Load Specifications
Load data in caliber 7 x 57 R with .287 | 160gr | Woodleigh PP SN bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Somchem S365.
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.
A valid access license is required to use the Personalized Load Calculator.
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 3100ᴾ | <<locked>> | 100% | 41,916 psi | 85% | 2490 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 42,685 psi | 87% | 2444 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 44,527 psi | 90% | 2552 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 84% | 44,150 psi | 90% | 2464 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 44,614 psi | 90% | 2598 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 43,859 psi | 89% | 2487 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 44,222 psi | 90% | 2500 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 92% | 43,511 psi | 88% | 2559 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 43,555 psi | 88% | 2582 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,929 psi | 81% | 2516 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,570 psi | 90% | 2671 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 43,743 psi | 89% | 2493 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 41,887 psi | 85% | 2451 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 90% | 44,034 psi | 89% | 2543 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 42,772 psi | 87% | 2497 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 72% | 1598 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,468 psi | 88% | 2448 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,279 psi | 88% | 2448 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 42,569 psi | 86% | 2503 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 43,453 psi | 88% | 2448 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 42,960 psi | 87% | 2448 fps | 97.2% |
| Lovex S070 | <<locked>> | 90% | 43,395 psi | 88% | 2477 fps | 96.2% |
| Norma 203B | <<locked>> | 82% | 43,540 psi | 88% | 2487 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 44,614 psi | 90% | 2628 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 44,208 psi | 90% | 2546 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 82% | 43,250 psi | 88% | 2503 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 92% | 43,018 psi | 87% | 2533 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,114 psi | 73% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,119 psi | 85% | 2434 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 43,453 psi | 88% | 2585 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 44,034 psi | 89% | 2569 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,859 psi | 89% | 2585 fps | 98% |
| Rottweil R 903 | <<locked>> | 86% | 43,918 psi | 89% | 2490 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,960 psi | 87% | 2448 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 43,453 psi | 88% | 2448 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 43,395 psi | 88% | 2477 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,235 psi | 86% | 2493 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,700 psi | 89% | 2375 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 44,454 psi | 90% | 2490 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 42,264 psi | 86% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 42,612 psi | 86% | 2431 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 43,352 psi | 88% | 2493 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 44,034 psi | 89% | 2444 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 42,453 psi | 86% | 2493 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,830 psi | 89% | 2585 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,047 psi | 87% | 2474 fps | 99.7% |
| Winchester 760 | <<locked>> | 90% | 44,353 psi | 90% | 2549 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,607 psi | 72% | 2523 fps | 99.2% |
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>> | 98% | 39,059 psi | 79% | 2438 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 40,176 psi | 81% | 2402 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,517 psi | 64% | 2290 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 38,972 psi | 79% | 2369 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,785 psi | 85% | 2543 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,682 psi | 78% | 2392 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,394 psi | 84% | 2448 fps | 98.7% |
| Alliant Reloder-16 | 38.9 gr | 82% | 32,097 psi | 65% | 2303 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,286 psi | 68% | 2362 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,341 psi | 60% | 2264 fps | 95.8% |
| Alliant Reloder-26 | 48.1 gr | 92% | 33,721 psi | 68% | 2428 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 38,203 psi | 77% | 2392 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 80% | 39,189 psi | 79% | 2398 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 41,234 psi | 84% | 2490 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,615 psi | 56% | 2162 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 54% | 1424 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,944 psi | 83% | 2398 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,886 psi | 83% | 2402 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 32,750 psi | 66% | 2303 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 40,944 psi | 83% | 2405 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,665 psi | 72% | 2303 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 40,944 psi | 83% | 2428 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 40,770 psi | 83% | 2438 fps | 99% |
| Norma MRP | <<locked>> | 98% | 41,800 psi | 85% | 2572 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 32,039 psi | 65% | 2293 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,466 psi | 82% | 2454 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 37,840 psi | 77% | 2428 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 55% | 1463 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,537 psi | 80% | 2382 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,418 psi | 72% | 2425 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,417 psi | 68% | 2356 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,926 psi | 73% | 2415 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 36,100 psi | 73% | 2343 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,665 psi | 72% | 2303 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 40,944 psi | 83% | 2405 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 40,944 psi | 83% | 2428 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,014 psi | 75% | 2392 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,479 psi | 78% | 2290 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,956 psi | 75% | 2349 fps | 98.6% |
| Somchem S365 | 38.7 gr | 80% | 26,818 psi | 54% | 2195 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 80% | 35,114 psi | 71% | 2290 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 33,344 psi | 68% | 2293 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 41,278 psi | 84% | 2398 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,866 psi | 67% | 2297 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 29,704 psi | 60% | 2287 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,053 psi | 63% | 2221 fps | 96.9% |
| Winchester 760 | <<locked>> | 88% | 41,481 psi | 84% | 2497 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,644 psi | 56% | 2280 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 48 powders for 7 x 57 R loaded with the .287 | 160gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,671 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.287" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Alliant Reloder-16, Somchem S365 rank at the top here: for 7 x 57 R with the .287 | 160gr | Woodleigh PP SN 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.