Load Specifications
Load data in caliber .357 Maximum with .358 | 148gr | LEE Mold 358-148-WC 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.
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Max Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 84% | 36,970 psi | 82% | 1709 fps | 90.1% |
| Accurate No. 2² | <<locked>> | 64% | 36,434 psi | 81% | 1496 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,985 psi | 82% | 1693 fps | 98.7% |
| Accurate No. 9² | <<locked>> | 72% | 37,057 psi | 82% | 1696 fps | 95.3% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,318 psi | 83% | 1394 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,740 psi | 86% | 1470 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 37,188 psi | 83% | 1693 fps | 96.4% |
| ADI AP 100 | <<locked>> | 84% | 37,753 psi | 84% | 1631 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,277 psi | 90% | 1332 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,494 psi | 88% | 1355 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,668 psi | 88% | 1394 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 40,045 psi | 89% | 1447 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 35,694 psi | 79% | 1699 fps | 92.4% |
| Alliant BE-86² | <<locked>> | 72% | 39,943 psi | 89% | 1470 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,536 psi | 83% | 1696 fps | 98.2% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,306 psi | 90% | 1572 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 36,956 psi | 82% | 1411 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,421 psi | 85% | 1545 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,014 psi | 82% | 1667 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 37,753 psi | 84% | 1755 fps | 87.9% |
| Alliant RED DOT² | <<locked>> | 72% | 38,783 psi | 86% | 1404 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,827 psi | 89% | 1568 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,492 psi | 83% | 1401 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,364 psi | 90% | 1437 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,478 psi | 83% | 1414 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,175 psi | 87% | 1348 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 38,305 psi | 85% | 1818 fps | 94.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,480 psi | 48% | 1125 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 40,669 psi | 90% | 1509 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,985 psi | 82% | 1693 fps | 98.7% |
| Lovex D037.2² | <<locked>> | 72% | 38,087 psi | 85% | 1713 fps | 95.7% |
| Lovex S020² | <<locked>> | 64% | 38,087 psi | 85% | 1496 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,653 psi | 88% | 1476 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 39,987 psi | 89% | 1473 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,639 psi | 88% | 1450 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,710 psi | 84% | 1407 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 36,883 psi | 82% | 1348 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 35,346 psi | 79% | 1699 fps | 93.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,059 psi | 45% | 1142 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,697 psi | 88% | 1549 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,392 psi | 88% | 1713 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 72% | 35,940 psi | 80% | 1634 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,087 psi | 85% | 1713 fps | 95.7% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,985 psi | 82% | 1693 fps | 98.7% |
| SNPE Vectan A0² | <<locked>> | 72% | 36,593 psi | 81% | 1483 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,624 psi | 88% | 1463 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,102 psi | 87% | 1480 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,118 psi | 89% | 1362 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,210 psi | 63% | 1562 fps | 92.1% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 36,985 psi | 82% | 1562 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,493 psi | 86% | 1476 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,305 psi | 85% | 1673 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,173 psi | 83% | 1529 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,466 psi | 90% | 1542 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 40,059 psi | 89% | 1614 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 40,176 psi | 89% | 1709 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 36,825 psi | 82% | 1690 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 36,042 psi | 80% | 1726 fps | 93.3% |
| Vihtavuori N320² | <<locked>> | 64% | 37,376 psi | 83% | 1404 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,175 psi | 87% | 1345 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,579 psi | 84% | 1463 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,840 psi | 82% | 1496 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,421 psi | 88% | 1598 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,334 psi | 85% | 1483 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* | <<locked>> | 80% | 31,879 psi | 71% | 1621 fps | 87.5% |
| Accurate No. 2² | <<locked>> | 60% | 31,821 psi | 71% | 1434 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,618 psi | 70% | 1604 fps | 97.3% |
| Accurate No. 9*² | <<locked>> | 60% | 23,627 psi | 53% | 1437 fps | 87.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,618 psi | 68% | 1306 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,934 psi | 62% | 1322 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 23,975 psi | 53% | 1444 fps | 89.6% |
| ADI AP 100² | <<locked>> | 60% | 19,087 psi | 42% | 1276 fps | 97.5% |
| ADI APS 350² | <<locked>> | 60% | 30,690 psi | 68% | 1207 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,965 psi | 67% | 1227 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,689 psi | 66% | 1263 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,489 psi | 72% | 1348 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 27,441 psi | 61% | 1542 fps | 87.8% |
| Alliant BE-86² | <<locked>> | 60% | 28,514 psi | 63% | 1319 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 17,811 psi | 40% | 1280 fps | 87% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,766 psi | 80% | 1509 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,356 psi | 68% | 1319 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,305 psi | 45% | 1250 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,747 psi | 64% | 1526 fps | 99.9% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 32,605 psi | 73% | 1670 fps | 85.1% |
| Alliant RED DOT² | <<locked>> | 60% | 28,718 psi | 64% | 1266 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,369 psi | 63% | 1404 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,211 psi | 67% | 1306 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 9 gr | 60% | 19,696 psi | 44% | 1145 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,562 psi | 75% | 1365 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,063 psi | 56% | 1152 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 24,047 psi | 53% | 1539 fps | 85.7% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 9,442 psi | 21% | 846 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,721 psi | 73% | 1407 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,618 psi | 70% | 1604 fps | 97.3% |
| Lovex D037.2*² | <<locked>> | 60% | 24,308 psi | 54% | 1453 fps | 88.5% |
| Lovex S020² | <<locked>> | 60% | 33,620 psi | 75% | 1440 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,092 psi | 58% | 1289 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,587 psi | 64% | 1322 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,877 psi | 64% | 1309 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,951 psi | 69% | 1316 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,054 psi | 74% | 1299 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 22,785 psi | 51% | 1447 fps | 85.4% |
| ReloadSwiss RS 14² | 5.3 gr | 60% | 8,731 psi | 19% | 850 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,601 psi | 61% | 1378 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,397 psi | 59% | 1486 fps | 96.7% |
| Rottweil P 806² | <<locked>> | 60% | 23,279 psi | 52% | 1421 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,308 psi | 54% | 1453 fps | 88.5% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,618 psi | 70% | 1604 fps | 97.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,078 psi | 58% | 1325 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,343 psi | 70% | 1358 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,748 psi | 68% | 1371 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,402 psi | 74% | 1276 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,030 psi | 45% | 1371 fps | 85.3% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,105 psi | 51% | 1335 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,414 psi | 68% | 1368 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,272 psi | 74% | 1598 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,663 psi | 73% | 1467 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,022 psi | 65% | 1385 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,354 psi | 61% | 1430 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,608 psi | 41% | 1293 fps | 92.5% |
| Vihtavuori N105*² | <<locked>> | 60% | 15,708 psi | 35% | 1257 fps | 93.6% |
| Vihtavuori N110* | <<locked>> | 88% | 24,540 psi | 55% | 1506 fps | 86.4% |
| Vihtavuori N320² | <<locked>> | 60% | 33,460 psi | 74% | 1355 fps | 100% |
| Vihtavuori N32C Tin Star² | 7 gr | 60% | 16,476 psi | 37% | 1010 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,185 psi | 74% | 1407 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,790 psi | 64% | 1385 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,757 psi | 53% | 1358 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,166 psi | 60% | 1329 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 | 148gr | LEE Mold 358-148-WC. Hodgdon LilGun delivers the highest muzzle velocity at 1,818 fps; across all powders the maximum-charge window runs from 1,125 fps to 1,818 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 45–90 %, 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 | 148gr | LEE Mold 358-148-WC 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. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.