Load Specifications
Load data in caliber .357 Maximum with .357 | 158gr | H&N SWC HS 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% | 36,303 psi | 81% | 1611 fps | 89.9% |
| Accurate No. 2² | <<locked>> | 64% | 36,274 psi | 81% | 1407 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,564 psi | 81% | 1598 fps | 98.7% |
| Accurate No. 9² | <<locked>> | 72% | 37,028 psi | 82% | 1611 fps | 95.4% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,695 psi | 84% | 1319 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,798 psi | 86% | 1385 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 36,840 psi | 82% | 1601 fps | 96.3% |
| ADI AP 100 | <<locked>> | 84% | 37,695 psi | 84% | 1539 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,059 psi | 89% | 1250 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,175 psi | 87% | 1270 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,277 psi | 90% | 1319 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 40,422 psi | 90% | 1362 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 40,118 psi | 89% | 1680 fps | 94.3% |
| Alliant BE-86² | <<locked>> | 72% | 40,001 psi | 89% | 1385 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,550 psi | 84% | 1611 fps | 98.3% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,074 psi | 89% | 1480 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 40,582 psi | 90% | 1368 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,580 psi | 86% | 1460 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,014 psi | 82% | 1575 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 37,173 psi | 83% | 1663 fps | 87.7% |
| Alliant RED DOT² | <<locked>> | 72% | 39,204 psi | 87% | 1325 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 40,089 psi | 89% | 1483 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,217 psi | 83% | 1312 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 36,956 psi | 82% | 1319 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,956 psi | 84% | 1339 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,044 psi | 87% | 1266 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 37,289 psi | 83% | 1719 fps | 94.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,350 psi | 50% | 1070 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 40,582 psi | 90% | 1417 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,564 psi | 81% | 1598 fps | 98.7% |
| Lovex D037.2² | <<locked>> | 72% | 38,145 psi | 85% | 1624 fps | 95.8% |
| Lovex S020² | <<locked>> | 64% | 37,869 psi | 84% | 1407 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,392 psi | 88% | 1385 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 40,625 psi | 90% | 1391 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,407 psi | 88% | 1365 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,608 psi | 84% | 1322 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 40,538 psi | 90% | 1309 fps | 100% |
| Ramshot Enforcer | <<locked>> | 84% | 40,147 psi | 89% | 1686 fps | 95.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,842 psi | 46% | 1079 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,349 psi | 88% | 1453 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,146 psi | 87% | 1621 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 72% | 36,550 psi | 81% | 1555 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,145 psi | 85% | 1624 fps | 95.8% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,564 psi | 81% | 1598 fps | 98.7% |
| SNPE Vectan A0² | <<locked>> | 76% | 40,379 psi | 90% | 1440 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,088 psi | 87% | 1375 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,493 psi | 86% | 1388 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,567 psi | 90% | 1286 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,137 psi | 63% | 1480 fps | 92.3% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 36,709 psi | 82% | 1470 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,203 psi | 85% | 1388 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,319 psi | 85% | 1585 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,854 psi | 82% | 1437 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,625 psi | 90% | 1453 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,813 psi | 89% | 1522 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,798 psi | 89% | 1611 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 36,883 psi | 82% | 1601 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,592 psi | 79% | 1634 fps | 93.2% |
| Vihtavuori N320² | <<locked>> | 64% | 37,405 psi | 83% | 1319 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,508 psi | 88% | 1266 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,768 psi | 84% | 1381 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,782 psi | 82% | 1411 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,856 psi | 86% | 1503 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,029 psi | 85% | 1394 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% | 27,905 psi | 62% | 1467 fps | 85.2% |
| Accurate No. 2² | <<locked>> | 60% | 31,966 psi | 71% | 1352 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,343 psi | 70% | 1516 fps | 97.3% |
| Accurate No. 9*² | <<locked>> | 60% | 23,902 psi | 53% | 1371 fps | 88.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,937 psi | 69% | 1230 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,253 psi | 63% | 1250 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,105 psi | 54% | 1368 fps | 90% |
| ADI AP 100² | <<locked>> | 60% | 19,363 psi | 43% | 1211 fps | 97.8% |
| ADI APS 350² | <<locked>> | 60% | 30,835 psi | 69% | 1135 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,950 psi | 67% | 1155 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,921 psi | 67% | 1188 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,431 psi | 74% | 1276 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 24,236 psi | 54% | 1394 fps | 85.7% |
| Alliant BE-86² | <<locked>> | 60% | 28,703 psi | 64% | 1243 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,376 psi | 41% | 1224 fps | 88% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,868 psi | 80% | 1424 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,443 psi | 68% | 1240 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,248 psi | 47% | 1194 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,587 psi | 64% | 1440 fps | 99.9% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 32,198 psi | 72% | 1581 fps | 85.1% |
| Alliant RED DOT² | <<locked>> | 60% | 29,457 psi | 66% | 1198 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,805 psi | 64% | 1329 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,530 psi | 68% | 1230 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8 gr | 60% | 20,262 psi | 45% | 1086 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,663 psi | 75% | 1289 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,280 psi | 56% | 1083 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 23,931 psi | 53% | 1467 fps | 86.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,298 psi | 23% | 807 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,185 psi | 74% | 1329 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,343 psi | 70% | 1516 fps | 97.3% |
| Lovex D037.2*² | <<locked>> | 60% | 24,308 psi | 54% | 1378 fps | 88.8% |
| Lovex S020² | <<locked>> | 60% | 33,721 psi | 75% | 1355 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,411 psi | 59% | 1214 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,399 psi | 65% | 1253 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,530 psi | 66% | 1237 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,864 psi | 69% | 1237 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,330 psi | 74% | 1220 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,032 psi | 51% | 1381 fps | 86.1% |
| ReloadSwiss RS 14² | 4.7 gr | 60% | 9,805 psi | 22% | 817 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,036 psi | 62% | 1306 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,237 psi | 58% | 1404 fps | 96.8% |
| Rottweil P 806² | <<locked>> | 60% | 24,207 psi | 54% | 1365 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,308 psi | 54% | 1378 fps | 88.8% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,343 psi | 70% | 1516 fps | 97.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,658 psi | 59% | 1257 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,821 psi | 71% | 1283 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,169 psi | 69% | 1296 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,112 psi | 74% | 1198 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,160 psi | 45% | 1302 fps | 85.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,192 psi | 52% | 1260 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,618 psi | 68% | 1289 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,446 psi | 74% | 1516 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,532 psi | 72% | 1381 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,312 psi | 65% | 1306 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,731 psi | 62% | 1355 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,985 psi | 42% | 1234 fps | 93.2% |
| Vihtavuori N105² | <<locked>> | 60% | 16,433 psi | 37% | 1214 fps | 95% |
| Vihtavuori N110* | <<locked>> | 88% | 24,352 psi | 54% | 1427 fps | 86.6% |
| Vihtavuori N320² | <<locked>> | 60% | 33,823 psi | 75% | 1276 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.2 gr | 60% | 17,216 psi | 38% | 955 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,634 psi | 75% | 1332 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,269 psi | 65% | 1309 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,134 psi | 54% | 1289 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,528 psi | 61% | 1253 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 | H&N SWC HS. Hodgdon LilGun delivers the highest muzzle velocity at 1,719 fps; across all powders the maximum-charge window runs from 1,070 fps to 1,719 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 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 46–90 %, 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 .357 | 158gr | H&N SWC HS 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.