99.8% |
| Lovex S062 | <<locked>> | 86% | 48,791 psi | 86% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 51,024 psi | 90% | 2608 fps | 98.3% |
| Lovex S070 | <<locked>> | 94% | 48,776 psi | 86% | 2592 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 50,546 psi | 89% | 2579 fps | 100% |
| Norma 202 | <<locked>> | 84% | 50,662 psi | 90% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,124 psi | 87% | 2608 fps | 99.7% |
| Norma URP | <<locked>> | 96% | 49,269 psi | 87% | 2657 fps | 99% |
| Ramshot Big Game | <<locked>> | 86% | 48,660 psi | 86% | 2621 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 96% | 48,167 psi | 85% | 2651 fps | 97.5% |
| Ramshot TAC | <<locked>> | 82% | 50,386 psi | 89% | 2589 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 49,893 psi | 88% | 2608 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,187 psi | 64% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,618 psi | 89% | 2605 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 49,458 psi | 87% | 2671 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 48,965 psi | 87% | 2710 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 49,487 psi | 87% | 2687 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 49,298 psi | 87% | 2707 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 84% | 48,356 psi | 85% | 2536 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 49,574 psi | 88% | 2608 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 92% | 49,835 psi | 88% | 2582 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 51,024 psi | 90% | 2608 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 51,039 psi | 90% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 48,791 psi | 86% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 48,776 psi | 86% | 2592 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 50,734 psi | 90% | 2661 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 48,965 psi | 87% | 2569 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 49,734 psi | 88% | 2598 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 48,776 psi | 86% | 2477 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 48,718 psi | 86% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,111 psi | 90% | 2562 fps | 97% |
| Somchem S335 | <<locked>> | 82% | 48,515 psi | 86% | 2480 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 48,385 psi | 86% | 2562 fps | 99.5% |
| Somchem S355 | <<locked>> | 90% | 49,879 psi | 88% | 2605 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,531 psi | 89% | 2713 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 49,008 psi | 87% | 2467 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 50,560 psi | 89% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 51,126 psi | 90% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 47,892 psi | 85% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 48,646 psi | 86% | 2608 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 82% | 50,807 psi | 90% | 2579 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 49,617 psi | 88% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,778 psi | 90% | 2661 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,178 psi | 76% | 2605 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 48,559 psi | 86% | 2589 fps | 99.9% |
| Winchester 748 | <<locked>> | 82% | 50,488 psi | 89% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 49,690 psi | 88% | 2667 fps | 96.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,578 psi | 63% | 2533 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 49,487 psi | 87% | 2605 fps | 99.9% |
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 2495 | <<locked>> | 80% | 43,091 psi | 76% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,181 psi | 83% | 2497 fps | 95.2% |
| Accurate 3100 | <<locked>> | 98% | 38,812 psi | 69% | 2454 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 40,727 psi | 72% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,866 psi | 60% | 2365 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 45,614 psi | 81% | 2530 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 38,899 psi | 69% | 2388 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,514 psi | 84% | 2533 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,350 psi | 73% | 2559 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,711 psi | 68% | 2415 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,394 psi | 73% | 2470 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,113 psi | 60% | 2372 fps | 95.4% |
| Alliant Reloder-17 | 40.2 gr | 80% | 33,460 psi | 59% | 2385 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,559 psi | 52% | 2283 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,143 psi | 64% | 2507 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,527 psi | 79% | 2530 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 38,435 psi | 68% | 2418 fps | 98.9% |
| Bofors RP7 | <<locked>> | 90% | 47,050 psi | 83% | 2533 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,499 psi | 82% | 2559 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,088 psi | 69% | 2418 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 90% | 43,613 psi | 77% | 2559 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 46,006 psi | 81% | 2539 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,631 psi | 52% | 2234 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,858 psi | 74% | 2513 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 92% | 46,354 psi | 82% | 2628 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 47% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,063 psi | 78% | 2493 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 45,672 psi | 81% | 2533 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,828 psi | 72% | 2421 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,236 psi | 76% | 2438 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 46,688 psi | 83% | 2552 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,192 psi | 76% | 2467 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 32,750 psi | 58% | 2323 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 42,366 psi | 75% | 2500 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 47,514 psi | 84% | 2533 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 45,063 psi | 80% | 2516 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,295 psi | 80% | 2464 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 40,799 psi | 72% | 2425 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,043 psi | 67% | 2372 fps | 95.2% |
| Lovex S070 | <<locked>> | 90% | 43,265 psi | 76% | 2493 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,020 psi | 80% | 2487 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,092 psi | 80% | 2493 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,799 psi | 72% | 2461 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 34,156 psi | 60% | 2365 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,118 psi | 71% | 2470 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 40,132 psi | 71% | 2500 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,355 psi | 84% | 2539 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,862 psi | 83% | 2559 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 48% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,930 psi | 74% | 2451 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,207 psi | 76% | 2566 fps | 98.6% |
| ReloadSwiss RS 60 | 40.2 gr | 80% | 35,505 psi | 63% | 2448 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,636 psi | 63% | 2428 fps | 95.6% |
| ReloadSwiss RS 70 | 44.9 gr | 88% | 38,218 psi | 68% | 2487 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 42,801 psi | 76% | 2441 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,376 psi | 64% | 2369 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 47,050 psi | 83% | 2533 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,043 psi | 67% | 2372 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,063 psi | 80% | 2516 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,799 psi | 72% | 2425 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 43,265 psi | 76% | 2493 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,753 psi | 65% | 2408 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,992 psi | 81% | 2520 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,874 psi | 78% | 2497 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,977 psi | 81% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,406 psi | 68% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,150 psi | 80% | 2467 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 45,818 psi | 81% | 2441 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,411 psi | 80% | 2513 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 37,130 psi | 66% | 2375 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 27,224 psi | 48% | 2221 fps | 96% |
| Vihtavuori N133 | <<locked>> | 80% | 46,209 psi | 82% | 2428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,192 psi | 75% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,670 psi | 75% | 2431 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,230 psi | 62% | 2313 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 35,491 psi | 63% | 2362 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 47,601 psi | 84% | 2530 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,060 psi | 73% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,070 psi | 62% | 2369 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 31,691 psi | 56% | 2359 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,183 psi | 55% | 2241 fps | 96.3% |
| Winchester 748 | <<locked>> | 80% | 47,311 psi | 84% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,613 psi | 77% | 2559 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,791 psi | 53% | 2359 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,497 psi | 77% | 2503 fps | 99.4% |
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 102 powders for 7 x 57 loaded with the .284 | 156gr | Lapua Naturalis. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,723 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,723 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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. ReloadSwiss RS 70, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 156gr | Lapua Naturalis they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.