Load Specifications
Load data in caliber .357 Maximum with .357 | 158gr | Fiocchi SJSP bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 84% | 40,640 psi | 90% | 1677 fps | 92.1% |
| Accurate No. 2² | <<locked>> | 64% | 38,261 psi | 85% | 1434 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 40,263 psi | 90% | 1650 fps | 99.4% |
| Accurate No. 9² | <<locked>> | 72% | 40,306 psi | 90% | 1657 fps | 96.7% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,754 psi | 86% | 1332 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 36,738 psi | 82% | 1362 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 40,118 psi | 89% | 1647 fps | 97.5% |
| ADI AP 100 | <<locked>> | 84% | 39,914 psi | 89% | 1568 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 38,000 psi | 85% | 1230 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 40,495 psi | 90% | 1293 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 38,087 psi | 85% | 1293 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 38,334 psi | 85% | 1339 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 39,305 psi | 87% | 1667 fps | 94.3% |
| Alliant BE-86² | <<locked>> | 68% | 38,087 psi | 85% | 1362 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 40,437 psi | 90% | 1650 fps | 99.1% |
| Alliant Green Dot² | <<locked>> | 68% | 39,175 psi | 87% | 1352 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 37,695 psi | 84% | 1447 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 39,537 psi | 88% | 1611 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 36,782 psi | 82% | 1657 fps | 87.9% |
| Alliant RED DOT² | <<locked>> | 72% | 40,625 psi | 90% | 1342 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 38,479 psi | 86% | 1460 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 39,204 psi | 87% | 1335 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 39,320 psi | 87% | 1345 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 39,972 psi | 89% | 1358 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 36,927 psi | 82% | 1371 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 40,393 psi | 90% | 1286 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 38,058 psi | 85% | 1677 fps | 87.6% |
| Hodgdon LilGun* | <<locked>> | 88% | 36,651 psi | 82% | 1706 fps | 94.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 24,149 psi | 54% | 1089 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 38,885 psi | 86% | 1398 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 40,263 psi | 90% | 1650 fps | 99.4% |
| Lovex D037.2² | <<locked>> | 68% | 36,245 psi | 81% | 1594 fps | 95.4% |
| Maxam CSB 1² | <<locked>> | 72% | 38,029 psi | 85% | 1371 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 39,059 psi | 87% | 1371 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 37,971 psi | 84% | 1348 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 39,566 psi | 88% | 1348 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 38,174 psi | 85% | 1283 fps | 100% |
| Ramshot Enforcer | <<locked>> | 80% | 39,291 psi | 87% | 1673 fps | 95.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 22,945 psi | 51% | 1106 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 37,536 psi | 83% | 1430 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 68% | 37,594 psi | 84% | 1598 fps | 99.8% |
| ReloadSwiss RS 30*ᴾ | <<locked>> | 100% | 32,967 psi | 73% | 1608 fps | 88.1% |
| Rottweil P 806² | <<locked>> | 68% | 35,940 psi | 80% | 1539 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 68% | 36,245 psi | 81% | 1594 fps | 95.4% |
| Shooters World Major Pistol² | <<locked>> | 64% | 40,263 psi | 90% | 1650 fps | 99.4% |
| SNPE Vectan A0² | <<locked>> | 72% | 38,218 psi | 85% | 1417 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 64% | 36,898 psi | 82% | 1348 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 40,625 psi | 90% | 1414 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 37,840 psi | 84% | 1260 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 31,459 psi | 70% | 1539 fps | 94.4% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 38,972 psi | 87% | 1499 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 40,118 psi | 89% | 1407 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 39,537 psi | 88% | 1467 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 38,609 psi | 86% | 1430 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 38,101 psi | 85% | 1499 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 38,754 psi | 86% | 1598 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 40,669 psi | 90% | 1647 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 39,697 psi | 88% | 1693 fps | 95.1% |
| Vihtavuori N320² | <<locked>> | 64% | 39,711 psi | 88% | 1345 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 38,870 psi | 86% | 1260 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 40,074 psi | 89% | 1404 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 39,537 psi | 88% | 1440 fps | 100% |
| Vihtavuori N350² | <<locked>> | 72% | 36,999 psi | 82% | 1480 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 40,495 psi | 90% | 1421 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100*² | <<locked>> | 72% | 27,311 psi | 61% | 1447 fps | 85.1% |
| Accurate No. 2² | <<locked>> | 60% | 33,402 psi | 74% | 1371 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 34,548 psi | 77% | 1565 fps | 98.4% |
| Accurate No. 9*² | <<locked>> | 60% | 26,774 psi | 60% | 1427 fps | 90.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 32,256 psi | 72% | 1250 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 29,936 psi | 67% | 1270 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 26,934 psi | 60% | 1424 fps | 92.2% |
| ADI AP 100² | <<locked>> | 60% | 21,393 psi | 48% | 1253 fps | 98.9% |
| ADI APS 350² | <<locked>> | 60% | 31,981 psi | 71% | 1155 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,966 psi | 69% | 1171 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 31,546 psi | 70% | 1207 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 34,998 psi | 78% | 1296 fps | 100% |
| Alliant 2400*² | <<locked>> | 64% | 24,091 psi | 54% | 1381 fps | 86% |
| Alliant BE-86² | <<locked>> | 60% | 30,792 psi | 68% | 1270 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 20,885 psi | 46% | 1280 fps | 90.8% |
| Alliant Green Dot² | <<locked>> | 60% | 32,111 psi | 71% | 1260 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 23,134 psi | 51% | 1220 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 31,241 psi | 69% | 1483 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 80% | 32,329 psi | 72% | 1581 fps | 85.6% |
| Alliant RED DOT² | <<locked>> | 60% | 31,241 psi | 69% | 1220 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 31,285 psi | 70% | 1362 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 32,097 psi | 71% | 1250 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 22,481 psi | 50% | 1115 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 35,752 psi | 80% | 1312 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 33,489 psi | 74% | 1329 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 26,498 psi | 59% | 1102 fps | 100% |
| Hodgdon H110* | <<locked>> | 80% | 33,431 psi | 74% | 1601 fps | 85.2% |
| Hodgdon LilGun*² | <<locked>> | 76% | 24,163 psi | 54% | 1467 fps | 86.7% |
| Hodgdon TrailBoss² | 4.8 gr | 60% | 11,966 psi | 27% | 833 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 35,056 psi | 78% | 1348 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 34,548 psi | 77% | 1565 fps | 98.4% |
| Lovex D037.2*² | <<locked>> | 60% | 27,166 psi | 60% | 1434 fps | 91.1% |
| Maxam CSB 1² | <<locked>> | 60% | 28,108 psi | 63% | 1237 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 32,213 psi | 72% | 1283 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 31,125 psi | 69% | 1257 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 32,372 psi | 72% | 1257 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,766 psi | 77% | 1240 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 23,148 psi | 51% | 1375 fps | 86.5% |
| ReloadSwiss RS 14² | 4.9 gr | 60% | 11,589 psi | 26% | 846 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 29,878 psi | 66% | 1329 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 29,182 psi | 65% | 1457 fps | 98.2% |
| ReloadSwiss RS 30* | <<locked>> | 96% | 29,399 psi | 65% | 1535 fps | 85.5% |
| Rottweil P 806² | <<locked>> | 60% | 27,746 psi | 62% | 1414 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 27,166 psi | 60% | 1434 fps | 91.1% |
| Shooters World Major Pistol² | <<locked>> | 60% | 34,548 psi | 77% | 1565 fps | 98.4% |
| SNPE Vectan A0² | <<locked>> | 60% | 28,123 psi | 63% | 1276 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 33,504 psi | 75% | 1306 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 32,895 psi | 73% | 1319 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 34,635 psi | 77% | 1220 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 20,697 psi | 46% | 1309 fps | 86.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 25,164 psi | 56% | 1293 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 32,764 psi | 73% | 1316 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 35,259 psi | 78% | 1414 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 31,459 psi | 70% | 1335 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 29,965 psi | 67% | 1385 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 21,669 psi | 48% | 1289 fps | 95.5% |
| Vihtavuori N105² | <<locked>> | 60% | 19,160 psi | 43% | 1273 fps | 97.2% |
| Vihtavuori N110* | <<locked>> | 80% | 22,104 psi | 49% | 1368 fps | 85.1% |
| Vihtavuori N320² | <<locked>> | 60% | 35,534 psi | 79% | 1296 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.5 gr | 60% | 19,261 psi | 43% | 981 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 36,042 psi | 80% | 1358 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 31,502 psi | 70% | 1339 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 26,411 psi | 59% | 1322 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 29,704 psi | 66% | 1280 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 64 powders for .357 Maximum loaded with the .357 | 158gr | Fiocchi SJSP. Hodgdon LilGun delivers the highest muzzle velocity at 1,706 fps; across all powders the maximum-charge window runs from 1,089 fps to 1,706 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 19 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, ReloadSwiss RS 30 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. Vihtavuori N32C Tin Star, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .357 Maximum with the .357 | 158gr | Fiocchi SJSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Alliant Power Pro 300-MP burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, Hodgdon Clays, Hodgdon TrailBoss 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.