Load Specifications
Load data in caliber .357 Mag. with .355 | 90gr | Lehigh Defense Xtreme Penetrator bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori 3N37 and Alliant UNIQUE.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 36,129 psi | 83% | 1759 fps | 100% |
| Accurate No. 5² | <<locked>> | 68% | 38,377 psi | 88% | 1893 fps | 97.1% |
| Accurate Solo 1000 | <<locked>> | 84% | 37,855 psi | 87% | 1677 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 36,274 psi | 83% | 1729 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 31,531 psi | 72% | 1755 fps | 92.8% |
| ADI AP 70N² | <<locked>> | 76% | 38,479 psi | 88% | 1788 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 37,405 psi | 86% | 1532 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 38,986 psi | 90% | 1594 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 36,289 psi | 83% | 1621 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 36,085 psi | 83% | 1680 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 38,087 psi | 88% | 1736 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 38,943 psi | 90% | 1857 fps | 100% |
| Alliant Green Dot | <<locked>> | 88% | 38,783 psi | 89% | 1722 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 32,184 psi | 74% | 1742 fps | 100% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 36,100 psi | 83% | 1903 fps | 94% |
| Alliant RED DOT | <<locked>> | 88% | 37,666 psi | 87% | 1673 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 35,984 psi | 83% | 1808 fps | 100% |
| Alliant UNIQUE | <<locked>> | 92% | 38,711 psi | 89% | 1864 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 36,245 psi | 83% | 1663 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 32,924 psi | 76% | 1624 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 37,956 psi | 87% | 1696 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 84% | 36,230 psi | 83% | 1742 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 38,000 psi | 87% | 1555 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 38,972 psi | 90% | 1745 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 72% | 36,187 psi | 83% | 1831 fps | 97.9% |
| Hodgdon Longshot² | <<locked>> | 68% | 35,215 psi | 81% | 1811 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,589 psi | 29% | 1152 fps | 100% |
| Hodgdon Universal | <<locked>> | 84% | 37,681 psi | 87% | 1775 fps | 100% |
| Lovex D036² | <<locked>> | 68% | 38,319 psi | 88% | 1890 fps | 97.1% |
| Lovex S011² | <<locked>> | 72% | 36,883 psi | 85% | 1703 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 35,708 psi | 82% | 1759 fps | 100% |
| Maxam CSB 1 | <<locked>> | 92% | 36,085 psi | 83% | 1719 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 39,030 psi | 90% | 1775 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 37,449 psi | 86% | 1713 fps | 100% |
| Maxam CSB 4 | <<locked>> | 84% | 36,724 psi | 84% | 1677 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 37,652 psi | 87% | 1624 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 35,201 psi | 81% | 1791 fps | 100% |
| Ramshot True Blue² | <<locked>> | 68% | 36,506 psi | 84% | 1824 fps | 99% |
| Ramshot Zip² | <<locked>> | 64% | 37,579 psi | 86% | 1736 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 39,291 psi | 90% | 1759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,284 psi | 26% | 1138 fps | 99.6% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 37,521 psi | 86% | 1831 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 92% | 37,681 psi | 87% | 1906 fps | 88.9% |
| Rottweil P 801² | <<locked>> | 72% | 36,114 psi | 83% | 1670 fps | 100% |
| Rottweil P 806 | <<locked>> | 96% | 35,070 psi | 81% | 1909 fps | 98.3% |
| Shooters World Auto Pistol² | <<locked>> | 68% | 38,319 psi | 88% | 1890 fps | 97.1% |
| SNPE Vectan A0 | <<locked>> | 92% | 36,651 psi | 84% | 1762 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 84% | 38,870 psi | 89% | 1736 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 37,768 psi | 87% | 1745 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 36,492 psi | 84% | 1562 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 96% | 35,534 psi | 82% | 1795 fps | 98.5% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 36,230 psi | 83% | 1736 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 84% | 36,143 psi | 83% | 1919 fps | 95.9% |
| Somchem MP200 | <<locked>> | 84% | 38,972 psi | 90% | 1847 fps | 100% |
| Somchem MS200 | <<locked>> | 88% | 37,869 psi | 87% | 1804 fps | 100% |
| Somchem S221*² | <<locked>> | 76% | 35,462 psi | 82% | 1847 fps | 91.3% |
| Vihtavuori 3N37 | <<locked>> | 92% | 38,682 psi | 89% | 1883 fps | 99.6% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 33,199 psi | 76% | 1811 fps | 87.5% |
| Vihtavuori N310² | <<locked>> | 68% | 37,217 psi | 86% | 1578 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 35,926 psi | 83% | 1677 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,892 psi | 69% | 1493 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 37,420 psi | 86% | 1768 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 37,159 psi | 85% | 1795 fps | 100% |
| Vihtavuori N350 | <<locked>> | 96% | 39,305 psi | 90% | 1883 fps | 99.7% |
| Winchester 231² | <<locked>> | 72% | 38,348 psi | 88% | 1745 fps | 100% |
| Winchester 572² | <<locked>> | 64% | 39,349 psi | 90% | 1896 fps | 99.2% |
| Winchester AutoComp | <<locked>> | 92% | 38,769 psi | 89% | 1778 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 18,463 psi | 42% | 1391 fps | 94.8% |
| Accurate No. 5*² | <<locked>> | 60% | 28,601 psi | 66% | 1703 fps | 93.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 20,668 psi | 48% | 1378 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 16,215 psi | 37% | 1322 fps | 99.4% |
| ADI AP 100* | <<locked>> | 84% | 21,016 psi | 48% | 1509 fps | 85.6% |
| ADI AP 70N² | <<locked>> | 60% | 23,728 psi | 55% | 1529 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 23,061 psi | 53% | 1302 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 21,944 psi | 50% | 1319 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,725 psi | 45% | 1329 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 21,321 psi | 49% | 1414 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 16,955 psi | 39% | 1342 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 21,567 psi | 50% | 1509 fps | 98.9% |
| Alliant Green Dot² | <<locked>> | 60% | 19,290 psi | 44% | 1368 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,487 psi | 26% | 1181 fps | 89.6% |
| Alliant POWER PISTOL*² | <<locked>> | 72% | 22,597 psi | 52% | 1594 fps | 85.7% |
| Alliant RED DOT² | <<locked>> | 60% | 18,666 psi | 43% | 1325 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 25,034 psi | 58% | 1594 fps | 99.5% |
| Alliant UNIQUE*² | 7 gr | 60% | 15,824 psi | 36% | 1352 fps | 94.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 18,507 psi | 43% | 1342 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,994 psi | 25% | 1135 fps | 99.7% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 19,972 psi | 46% | 1398 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 18,188 psi | 42% | 1385 fps | 99.8% |
| Hodgdon Clays² | <<locked>> | 60% | 23,337 psi | 54% | 1322 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 33,489 psi | 77% | 1663 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 23,380 psi | 54% | 1565 fps | 92.2% |
| Hodgdon Longshot² | <<locked>> | 60% | 26,063 psi | 60% | 1631 fps | 95.7% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,236 psi | 12% | 817 fps | 94.5% |
| Hodgdon Universal² | <<locked>> | 60% | 19,232 psi | 44% | 1421 fps | 100% |
| Lovex D036*² | <<locked>> | 60% | 28,558 psi | 66% | 1699 fps | 93.1% |
| Lovex S011² | <<locked>> | 60% | 25,556 psi | 59% | 1512 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 18,884 psi | 43% | 1424 fps | 98.8% |
| Maxam CSB 1² | <<locked>> | 60% | 15,505 psi | 36% | 1293 fps | 99.1% |
| Maxam CSB 2² | <<locked>> | 60% | 15,882 psi | 37% | 1339 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 18,057 psi | 42% | 1352 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 19,841 psi | 46% | 1375 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 22,220 psi | 51% | 1375 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 23,583 psi | 54% | 1562 fps | 98% |
| Ramshot True Blue² | <<locked>> | 60% | 27,151 psi | 62% | 1650 fps | 96.2% |
| Ramshot Zip² | <<locked>> | 60% | 32,982 psi | 76% | 1667 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 21,263 psi | 49% | 1457 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 4,728 psi | 11% | 791 fps | 87.5% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 14,315 psi | 33% | 1319 fps | 95.8% |
| ReloadSwiss RS 24* | <<locked>> | 88% | 33,736 psi | 78% | 1834 fps | 86.9% |
| Rottweil P 801² | <<locked>> | 60% | 25,309 psi | 58% | 1499 fps | 100% |
| Rottweil P 806*² | 13.8 gr | 76% | 16,665 psi | 38% | 1473 fps | 86.4% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 28,558 psi | 66% | 1699 fps | 93.1% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,592 psi | 36% | 1299 fps | 94.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 20,117 psi | 46% | 1401 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 19,305 psi | 44% | 1394 fps | 99.6% |
| SNPE Vectan BA10² | <<locked>> | 60% | 24,555 psi | 56% | 1368 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 64% | 14,721 psi | 34% | 1293 fps | 85.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 18,637 psi | 43% | 1391 fps | 99.9% |
| SNPE Vectan SP 2*² | <<locked>> | 68% | 21,205 psi | 49% | 1585 fps | 87% |
| Somchem MP200² | <<locked>> | 60% | 18,739 psi | 43% | 1427 fps | 96.1% |
| Somchem MS200² | <<locked>> | 60% | 17,158 psi | 39% | 1365 fps | 97% |
| Somchem S221*² | <<locked>> | 68% | 26,861 psi | 62% | 1667 fps | 86.3% |
| Vihtavuori 3N37*² | 8.4 gr | 60% | 14,156 psi | 33% | 1306 fps | 85.6% |
| Vihtavuori 3N38* | <<locked>> | 96% | 30,081 psi | 69% | 1749 fps | 85.7% |
| Vihtavuori N310² | <<locked>> | 60% | 30,023 psi | 69% | 1476 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 19,711 psi | 45% | 1391 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,066 psi | 25% | 1093 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,564 psi | 40% | 1394 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 16,027 psi | 37% | 1339 fps | 95.6% |
| Vihtavuori N350*² | <<locked>> | 64% | 14,968 psi | 34% | 1335 fps | 87.3% |
| Winchester 231² | <<locked>> | 60% | 26,832 psi | 62% | 1562 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 34,171 psi | 79% | 1808 fps | 98.1% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,751 psi | 36% | 1316 fps | 98.6% |
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 37 powders for .357 Mag. loaded with the .355 | 90gr | Lehigh Defense Xtreme Penetrator. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,919 fps; across all powders the maximum-charge window runs from 1,138 fps to 1,919 fps. ADI AP 100 gives the best case fill at 100 %, and 37 of the 37 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 26–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant Herco, Baschieri & Pellagri 102 Pistol 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. Rottweil P 806, Vihtavuori 3N37, Alliant UNIQUE rank at the top here: for .357 Mag. with the .355 | 90gr | Lehigh Defense Xtreme Penetrator they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100, Alliant POWER PISTOL burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 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.