Load Specifications
Load data in caliber .357 SIG with .355 | 90gr | Lehigh Defense Xtreme Defense bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant BULLSEYE, Alliant Sport Pistol and Ramshot Silhouette.
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: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 96% | 38,087 psi | 86% | 1535 fps | 97.1% |
| Accurate No. 5* | <<locked>> | 80% | 36,492 psi | 82% | 1594 fps | 88.5% |
| Accurate Solo 1000ᴾ | <<locked>> | 100% | 38,218 psi | 86% | 1483 fps | 100% |
| Accurate Solo 1250ᴾ | <<locked>> | 100% | 31,981 psi | 72% | 1463 fps | 100% |
| ADI AP 70N | <<locked>> | 92% | 37,942 psi | 86% | 1581 fps | 100% |
| ADI APS 350 | <<locked>> | 96% | 40,030 psi | 90% | 1365 fps | 100% |
| ADI APS 450 | <<locked>> | 96% | 37,637 psi | 85% | 1381 fps | 100% |
| ADI AS 30ᴾ | <<locked>> | 100% | 36,216 psi | 82% | 1434 fps | 100% |
| ADI AS 50Nᴾ | <<locked>> | 100% | 39,015 psi | 88% | 1522 fps | 100% |
| Alliant BE-86ᴾ | <<locked>> | 100% | 33,402 psi | 76% | 1483 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 96% | 38,841 psi | 88% | 1624 fps | 99.6% |
| Alliant Green Dotᴾ | <<locked>> | 100% | 35,708 psi | 81% | 1486 fps | 100% |
| Alliant Herco*ᴾ | <<locked>> | 100% | 20,218 psi | 46% | 1293 fps | 92.1% |
| Alliant RED DOTᴾ | <<locked>> | 100% | 33,620 psi | 76% | 1430 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 88% | 36,869 psi | 83% | 1594 fps | 99% |
| Alliant UNIQUEᴾ | <<locked>> | 100% | 29,834 psi | 67% | 1499 fps | 97.4% |
| Baschieri & Pellagri 100ᴾ | <<locked>> | 100% | 36,912 psi | 83% | 1473 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 20,711 psi | 47% | 1260 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 96% | 38,043 psi | 86% | 1519 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 80% | 39,494 psi | 89% | 1591 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 32,967 psi | 75% | 1322 fps | 100% |
| Hodgdon HP38² | <<locked>> | 76% | 38,392 psi | 87% | 1535 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 88% | 37,884 psi | 86% | 1601 fps | 91.5% |
| Hodgdon Longshot* | <<locked>> | 84% | 37,043 psi | 84% | 1594 fps | 93.3% |
| Hodgdon TiteGroup² | <<locked>> | 68% | 35,766 psi | 81% | 1447 fps | 100% |
| Hodgdon TrailBoss*ᴾ | <<locked>> | 100% | 7,847 psi | 18% | 853 fps | 94.9% |
| Hodgdon Universalᴾ | <<locked>> | 100% | 36,753 psi | 83% | 1565 fps | 100% |
| Lovex D032² | <<locked>> | 68% | 38,885 psi | 88% | 1519 fps | 100% |
| Lovex D036* | <<locked>> | 80% | 36,434 psi | 82% | 1591 fps | 88.4% |
| Lovex S011 | <<locked>> | 84% | 36,071 psi | 82% | 1480 fps | 100% |
| Lovex S020ᴾ | <<locked>> | 100% | 39,421 psi | 89% | 1594 fps | 99.9% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 28,427 psi | 64% | 1404 fps | 99.9% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 28,514 psi | 64% | 1453 fps | 100% |
| Maxam CSB 3ᴾ | <<locked>> | 100% | 32,967 psi | 75% | 1460 fps | 100% |
| Maxam CSB 4ᴾ | <<locked>> | 100% | 36,376 psi | 82% | 1480 fps | 100% |
| Maxam CSB 5 | <<locked>> | 96% | 39,030 psi | 88% | 1457 fps | 100% |
| Ramshot Silhouette | <<locked>> | 88% | 36,854 psi | 83% | 1585 fps | 97.5% |
| Ramshot True Blue* | <<locked>> | 84% | 39,262 psi | 89% | 1617 fps | 94.1% |
| Ramshot Zip² | <<locked>> | 76% | 36,782 psi | 83% | 1522 fps | 100% |
| ReloadSwiss RS 12ᴾ | <<locked>> | 100% | 39,523 psi | 89% | 1585 fps | 100% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 28,239 psi | 64% | 1483 fps | 98.4% |
| Rottweil P 801 | <<locked>> | 88% | 36,071 psi | 82% | 1499 fps | 100% |
| Shooters World Auto Pistol* | <<locked>> | 80% | 36,434 psi | 82% | 1591 fps | 88.4% |
| Shooters World Clean Shot² | <<locked>> | 68% | 38,885 psi | 88% | 1519 fps | 100% |
| Shooters World Ultimate Pistol² | <<locked>> | 68% | 37,942 psi | 86% | 1604 fps | 99.7% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 29,298 psi | 66% | 1424 fps | 96.8% |
| SNPE Vectan A1ᴾ | <<locked>> | 100% | 39,479 psi | 89% | 1539 fps | 100% |
| SNPE Vectan BA 9ᴾ | <<locked>> | 100% | 38,159 psi | 86% | 1535 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 88% | 37,623 psi | 85% | 1381 fps | 100% |
| SNPE Vectan BA9 1/2ᴾ | <<locked>> | 100% | 35,302 psi | 80% | 1522 fps | 100% |
| Somchem MP200ᴾ | <<locked>> | 100% | 38,218 psi | 86% | 1604 fps | 98.5% |
| Somchem MS200ᴾ | <<locked>> | 100% | 33,431 psi | 76% | 1516 fps | 98.9% |
| Somchem S121² | <<locked>> | 64% | 34,954 psi | 79% | 1555 fps | 100% |
| Vihtavuori 3N37*ᴾ | <<locked>> | 100% | 29,805 psi | 67% | 1493 fps | 90.5% |
| Vihtavuori N310 | <<locked>> | 80% | 39,073 psi | 88% | 1417 fps | 100% |
| Vihtavuori N320ᴾ | <<locked>> | 100% | 39,682 psi | 90% | 1535 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 15,635 psi | 35% | 1102 fps | 100% |
| Vihtavuori N330ᴾ | <<locked>> | 100% | 37,695 psi | 85% | 1578 fps | 100% |
| Vihtavuori N340ᴾ | <<locked>> | 100% | 33,199 psi | 75% | 1509 fps | 98.3% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 25,077 psi | 57% | 1398 fps | 87.9% |
| Winchester 231 | <<locked>> | 84% | 36,782 psi | 83% | 1522 fps | 100% |
| Winchester 244² | <<locked>> | 72% | 37,521 psi | 85% | 1519 fps | 100% |
| Winchester 572*² | <<locked>> | 76% | 38,247 psi | 86% | 1624 fps | 93.1% |
| Winchester AutoComp ᴾ | <<locked>> | 100% | 30,052 psi | 68% | 1453 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 72% | 18,521 psi | 42% | 1184 fps | 86.8% |
| Accurate No. 5*² | <<locked>> | 76% | 32,242 psi | 73% | 1526 fps | 86.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 14,736 psi | 33% | 1063 fps | 99% |
| Accurate Solo 1250*² | <<locked>> | 60% | 10,327 psi | 23% | 961 fps | 87.3% |
| ADI AP 70N*² | <<locked>> | 60% | 15,258 psi | 34% | 1145 fps | 94.9% |
| ADI APS 350² | <<locked>> | 60% | 17,985 psi | 41% | 1047 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 16,027 psi | 36% | 1040 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 13,721 psi | 31% | 1033 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 14,040 psi | 32% | 1066 fps | 98.1% |
| Alliant BE-86*² | <<locked>> | 60% | 10,269 psi | 23% | 971 fps | 90.6% |
| Alliant BULLSEYE*² | 4.2 gr | 60% | 14,315 psi | 32% | 1106 fps | 86.7% |
| Alliant Green Dot² | <<locked>> | 60% | 13,184 psi | 30% | 1043 fps | 97.5% |
| Alliant Herco* | <<locked>> | 88% | 15,258 psi | 34% | 1155 fps | 87.1% |
| Alliant RED DOT² | <<locked>> | 60% | 12,850 psi | 29% | 1027 fps | 99.8% |
| Alliant Sport Pistol*² | 4.7 gr | 60% | 16,389 psi | 37% | 1168 fps | 88.1% |
| Alliant UNIQUE*² | <<locked>> | 72% | 14,692 psi | 33% | 1142 fps | 86.3% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 12,125 psi | 27% | 1001 fps | 95.2% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 6,817 psi | 15% | 827 fps | 87.7% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 12,473 psi | 28% | 1050 fps | 96.5% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 19,798 psi | 45% | 1260 fps | 96.4% |
| Hodgdon Clays² | <<locked>> | 60% | 13,489 psi | 30% | 978 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 23,163 psi | 52% | 1299 fps | 99.7% |
| Hodgdon HS-6* | <<locked>> | 80% | 28,747 psi | 65% | 1453 fps | 87% |
| Hodgdon Longshot*² | <<locked>> | 72% | 24,598 psi | 56% | 1378 fps | 86.7% |
| Hodgdon TiteGroup² | <<locked>> | 60% | 27,572 psi | 62% | 1335 fps | 100% |
| Hodgdon TrailBoss*² | <<locked>> | 76% | 4,656 psi | 11% | 682 fps | 85.1% |
| Hodgdon Universal*² | <<locked>> | 60% | 12,125 psi | 27% | 1043 fps | 91.3% |
| Lovex D032² | <<locked>> | 60% | 28,921 psi | 65% | 1378 fps | 99.4% |
| Lovex D036*² | <<locked>> | 76% | 32,198 psi | 73% | 1522 fps | 86.4% |
| Lovex S011² | <<locked>> | 60% | 17,332 psi | 39% | 1145 fps | 97.2% |
| Lovex S020*² | <<locked>> | 64% | 13,518 psi | 31% | 1093 fps | 87.7% |
| Maxam CSB 1*² | <<locked>> | 60% | 9,906 psi | 22% | 938 fps | 86.6% |
| Maxam CSB 2*² | <<locked>> | 60% | 8,702 psi | 20% | 955 fps | 90.9% |
| Maxam CSB 3*² | <<locked>> | 60% | 11,937 psi | 27% | 1010 fps | 94.8% |
| Maxam CSB 4² | <<locked>> | 60% | 13,024 psi | 29% | 1037 fps | 98.2% |
| Maxam CSB 5² | <<locked>> | 60% | 15,447 psi | 35% | 1083 fps | 100% |
| Ramshot Silhouette*² | 5.9 gr | 64% | 16,955 psi | 38% | 1191 fps | 85.9% |
| Ramshot True Blue*² | <<locked>> | 68% | 23,018 psi | 52% | 1335 fps | 85.5% |
| Ramshot Zip² | <<locked>> | 60% | 22,162 psi | 50% | 1283 fps | 99.2% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 12,285 psi | 28% | 1086 fps | 98.4% |
| ReloadSwiss RS 20*² | <<locked>> | 72% | 13,242 psi | 30% | 1106 fps | 86.2% |
| Rottweil P 801² | <<locked>> | 60% | 15,505 psi | 35% | 1145 fps | 100% |
| Shooters World Auto Pistol*² | <<locked>> | 76% | 32,198 psi | 73% | 1522 fps | 86.4% |
| Shooters World Clean Shot² | <<locked>> | 60% | 28,921 psi | 65% | 1378 fps | 99.4% |
| Shooters World Ultimate Pistol² | <<locked>> | 60% | 27,876 psi | 63% | 1440 fps | 97.6% |
| SNPE Vectan A0*² | <<locked>> | 72% | 14,634 psi | 33% | 1086 fps | 85.8% |
| SNPE Vectan A1*² | <<locked>> | 60% | 13,329 psi | 30% | 1043 fps | 93.8% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 12,734 psi | 29% | 1020 fps | 88.6% |
| SNPE Vectan BA10² | <<locked>> | 60% | 18,608 psi | 42% | 1096 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 11,792 psi | 27% | 1014 fps | 89.4% |
| Somchem MP200*² | <<locked>> | 68% | 15,403 psi | 35% | 1142 fps | 85.3% |
| Somchem MS200*² | <<locked>> | 64% | 13,126 psi | 30% | 1056 fps | 85.5% |
| Somchem S121² | <<locked>> | 60% | 30,472 psi | 69% | 1486 fps | 99.7% |
| Vihtavuori 3N37* | <<locked>> | 92% | 23,467 psi | 53% | 1371 fps | 86.4% |
| Vihtavuori N310² | <<locked>> | 60% | 21,727 psi | 49% | 1184 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 12,386 psi | 28% | 1047 fps | 98% |
| Vihtavuori N32C Tin Star*² | <<locked>> | 60% | 5,337 psi | 12% | 745 fps | 93.7% |
| Vihtavuori N330*² | <<locked>> | 60% | 10,979 psi | 25% | 1024 fps | 90.3% |
| Vihtavuori N340*² | <<locked>> | 72% | 15,302 psi | 35% | 1138 fps | 87.5% |
| Vihtavuori N350* | <<locked>> | 96% | 22,568 psi | 51% | 1345 fps | 85.9% |
| Winchester 231² | <<locked>> | 60% | 17,376 psi | 39% | 1175 fps | 97.1% |
| Winchester 244² | <<locked>> | 60% | 25,280 psi | 57% | 1339 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 24,192 psi | 55% | 1375 fps | 85.4% |
| Winchester AutoComp *² | <<locked>> | 64% | 11,182 psi | 25% | 1004 fps | 87.2% |
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 SIG loaded with the .355 | 90gr | Lehigh Defense Xtreme Defense. Alliant BULLSEYE delivers the highest muzzle velocity at 1,624 fps; across all powders the maximum-charge window runs from 853 fps to 1,624 fps. Accurate Solo 1000 gives the best case fill at 100 %, and 55 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 18–90 %, leaving at least 10 % headroom. Accurate Solo 1000, Accurate Solo 1250, ADI AS 30 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. Alliant BULLSEYE, Alliant Sport Pistol, Ramshot Silhouette rank at the top here: for .357 SIG with the .355 | 90gr | Lehigh Defense Xtreme Defense they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Alliant Herco, Hodgdon HS-6 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1000, Accurate Solo 1250, ADI APS 350 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.