Load Specifications
Load data in caliber .357 Mag. with .355 | 90gr | Sierra Sig V-Crown bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Alliant UNIQUE and Vihtavuori N350.
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. 2² | <<locked>> | 76% | 35,563 psi | 82% | 1772 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 37,101 psi | 85% | 1890 fps | 97.3% |
| Accurate Solo 1000 | <<locked>> | 80% | 37,115 psi | 85% | 1683 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 36,216 psi | 83% | 1742 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 35,404 psi | 81% | 1850 fps | 95.3% |
| ADI AP 70N² | <<locked>> | 72% | 38,261 psi | 88% | 1791 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 39,262 psi | 90% | 1578 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 37,913 psi | 87% | 1598 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 36,318 psi | 83% | 1634 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 36,085 psi | 83% | 1690 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 38,189 psi | 88% | 1749 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 76% | 38,682 psi | 89% | 1870 fps | 100% |
| Alliant Green Dot | <<locked>> | 84% | 39,276 psi | 90% | 1739 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 36,564 psi | 84% | 1824 fps | 100% |
| Alliant POWER PISTOL* | <<locked>> | 84% | 36,564 psi | 84% | 1929 fps | 94.9% |
| Alliant RED DOT | <<locked>> | 84% | 37,739 psi | 87% | 1683 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 35,201 psi | 81% | 1814 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 36,027 psi | 83% | 1831 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 36,361 psi | 84% | 1677 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 36,709 psi | 84% | 1686 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 37,449 psi | 86% | 1703 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 80% | 36,840 psi | 85% | 1762 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 36,651 psi | 84% | 1558 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 35,766 psi | 82% | 1841 fps | 98.3% |
| Hodgdon Longshot² | <<locked>> | 64% | 34,447 psi | 79% | 1814 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 15,345 psi | 35% | 1224 fps | 100% |
| Hodgdon Universal | <<locked>> | 80% | 39,001 psi | 90% | 1804 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 37,086 psi | 85% | 1890 fps | 97.3% |
| Lovex S011² | <<locked>> | 68% | 35,940 psi | 83% | 1706 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 36,535 psi | 84% | 1785 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 36,738 psi | 84% | 1742 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 36,579 psi | 84% | 1745 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 38,218 psi | 88% | 1739 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 36,985 psi | 85% | 1693 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 37,333 psi | 86% | 1634 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 39,291 psi | 90% | 1873 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 35,578 psi | 82% | 1827 fps | 99.2% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 35,679 psi | 82% | 1713 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,895 psi | 32% | 1217 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 88% | 38,609 psi | 89% | 1860 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 88% | 38,421 psi | 88% | 1942 fps | 90.2% |
| Rottweil P 801² | <<locked>> | 68% | 36,419 psi | 84% | 1680 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 37,246 psi | 86% | 1952 fps | 99.1% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 37,086 psi | 85% | 1890 fps | 97.3% |
| SNPE Vectan A0 | <<locked>> | 88% | 37,405 psi | 86% | 1795 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 80% | 38,769 psi | 89% | 1749 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 37,666 psi | 87% | 1762 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 35,665 psi | 82% | 1565 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 36,347 psi | 84% | 1831 fps | 99.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 36,260 psi | 83% | 1752 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 37,173 psi | 85% | 1949 fps | 96.7% |
| Somchem MP200 | <<locked>> | 80% | 39,146 psi | 90% | 1867 fps | 100% |
| Somchem MS200 | <<locked>> | 84% | 38,276 psi | 88% | 1824 fps | 100% |
| Somchem S221*² | <<locked>> | 72% | 35,839 psi | 82% | 1870 fps | 92.4% |
| Vihtavuori 3N37 | <<locked>> | 84% | 35,621 psi | 82% | 1847 fps | 99.4% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 38,711 psi | 89% | 1932 fps | 91.2% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 30,560 psi | 70% | 1847 fps | 91.3% |
| Vihtavuori N310² | <<locked>> | 64% | 36,448 psi | 84% | 1585 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 35,737 psi | 82% | 1683 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 33,968 psi | 78% | 1555 fps | 100% |
| Vihtavuori N330 | <<locked>> | 80% | 37,521 psi | 86% | 1781 fps | 100% |
| Vihtavuori N340 | <<locked>> | 84% | 37,565 psi | 86% | 1814 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 35,969 psi | 83% | 1847 fps | 99.6% |
| Winchester 231² | <<locked>> | 68% | 38,116 psi | 88% | 1759 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 35,534 psi | 82% | 1745 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. 2² | <<locked>> | 60% | 21,147 psi | 49% | 1476 fps | 97.1% |
| Accurate No. 5² | <<locked>> | 60% | 32,343 psi | 74% | 1795 fps | 95.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 22,669 psi | 52% | 1430 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 18,826 psi | 43% | 1398 fps | 100% |
| ADI AP 100* | <<locked>> | 80% | 21,509 psi | 49% | 1532 fps | 86.9% |
| ADI AP 70N² | <<locked>> | 60% | 27,224 psi | 63% | 1604 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,222 psi | 58% | 1355 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,757 psi | 55% | 1365 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 22,365 psi | 51% | 1388 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 23,786 psi | 55% | 1470 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 19,783 psi | 45% | 1414 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 24,410 psi | 56% | 1591 fps | 99.8% |
| Alliant Green Dot² | <<locked>> | 60% | 21,828 psi | 50% | 1430 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 13,938 psi | 32% | 1273 fps | 93.7% |
| Alliant POWER PISTOL*² | <<locked>> | 68% | 23,235 psi | 53% | 1621 fps | 87.1% |
| Alliant RED DOT² | <<locked>> | 60% | 21,495 psi | 49% | 1391 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 27,601 psi | 63% | 1667 fps | 100% |
| Alliant UNIQUE² | 7.8 gr | 60% | 19,014 psi | 44% | 1453 fps | 97.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,190 psi | 49% | 1407 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,474 psi | 31% | 1217 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 23,032 psi | 53% | 1463 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 21,147 psi | 49% | 1463 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,556 psi | 59% | 1375 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 27,064 psi | 62% | 1663 fps | 95.2% |
| Hodgdon Longshot² | <<locked>> | 60% | 29,950 psi | 69% | 1729 fps | 97.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,107 psi | 16% | 902 fps | 98.9% |
| Hodgdon Universal² | <<locked>> | 60% | 22,829 psi | 52% | 1509 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 32,285 psi | 74% | 1798 fps | 95.7% |
| Lovex S011² | <<locked>> | 60% | 28,311 psi | 65% | 1578 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,046 psi | 51% | 1509 fps | 99.8% |
| Maxam CSB 1² | <<locked>> | 60% | 18,028 psi | 41% | 1368 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 19,218 psi | 44% | 1421 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 20,755 psi | 48% | 1421 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,046 psi | 51% | 1427 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,237 psi | 58% | 1440 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 26,774 psi | 62% | 1644 fps | 99.3% |
| Ramshot True Blue² | <<locked>> | 60% | 30,937 psi | 71% | 1742 fps | 98.2% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 25,324 psi | 58% | 1539 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,715 psi | 15% | 892 fps | 95% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,129 psi | 39% | 1414 fps | 98.4% |
| ReloadSwiss RS 24* | <<locked>> | 80% | 30,501 psi | 70% | 1785 fps | 86% |
| Rottweil P 801² | <<locked>> | 60% | 29,138 psi | 67% | 1565 fps | 100% |
| Rottweil P 806*² | 13.7 gr | 68% | 16,317 psi | 38% | 1453 fps | 86.6% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 32,285 psi | 74% | 1798 fps | 95.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 18,115 psi | 42% | 1381 fps | 97.2% |
| SNPE Vectan A1² | <<locked>> | 60% | 22,553 psi | 52% | 1467 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 21,698 psi | 50% | 1463 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 26,847 psi | 62% | 1424 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 15,214 psi | 35% | 1312 fps | 86.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,118 psi | 49% | 1460 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 19,160 psi | 44% | 1519 fps | 85.5% |
| Somchem MP200² | <<locked>> | 60% | 21,944 psi | 50% | 1522 fps | 98.3% |
| Somchem MS200² | <<locked>> | 60% | 20,044 psi | 46% | 1453 fps | 98.9% |
| Somchem S221*² | <<locked>> | 64% | 27,644 psi | 64% | 1699 fps | 87.9% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 16,969 psi | 39% | 1404 fps | 90% |
| Vihtavuori 3N38* | <<locked>> | 88% | 27,862 psi | 64% | 1716 fps | 85.2% |
| Vihtavuori N105* | <<locked>> | 92% | 23,844 psi | 55% | 1683 fps | 86.2% |
| Vihtavuori N310² | <<locked>> | 60% | 32,358 psi | 74% | 1522 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 22,829 psi | 52% | 1460 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 13,387 psi | 31% | 1152 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 20,929 psi | 48% | 1480 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 18,927 psi | 44% | 1430 fps | 98% |
| Vihtavuori N350*² | 8.8 gr | 60% | 15,548 psi | 36% | 1355 fps | 88.7% |
| Winchester 231² | <<locked>> | 60% | 29,457 psi | 68% | 1617 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,507 psi | 43% | 1398 fps | 99.8% |
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 24 powders for .357 Mag. loaded with the .355 | 90gr | Sierra Sig V-Crown. Rottweil P 806 delivers the highest muzzle velocity at 1,952 fps; across all powders the maximum-charge window runs from 1,217 fps to 1,952 fps. ADI AP 100 gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 32–90 %, 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, Alliant UNIQUE, Vihtavuori N350 rank at the top here: for .357 Mag. with the .355 | 90gr | Sierra Sig V-Crown they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, 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.