Load Specifications
Load data in caliber .357 Maximum with .357 | 160gr | Speer JSP SWC 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% | 38,812 psi | 86% | 1654 fps | 91.7% |
| Accurate No. 2² | <<locked>> | 64% | 37,376 psi | 83% | 1424 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 38,856 psi | 86% | 1634 fps | 99.4% |
| Accurate No. 9² | <<locked>> | 72% | 38,928 psi | 87% | 1640 fps | 96.6% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,145 psi | 85% | 1325 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,827 psi | 89% | 1398 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 38,812 psi | 86% | 1634 fps | 97.4% |
| ADI AP 100 | <<locked>> | 84% | 39,189 psi | 87% | 1558 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 37,652 psi | 84% | 1227 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 40,074 psi | 89% | 1286 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 37,260 psi | 83% | 1286 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,376 psi | 83% | 1329 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 37,666 psi | 84% | 1647 fps | 94% |
| Alliant BE-86² | <<locked>> | 68% | 37,463 psi | 83% | 1358 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 39,189 psi | 87% | 1634 fps | 99% |
| Alliant Green Dot² | <<locked>> | 68% | 38,232 psi | 85% | 1342 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,639 psi | 88% | 1473 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 38,218 psi | 85% | 1594 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 40,132 psi | 89% | 1709 fps | 89.8% |
| Alliant RED DOT² | <<locked>> | 72% | 39,755 psi | 88% | 1335 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 37,101 psi | 83% | 1444 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,972 psi | 87% | 1335 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 38,043 psi | 85% | 1332 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 39,189 psi | 87% | 1352 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,871 psi | 89% | 1280 fps | 100% |
| Hodgdon LilGun | <<locked>> | 92% | 40,118 psi | 89% | 1762 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,960 psi | 51% | 1079 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 38,189 psi | 85% | 1391 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 38,856 psi | 86% | 1634 fps | 99.4% |
| Lovex D037.2² | <<locked>> | 72% | 40,016 psi | 89% | 1657 fps | 96.9% |
| Lovex S020² | <<locked>> | 64% | 39,610 psi | 88% | 1427 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 37,028 psi | 82% | 1362 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 37,608 psi | 84% | 1358 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 37,072 psi | 82% | 1339 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,783 psi | 86% | 1339 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,463 psi | 83% | 1276 fps | 100% |
| Ramshot Enforcer | <<locked>> | 80% | 37,463 psi | 83% | 1650 fps | 95% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,480 psi | 48% | 1093 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 36,318 psi | 81% | 1421 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 68% | 36,027 psi | 80% | 1575 fps | 99.7% |
| ReloadSwiss RS 30*ᴾ | <<locked>> | 100% | 31,459 psi | 70% | 1585 fps | 87.6% |
| Rottweil P 806² | <<locked>> | 72% | 38,769 psi | 86% | 1578 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 40,016 psi | 89% | 1657 fps | 96.9% |
| Shooters World Major Pistol² | <<locked>> | 64% | 38,856 psi | 86% | 1634 fps | 99.4% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,884 psi | 84% | 1414 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 40,263 psi | 90% | 1388 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,798 psi | 89% | 1404 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 37,420 psi | 83% | 1257 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 29,950 psi | 67% | 1516 fps | 94% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 38,232 psi | 85% | 1490 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 39,755 psi | 88% | 1407 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 40,248 psi | 90% | 1608 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 38,261 psi | 85% | 1453 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 38,159 psi | 85% | 1427 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 37,202 psi | 83% | 1490 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 37,028 psi | 82% | 1575 fps | 99.9% |
| Vihtavuori N105 | <<locked>> | 84% | 39,204 psi | 87% | 1627 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 38,479 psi | 86% | 1680 fps | 95% |
| Vihtavuori N320² | <<locked>> | 64% | 38,696 psi | 86% | 1335 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 37,623 psi | 84% | 1250 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,885 psi | 86% | 1394 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 38,377 psi | 85% | 1430 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 40,669 psi | 90% | 1526 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 39,769 psi | 88% | 1414 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>> | 76% | 29,472 psi | 66% | 1499 fps | 87% |
| Accurate No. 2² | <<locked>> | 60% | 32,503 psi | 72% | 1362 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 33,098 psi | 74% | 1545 fps | 98.2% |
| Accurate No. 9*² | <<locked>> | 60% | 25,338 psi | 56% | 1401 fps | 90.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,662 psi | 70% | 1243 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,950 psi | 64% | 1260 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 25,570 psi | 57% | 1401 fps | 91.7% |
| ADI AP 100² | <<locked>> | 60% | 20,189 psi | 45% | 1234 fps | 98.5% |
| ADI APS 350² | <<locked>> | 60% | 31,633 psi | 70% | 1152 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,560 psi | 68% | 1165 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,763 psi | 68% | 1201 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 34,098 psi | 76% | 1289 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 25,686 psi | 57% | 1427 fps | 87.5% |
| Alliant BE-86² | <<locked>> | 60% | 30,153 psi | 67% | 1263 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 19,276 psi | 43% | 1247 fps | 89.6% |
| Alliant Green Dot² | <<locked>> | 60% | 31,183 psi | 69% | 1250 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,799 psi | 48% | 1204 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,950 psi | 67% | 1467 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 34,592 psi | 77% | 1624 fps | 87.2% |
| Alliant RED DOT² | <<locked>> | 60% | 30,371 psi | 68% | 1214 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 29,994 psi | 67% | 1345 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 31,154 psi | 69% | 1240 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 20,842 psi | 46% | 1093 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,505 psi | 77% | 1299 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 26,049 psi | 58% | 1096 fps | 100% |
| Hodgdon LilGun*² | <<locked>> | 76% | 22,249 psi | 49% | 1424 fps | 85.2% |
| Hodgdon TrailBoss² | 4.9 gr | 60% | 10,791 psi | 24% | 820 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,765 psi | 75% | 1335 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 33,098 psi | 74% | 1545 fps | 98.2% |
| Lovex D037.2*² | <<locked>> | 60% | 25,701 psi | 57% | 1411 fps | 90.5% |
| Lovex S020² | <<locked>> | 60% | 34,882 psi | 78% | 1371 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 27,122 psi | 60% | 1227 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 30,734 psi | 68% | 1270 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 30,226 psi | 67% | 1250 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,604 psi | 70% | 1247 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,098 psi | 76% | 1234 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 21,321 psi | 47% | 1342 fps | 85.3% |
| ReloadSwiss RS 14² | 4.9 gr | 60% | 10,008 psi | 22% | 820 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 29,225 psi | 65% | 1325 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 27,717 psi | 62% | 1434 fps | 97.8% |
| ReloadSwiss RS 30* | <<locked>> | 96% | 28,239 psi | 63% | 1519 fps | 85.1% |
| Rottweil P 806² | <<locked>> | 60% | 25,527 psi | 57% | 1385 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 25,701 psi | 57% | 1411 fps | 90.5% |
| Shooters World Major Pistol² | <<locked>> | 60% | 33,098 psi | 74% | 1545 fps | 98.2% |
| SNPE Vectan A0² | <<locked>> | 60% | 27,195 psi | 60% | 1266 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,648 psi | 73% | 1296 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 32,082 psi | 71% | 1309 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 34,243 psi | 76% | 1214 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 19,174 psi | 43% | 1280 fps | 85.6% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 24,381 psi | 54% | 1283 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,734 psi | 71% | 1306 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 34,882 psi | 78% | 1535 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 34,055 psi | 76% | 1401 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 30,400 psi | 68% | 1325 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 29,051 psi | 65% | 1375 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 20,044 psi | 45% | 1260 fps | 94.6% |
| Vihtavuori N105² | <<locked>> | 60% | 17,651 psi | 39% | 1243 fps | 96.4% |
| Vihtavuori N110* | <<locked>> | 84% | 23,438 psi | 52% | 1407 fps | 86.6% |
| Vihtavuori N320² | <<locked>> | 60% | 34,519 psi | 77% | 1286 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.6 gr | 60% | 17,999 psi | 40% | 971 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,838 psi | 77% | 1345 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 30,356 psi | 68% | 1325 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 25,077 psi | 56% | 1306 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 28,398 psi | 63% | 1266 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 | 160gr | Speer JSP SWC. Hodgdon LilGun delivers the highest muzzle velocity at 1,762 fps; across all powders the maximum-charge window runs from 1,079 fps to 1,762 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 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 48–90 %, 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 | 160gr | Speer JSP SWC 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.