Load Specifications
Load data in caliber .357 Maximum with .358 | 158gr | Rim Rock SWC?WN bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star and ReloadSwiss RS 14.
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.
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: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 84% | 36,448 psi | 81% | 1614 fps | 90% |
| Accurate No. 2² | <<locked>> | 68% | 40,669 psi | 90% | 1460 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,840 psi | 82% | 1604 fps | 98.8% |
| Accurate No. 9² | <<locked>> | 72% | 37,246 psi | 83% | 1614 fps | 95.5% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,449 psi | 83% | 1316 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,537 psi | 86% | 1381 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 37,072 psi | 82% | 1604 fps | 96.4% |
| ADI AP 100 | <<locked>> | 84% | 38,014 psi | 85% | 1542 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,538 psi | 90% | 1257 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,595 psi | 88% | 1276 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,045 psi | 89% | 1316 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 36,608 psi | 81% | 1319 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 40,321 psi | 90% | 1686 fps | 94.4% |
| Alliant BE-86² | <<locked>> | 72% | 40,393 psi | 90% | 1388 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,231 psi | 83% | 1604 fps | 98.3% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,813 psi | 89% | 1476 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 37,478 psi | 83% | 1332 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,870 psi | 86% | 1463 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,724 psi | 82% | 1575 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 37,333 psi | 83% | 1667 fps | 87.9% |
| Alliant RED DOT² | <<locked>> | 72% | 38,943 psi | 87% | 1322 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,798 psi | 89% | 1480 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,637 psi | 84% | 1319 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,495 psi | 90% | 1358 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,695 psi | 84% | 1335 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,450 psi | 88% | 1273 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 37,463 psi | 83% | 1722 fps | 94.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,220 psi | 49% | 1066 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 36,869 psi | 82% | 1378 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,840 psi | 82% | 1604 fps | 98.8% |
| Lovex D037.2² | <<locked>> | 72% | 38,363 psi | 85% | 1631 fps | 95.9% |
| Lovex S020² | <<locked>> | 64% | 38,305 psi | 85% | 1414 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,827 psi | 89% | 1391 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 40,321 psi | 90% | 1391 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,842 psi | 89% | 1368 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,058 psi | 85% | 1329 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,347 psi | 83% | 1273 fps | 100% |
| Ramshot Enforcer | <<locked>> | 84% | 40,321 psi | 90% | 1690 fps | 95.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,147 psi | 47% | 1086 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,059 psi | 87% | 1453 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,450 psi | 88% | 1624 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 72% | 36,811 psi | 82% | 1558 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,363 psi | 85% | 1631 fps | 95.9% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,840 psi | 82% | 1604 fps | 98.8% |
| SNPE Vectan A0² | <<locked>> | 76% | 40,103 psi | 89% | 1437 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,421 psi | 88% | 1378 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,856 psi | 86% | 1394 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,263 psi | 90% | 1283 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,282 psi | 63% | 1483 fps | 92.4% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 40,625 psi | 90% | 1519 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,595 psi | 86% | 1391 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,014 psi | 85% | 1581 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,217 psi | 83% | 1444 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 36,999 psi | 82% | 1411 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 40,161 psi | 89% | 1526 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,479 psi | 88% | 1608 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 36,564 psi | 81% | 1598 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,766 psi | 80% | 1637 fps | 93.4% |
| Vihtavuori N320² | <<locked>> | 64% | 37,898 psi | 84% | 1325 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,204 psi | 87% | 1266 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,218 psi | 85% | 1385 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 37,231 psi | 83% | 1417 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,175 psi | 87% | 1509 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,363 psi | 85% | 1398 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% | 28,079 psi | 62% | 1470 fps | 85.3% |
| Accurate No. 2² | <<locked>> | 60% | 31,734 psi | 71% | 1352 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,589 psi | 70% | 1519 fps | 97.4% |
| Accurate No. 9*² | <<locked>> | 60% | 24,105 psi | 54% | 1375 fps | 88.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,734 psi | 68% | 1230 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,079 psi | 62% | 1247 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,294 psi | 54% | 1375 fps | 90.1% |
| ADI AP 100² | <<locked>> | 60% | 19,624 psi | 44% | 1220 fps | 98% |
| ADI APS 350² | <<locked>> | 60% | 31,314 psi | 70% | 1142 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,356 psi | 68% | 1161 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,371 psi | 68% | 1194 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,199 psi | 74% | 1276 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 24,410 psi | 54% | 1398 fps | 85.8% |
| Alliant BE-86² | <<locked>> | 60% | 29,037 psi | 65% | 1250 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,579 psi | 41% | 1227 fps | 88.2% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,621 psi | 79% | 1424 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,893 psi | 69% | 1247 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,132 psi | 47% | 1194 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,906 psi | 64% | 1447 fps | 99.9% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 32,358 psi | 72% | 1585 fps | 85.2% |
| Alliant RED DOT² | <<locked>> | 60% | 29,254 psi | 65% | 1194 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,631 psi | 64% | 1325 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,313 psi | 67% | 1227 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.1 gr | 60% | 20,581 psi | 46% | 1089 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,402 psi | 74% | 1286 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,686 psi | 57% | 1089 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 24,076 psi | 54% | 1470 fps | 86.2% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,254 psi | 23% | 807 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,953 psi | 73% | 1325 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,589 psi | 70% | 1519 fps | 97.4% |
| Lovex D037.2*² | <<locked>> | 60% | 24,511 psi | 55% | 1385 fps | 89% |
| Lovex S020² | <<locked>> | 60% | 33,460 psi | 74% | 1355 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,266 psi | 58% | 1214 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,805 psi | 66% | 1260 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,341 psi | 65% | 1237 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,314 psi | 70% | 1243 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,823 psi | 75% | 1230 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,235 psi | 52% | 1385 fps | 86.3% |
| ReloadSwiss RS 14² | 4.7 gr | 60% | 9,761 psi | 22% | 817 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,862 psi | 62% | 1306 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,513 psi | 59% | 1411 fps | 97% |
| Rottweil P 806² | <<locked>> | 60% | 24,033 psi | 53% | 1362 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,511 psi | 55% | 1385 fps | 89% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,589 psi | 70% | 1519 fps | 97.4% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,513 psi | 59% | 1257 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,604 psi | 70% | 1283 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,966 psi | 69% | 1293 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,518 psi | 75% | 1204 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,305 psi | 45% | 1309 fps | 86% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,482 psi | 52% | 1266 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,009 psi | 69% | 1296 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,214 psi | 74% | 1512 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,909 psi | 73% | 1385 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,675 psi | 66% | 1312 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,543 psi | 61% | 1352 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,232 psi | 43% | 1237 fps | 93.5% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,346 psi | 36% | 1211 fps | 94.9% |
| Vihtavuori N110* | <<locked>> | 88% | 24,540 psi | 55% | 1434 fps | 86.8% |
| Vihtavuori N320² | <<locked>> | 60% | 33,605 psi | 75% | 1273 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.3 gr | 60% | 17,535 psi | 39% | 961 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,069 psi | 76% | 1335 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,617 psi | 66% | 1316 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,960 psi | 53% | 1286 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,847 psi | 62% | 1260 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 .358 | 158gr | Rim Rock SWC?WN. Hodgdon LilGun delivers the highest muzzle velocity at 1,722 fps; across all powders the maximum-charge window runs from 1,066 fps to 1,722 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 47–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 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. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Maximum with the .358 | 158gr | Rim Rock SWC?WN 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.