Load Specifications
Load data in caliber 7 x 57 R with .287 | 175gr | Woodleigh PP SN bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-16.
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 3100ᴾ | <<locked>> | 100% | 44,498 psi | 90% | 2425 fps | 98.1% |
| Accurate 4350 | <<locked>> | 90% | 43,888 psi | 89% | 2425 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 43,265 psi | 88% | 2336 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 43,221 psi | 88% | 2359 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,888 psi | 87% | 2434 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,830 psi | 87% | 2454 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,989 psi | 85% | 2444 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,086 psi | 75% | 2359 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 43,990 psi | 89% | 2546 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 43,004 psi | 87% | 2365 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 43,729 psi | 89% | 2346 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 43,888 psi | 89% | 2372 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,671 psi | 89% | 2425 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,279 psi | 86% | 2375 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 42,975 psi | 87% | 2438 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 73% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 43,918 psi | 89% | 2372 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,569 psi | 86% | 2326 fps | 96.5% |
| IMR 4831 | <<locked>> | 90% | 41,959 psi | 85% | 2379 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 42,163 psi | 86% | 2323 fps | 97.8% |
| Lovex S070 | <<locked>> | 88% | 42,757 psi | 87% | 2352 fps | 96.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,956 psi | 75% | 2290 fps | 96.2% |
| Norma MRP | <<locked>> | 98% | 43,888 psi | 89% | 2507 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 43,801 psi | 89% | 2421 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 42,438 psi | 86% | 2411 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 74% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 44,092 psi | 89% | 2359 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,598 psi | 86% | 2454 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 43,700 psi | 89% | 2448 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 43,018 psi | 87% | 2461 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 84% | 43,178 psi | 88% | 2362 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 43,729 psi | 89% | 2346 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,163 psi | 86% | 2323 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 88% | 42,757 psi | 87% | 2352 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 44,512 psi | 90% | 2415 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,685 psi | 87% | 2247 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,527 psi | 90% | 2326 fps | 97.1% |
| Somchem S355 | <<locked>> | 84% | 43,845 psi | 89% | 2362 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 41,785 psi | 85% | 2425 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 44,512 psi | 90% | 2418 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 84% | 41,785 psi | 85% | 2303 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,801 psi | 87% | 2372 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 42,090 psi | 85% | 2375 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 43,714 psi | 89% | 2467 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 42,148 psi | 85% | 2349 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 43,671 psi | 89% | 2425 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,695 psi | 76% | 2470 fps | 100% |
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>> | 92% | 33,939 psi | 69% | 2228 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 31,285 psi | 63% | 2178 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 80% | 40,741 psi | 83% | 2293 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,669 psi | 82% | 2313 fps | 99.8% |
| Alliant Reloder-16 | 36.9 gr | 80% | 31,517 psi | 64% | 2188 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,954 psi | 71% | 2300 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,773 psi | 52% | 2067 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,998 psi | 71% | 2310 fps | 95.8% |
| Alliant Reloder-26 | 44.8 gr | 88% | 31,154 psi | 63% | 2264 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 40,379 psi | 82% | 2320 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 40,901 psi | 83% | 2293 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 41,031 psi | 83% | 2323 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 38,116 psi | 77% | 2320 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,892 psi | 59% | 2100 fps | 97% |
| Hodgdon Superformance | <<locked>> | 86% | 39,929 psi | 81% | 2379 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 54% | 1358 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 41,118 psi | 83% | 2320 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,579 psi | 76% | 2228 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 30,298 psi | 61% | 2139 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 35,288 psi | 72% | 2192 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 37,710 psi | 76% | 2257 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 34,679 psi | 70% | 2244 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 38,363 psi | 78% | 2398 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 31,633 psi | 64% | 2182 fps | 96% |
| Ramshot Hunter | <<locked>> | 84% | 35,041 psi | 71% | 2264 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 55% | 1388 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,292 psi | 84% | 2310 fps | 96.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,202 psi | 75% | 2352 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,922 psi | 63% | 2192 fps | 95.5% |
| ReloadSwiss RS 70 | 41.4 gr | 82% | 33,069 psi | 67% | 2247 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 38,087 psi | 77% | 2270 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 40,901 psi | 83% | 2293 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,288 psi | 72% | 2192 fps | 95.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,710 psi | 76% | 2257 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,856 psi | 79% | 2316 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,118 psi | 81% | 2205 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,175 psi | 79% | 2231 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 38,812 psi | 79% | 2274 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 28,355 psi | 57% | 2142 fps | 98.2% |
| Somchem S385 | <<locked>> | 94% | 41,553 psi | 84% | 2365 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 36,927 psi | 75% | 2218 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 32,938 psi | 67% | 2182 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 32,372 psi | 66% | 2182 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 27,717 psi | 56% | 2133 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,532 psi | 66% | 2162 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 38,377 psi | 78% | 2326 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,686 psi | 52% | 2129 fps | 95.3% |
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 71 powders for 7 x 57 R loaded with the .287 | 175gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,546 fps. Accurate 3100 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.287" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-26, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 7 x 57 R with the .287 | 175gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2209, ADI AR 2213 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.