Load Specifications
Load data in caliber .357 Mag. with .357 | 125gr | Nosler HP bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, ADI AP 100 and SNPE Vectan BA7 1/2.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 38,232 psi | 88% | 1486 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 36,390 psi | 84% | 1614 fps | 91.4% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,593 psi | 84% | 1362 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 36,114 psi | 83% | 1417 fps | 100% |
| ADI AP 100 | <<locked>> | 96% | 35,781 psi | 82% | 1549 fps | 98.4% |
| ADI AP 70N² | <<locked>> | 68% | 37,739 psi | 87% | 1453 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 38,101 psi | 88% | 1263 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 37,072 psi | 85% | 1289 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 35,839 psi | 82% | 1319 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 35,882 psi | 82% | 1368 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 37,753 psi | 87% | 1421 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 38,203 psi | 88% | 1631 fps | 91.1% |
| Alliant BULLSEYE² | <<locked>> | 72% | 37,884 psi | 87% | 1519 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,798 psi | 89% | 1407 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 37,550 psi | 86% | 1512 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 36,535 psi | 84% | 1611 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 80% | 37,449 psi | 86% | 1362 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 38,508 psi | 89% | 1529 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,535 psi | 84% | 1506 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 36,201 psi | 83% | 1362 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 37,202 psi | 86% | 1385 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 36,724 psi | 84% | 1385 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 38,885 psi | 89% | 1306 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 34,345 psi | 79% | 1506 fps | 99.7% |
| Hodgdon Longshot² | <<locked>> | 64% | 38,159 psi | 88% | 1555 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,202 psi | 40% | 1030 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 38,624 psi | 89% | 1463 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 36,390 psi | 84% | 1614 fps | 91.4% |
| Lovex S011² | <<locked>> | 68% | 38,885 psi | 89% | 1417 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 35,723 psi | 82% | 1447 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,434 psi | 84% | 1414 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 37,173 psi | 85% | 1424 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 37,623 psi | 86% | 1404 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 36,956 psi | 85% | 1375 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,796 psi | 85% | 1319 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 38,653 psi | 89% | 1532 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,491 psi | 82% | 1388 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,722 psi | 36% | 1033 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 39,001 psi | 90% | 1526 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 38,464 psi | 88% | 1634 fps | 94.6% |
| Rottweil P 801² | <<locked>> | 64% | 35,723 psi | 82% | 1355 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 38,043 psi | 87% | 1640 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,390 psi | 84% | 1614 fps | 91.4% |
| SNPE Vectan A0 | <<locked>> | 84% | 37,434 psi | 86% | 1467 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 38,261 psi | 88% | 1424 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 37,304 psi | 86% | 1434 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,956 psi | 87% | 1299 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 36,216 psi | 83% | 1512 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 35,810 psi | 82% | 1421 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,681 psi | 87% | 1634 fps | 99.3% |
| Somchem MP200² | <<locked>> | 76% | 38,406 psi | 88% | 1519 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 37,942 psi | 87% | 1490 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 34,983 psi | 80% | 1555 fps | 95.9% |
| Vihtavuori 3N37 | <<locked>> | 80% | 35,186 psi | 81% | 1522 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 96% | 39,305 psi | 90% | 1631 fps | 95.5% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 35,433 psi | 81% | 1634 fps | 97.6% |
| Vihtavuori N320² | <<locked>> | 76% | 38,638 psi | 89% | 1398 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 36,941 psi | 85% | 1296 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,362 psi | 86% | 1447 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 37,391 psi | 86% | 1483 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 35,955 psi | 83% | 1529 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 36,680 psi | 84% | 1414 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 39,334 psi | 90% | 1473 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 23,453 psi | 54% | 1260 fps | 99.8% |
| Accurate No. 7*² | <<locked>> | 68% | 27,238 psi | 63% | 1450 fps | 86.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,787 psi | 57% | 1194 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,827 psi | 48% | 1181 fps | 100% |
| ADI AP 100*² | 7.7 gr | 64% | 15,650 psi | 36% | 1122 fps | 86.1% |
| ADI AP 70N² | <<locked>> | 60% | 29,907 psi | 69% | 1348 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,803 psi | 62% | 1119 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,164 psi | 58% | 1125 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,627 psi | 57% | 1161 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,426 psi | 61% | 1234 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,669 psi | 50% | 1191 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 88% | 27,847 psi | 64% | 1450 fps | 85.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,934 psi | 62% | 1348 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 24,033 psi | 55% | 1198 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,287 psi | 35% | 1096 fps | 98.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,320 psi | 47% | 1283 fps | 89.8% |
| Alliant RED DOT² | <<locked>> | 60% | 23,656 psi | 54% | 1161 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,530 psi | 70% | 1414 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 21,074 psi | 48% | 1243 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,250 psi | 53% | 1178 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,968 psi | 34% | 1030 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,643 psi | 59% | 1240 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,379 psi | 49% | 1063 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,863 psi | 69% | 1434 fps | 99% |
| Hodgdon Longshot² | <<locked>> | 60% | 33,156 psi | 76% | 1483 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,760 psi | 18% | 761 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 25,063 psi | 58% | 1270 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 27,238 psi | 63% | 1450 fps | 86.3% |
| Lovex S011² | <<locked>> | 60% | 31,154 psi | 72% | 1322 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 24,337 psi | 56% | 1276 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,972 psi | 46% | 1158 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,190 psi | 49% | 1191 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,611 psi | 52% | 1188 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,439 psi | 56% | 1198 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,485 psi | 63% | 1198 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 30,008 psi | 69% | 1411 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,427 psi | 65% | 1293 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,382 psi | 17% | 761 fps | 99.1% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,551 psi | 45% | 1220 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 23,453 psi | 54% | 1355 fps | 86.2% |
| Rottweil P 801² | <<locked>> | 60% | 31,749 psi | 73% | 1306 fps | 100% |
| Rottweil P 806*² | 10.4 gr | 60% | 14,315 psi | 33% | 1161 fps | 89.8% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 27,238 psi | 63% | 1450 fps | 86.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,885 psi | 46% | 1181 fps | 99.9% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,424 psi | 56% | 1227 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,583 psi | 54% | 1234 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,123 psi | 65% | 1171 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.6 gr | 60% | 16,621 psi | 38% | 1132 fps | 93.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,177 psi | 53% | 1230 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 21,814 psi | 50% | 1339 fps | 93.2% |
| Somchem MP200² | <<locked>> | 60% | 24,482 psi | 56% | 1306 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 22,060 psi | 51% | 1234 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 26,760 psi | 62% | 1407 fps | 92.1% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,058 psi | 44% | 1224 fps | 96.2% |
| Vihtavuori 3N38*² | <<locked>> | 76% | 22,234 psi | 51% | 1325 fps | 86.3% |
| Vihtavuori N105* | <<locked>> | 80% | 19,392 psi | 45% | 1312 fps | 88% |
| Vihtavuori N320² | <<locked>> | 60% | 25,121 psi | 58% | 1220 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 15,055 psi | 35% | 965 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,438 psi | 54% | 1250 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 21,132 psi | 49% | 1224 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 17,637 psi | 41% | 1184 fps | 95.6% |
| Winchester 231² | <<locked>> | 60% | 32,692 psi | 75% | 1362 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,378 psi | 47% | 1184 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 63 powders for .357 Mag. loaded with the .357 | 125gr | Nosler HP. Rottweil P 806 delivers the highest muzzle velocity at 1,640 fps; across all powders the maximum-charge window runs from 1,030 fps to 1,640 fps. Alliant BLUE DOT gives the best case fill at 100 %, and 29 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 36–90 %, leaving at least 10 % headroom. Alliant BLUE DOT, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Rottweil P 806, ADI AP 100, SNPE Vectan BA7 1/2 rank at the top here: for .357 Mag. with the .357 | 125gr | Nosler HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, Alliant BLUE DOT, Lovex D037.1 burn incompletely and react more sensitively to barrel length and temperature. ADI AP 100, ADI APS 350, Alliant Herco stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.