Load Specifications
Load data in caliber .357 Auto Mag. with .358 | 105gr | LEE Mold 358-105-SWC bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, 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: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 64% | 30,211 psi | 82% | 1690 fps | 100% |
| Accurate No. 7*² | <<locked>> | 68% | 33,141 psi | 90% | 1890 fps | 91.6% |
| Accurate Solo 1000² | <<locked>> | 68% | 32,982 psi | 89% | 1617 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 32,619 psi | 88% | 1680 fps | 100% |
| ADI AP 100 | <<locked>> | 84% | 30,516 psi | 83% | 1785 fps | 97.8% |
| ADI APS 350² | <<locked>> | 64% | 31,024 psi | 84% | 1460 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 32,909 psi | 89% | 1529 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 31,981 psi | 86% | 1568 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 31,589 psi | 85% | 1614 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 30,443 psi | 82% | 1624 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 88% | 32,996 psi | 89% | 1877 fps | 90.4% |
| Alliant Green Dot² | <<locked>> | 68% | 32,242 psi | 87% | 1627 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 31,691 psi | 86% | 1739 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 29,907 psi | 81% | 1818 fps | 96.9% |
| Alliant RED DOT² | <<locked>> | 68% | 31,009 psi | 84% | 1572 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 32,750 psi | 89% | 1772 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 32,242 psi | 87% | 1611 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 31,241 psi | 84% | 1601 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 31,981 psi | 86% | 1617 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 32,430 psi | 88% | 1686 fps | 100% |
| Hodgdon Clays² | <<locked>> | 64% | 31,618 psi | 85% | 1483 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,956 psi | 49% | 1286 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 30,560 psi | 83% | 1663 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 33,141 psi | 90% | 1890 fps | 91.6% |
| Lovex S020² | <<locked>> | 64% | 31,256 psi | 85% | 1696 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 30,298 psi | 82% | 1634 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 33,214 psi | 90% | 1680 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 30,908 psi | 84% | 1617 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 32,953 psi | 89% | 1627 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 32,503 psi | 88% | 1558 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 16,375 psi | 44% | 1293 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 31,923 psi | 86% | 1742 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 31,111 psi | 84% | 1834 fps | 92.8% |
| Rottweil P 806² | <<locked>> | 76% | 31,053 psi | 84% | 1841 fps | 99.9% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 33,141 psi | 90% | 1890 fps | 91.6% |
| SNPE Vectan A0² | <<locked>> | 72% | 30,937 psi | 84% | 1690 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 64% | 30,400 psi | 82% | 1617 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 32,996 psi | 89% | 1690 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 33,460 psi | 90% | 1535 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 29,994 psi | 81% | 1732 fps | 99.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 32,489 psi | 88% | 1686 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 29,356 psi | 79% | 1811 fps | 98% |
| Somchem MP200² | <<locked>> | 64% | 30,516 psi | 83% | 1722 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 30,705 psi | 83% | 1696 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 32,445 psi | 88% | 1798 fps | 100% |
| Vihtavuori 3N38* | <<locked>> | 84% | 31,227 psi | 84% | 1827 fps | 93.7% |
| Vihtavuori N105 | <<locked>> | 88% | 30,850 psi | 83% | 1873 fps | 96.9% |
| Vihtavuori N320² | <<locked>> | 64% | 32,082 psi | 87% | 1617 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 31,270 psi | 85% | 1512 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 31,575 psi | 85% | 1673 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 30,734 psi | 83% | 1699 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 31,444 psi | 85% | 1778 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 32,126 psi | 87% | 1686 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 26,455 psi | 72% | 1617 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 23,743 psi | 64% | 1667 fps | 85.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 26,614 psi | 72% | 1503 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 23,090 psi | 62% | 1503 fps | 100% |
| ADI AP 100*² | <<locked>> | 60% | 15,171 psi | 41% | 1355 fps | 86.6% |
| ADI APS 350² | <<locked>> | 60% | 28,224 psi | 76% | 1411 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 27,122 psi | 73% | 1427 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 26,063 psi | 70% | 1460 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 28,384 psi | 77% | 1555 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 23,786 psi | 64% | 1499 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 80% | 26,339 psi | 71% | 1722 fps | 86.1% |
| Alliant Green Dot² | <<locked>> | 60% | 26,034 psi | 70% | 1516 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 16,621 psi | 45% | 1385 fps | 99.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 22,989 psi | 62% | 1640 fps | 93% |
| Alliant RED DOT² | <<locked>> | 60% | 25,077 psi | 68% | 1463 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 23,380 psi | 63% | 1578 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 25,512 psi | 69% | 1493 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 16,085 psi | 43% | 1293 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 28,224 psi | 76% | 1555 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 25,875 psi | 70% | 1565 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 28,747 psi | 78% | 1437 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,556 psi | 20% | 945 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 27,093 psi | 73% | 1598 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 23,743 psi | 64% | 1667 fps | 85.1% |
| Lovex S020² | <<locked>> | 60% | 27,572 psi | 75% | 1631 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 21,582 psi | 58% | 1460 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 23,641 psi | 64% | 1509 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 24,874 psi | 67% | 1506 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 26,556 psi | 72% | 1516 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 29,109 psi | 79% | 1503 fps | 100% |
| ReloadSwiss RS 14² | 5.5 gr | 60% | 6,875 psi | 19% | 928 fps | 98.6% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 22,133 psi | 60% | 1545 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 23,728 psi | 64% | 1654 fps | 87.8% |
| Rottweil P 806*² | <<locked>> | 60% | 16,766 psi | 45% | 1473 fps | 93% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 23,743 psi | 64% | 1667 fps | 85.1% |
| SNPE Vectan A0² | <<locked>> | 60% | 21,785 psi | 59% | 1496 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 27,224 psi | 74% | 1562 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 26,426 psi | 71% | 1568 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 30,226 psi | 82% | 1483 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 18,594 psi | 50% | 1450 fps | 95.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 25,701 psi | 69% | 1562 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 25,469 psi | 69% | 1719 fps | 96.3% |
| Somchem MP200² | <<locked>> | 60% | 26,832 psi | 73% | 1647 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 24,265 psi | 66% | 1565 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 21,901 psi | 59% | 1568 fps | 98.4% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 21,321 psi | 58% | 1581 fps | 86.9% |
| Vihtavuori N105*² | 15.1 gr | 72% | 17,637 psi | 48% | 1526 fps | 87% |
| Vihtavuori N320² | <<locked>> | 60% | 28,152 psi | 76% | 1552 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.3 gr | 60% | 13,518 psi | 37% | 1148 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 27,369 psi | 74% | 1601 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 23,656 psi | 64% | 1558 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 18,710 psi | 51% | 1476 fps | 97% |
| Winchester AutoComp ² | <<locked>> | 60% | 22,452 psi | 61% | 1499 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 8 powders for .357 Auto Mag. loaded with the .358 | 105gr | LEE Mold 358-105-SWC. Vihtavuori N105 delivers the highest muzzle velocity at 1,873 fps; across all powders the maximum-charge window runs from 1,286 fps to 1,873 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 8 of the 8 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 44–86 %, leaving at least 14 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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 N105, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Auto Mag. with the .358 | 105gr | LEE Mold 358-105-SWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Vihtavuori 3N38 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.