Load Specifications
Load data in caliber .357 SIG with .356 | 100gr | H&N HP HS bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant BULLSEYE, Somchem MP200 and Vihtavuori N340.
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>> | 88% | 37,231 psi | 84% | 1506 fps | 99.1% |
| Accurate No. 5*² | <<locked>> | 72% | 35,592 psi | 80% | 1562 fps | 92.2% |
| Accurate Solo 1000 | <<locked>> | 92% | 39,059 psi | 88% | 1453 fps | 100% |
| Accurate Solo 1250ᴾ | <<locked>> | 100% | 39,697 psi | 90% | 1526 fps | 100% |
| ADI AP 70N | <<locked>> | 84% | 38,740 psi | 88% | 1542 fps | 100% |
| ADI APS 350 | <<locked>> | 88% | 38,928 psi | 88% | 1319 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 36,796 psi | 83% | 1398 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 36,651 psi | 83% | 1450 fps | 100% |
| Alliant BE-86 | <<locked>> | 96% | 37,405 psi | 85% | 1490 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 88% | 39,175 psi | 89% | 1591 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 26,078 psi | 59% | 1385 fps | 98.1% |
| Alliant POWER PISTOL*ᴾ | <<locked>> | 100% | 39,204 psi | 89% | 1663 fps | 90.8% |
| Alliant RED DOT | <<locked>> | 96% | 38,261 psi | 86% | 1440 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 37,115 psi | 84% | 1562 fps | 100% |
| Alliant UNIQUEᴾ | <<locked>> | 100% | 37,782 psi | 85% | 1585 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 37,507 psi | 85% | 1440 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 26,803 psi | 61% | 1319 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 88% | 38,972 psi | 88% | 1483 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 35,462 psi | 80% | 1486 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 36,434 psi | 82% | 1470 fps | 100% |
| Hodgdon HS-6 | <<locked>> | 80% | 37,420 psi | 85% | 1578 fps | 95% |
| Hodgdon Longshot² | <<locked>> | 76% | 36,187 psi | 82% | 1558 fps | 96.3% |
| Hodgdon TiteGroup² | <<locked>> | 64% | 38,116 psi | 86% | 1430 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,066 psi | 23% | 906 fps | 99.4% |
| Hodgdon Universal | <<locked>> | 92% | 37,623 psi | 85% | 1529 fps | 100% |
| Lovex D036*² | <<locked>> | 72% | 35,534 psi | 80% | 1565 fps | 92.2% |
| Lovex S011 | <<locked>> | 80% | 39,102 psi | 88% | 1483 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 36,637 psi | 83% | 1522 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 35,563 psi | 80% | 1470 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 37,144 psi | 84% | 1516 fps | 100% |
| Maxam CSB 3 | <<locked>> | 96% | 37,579 psi | 85% | 1473 fps | 100% |
| Maxam CSB 4 | <<locked>> | 92% | 37,666 psi | 85% | 1450 fps | 100% |
| Maxam CSB 5 | <<locked>> | 88% | 39,479 psi | 89% | 1414 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 36,825 psi | 83% | 1555 fps | 99.4% |
| Ramshot True Blue² | <<locked>> | 76% | 37,956 psi | 86% | 1581 fps | 96.8% |
| Ramshot Zip² | <<locked>> | 68% | 36,013 psi | 81% | 1470 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 88% | 38,696 psi | 87% | 1516 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 8,688 psi | 20% | 876 fps | 94.7% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 36,042 psi | 81% | 1565 fps | 100% |
| Rottweil P 801 | <<locked>> | 80% | 36,622 psi | 83% | 1450 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 27,006 psi | 61% | 1516 fps | 90.6% |
| Shooters World Auto Pistol*² | <<locked>> | 72% | 35,534 psi | 80% | 1565 fps | 92.2% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 37,173 psi | 84% | 1516 fps | 99.9% |
| SNPE Vectan A1 | <<locked>> | 92% | 39,624 psi | 90% | 1499 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 84% | 39,711 psi | 90% | 1368 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 31,328 psi | 71% | 1463 fps | 93.7% |
| SNPE Vectan BA9 1/2 | <<locked>> | 96% | 40,016 psi | 90% | 1542 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 96% | 38,856 psi | 88% | 1683 fps | 92.8% |
| Somchem MP200 | <<locked>> | 92% | 38,537 psi | 87% | 1578 fps | 99.8% |
| Somchem MS200 | <<locked>> | 96% | 37,782 psi | 85% | 1545 fps | 100% |
| Vihtavuori 3N37ᴾ | <<locked>> | 100% | 38,667 psi | 87% | 1608 fps | 97.3% |
| Vihtavuori N310² | <<locked>> | 72% | 37,449 psi | 85% | 1352 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 37,101 psi | 84% | 1453 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 20,378 psi | 46% | 1148 fps | 100% |
| Vihtavuori N330 | <<locked>> | 92% | 39,523 psi | 89% | 1549 fps | 100% |
| Vihtavuori N340 | <<locked>> | 96% | 37,594 psi | 85% | 1542 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 32,010 psi | 72% | 1503 fps | 95.5% |
| Winchester 231² | <<locked>> | 76% | 36,013 psi | 81% | 1470 fps | 100% |
| Winchester AutoComp ᴾ | <<locked>> | 100% | 38,493 psi | 87% | 1532 fps | 100% |
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>> | 60% | 15,287 psi | 35% | 1083 fps | 87.5% |
| Accurate No. 5*² | <<locked>> | 64% | 26,527 psi | 60% | 1401 fps | 87.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 17,535 psi | 40% | 1106 fps | 100% |
| Accurate Solo 1250*² | <<locked>> | 60% | 13,227 psi | 30% | 1033 fps | 94.9% |
| ADI AP 70N² | <<locked>> | 60% | 19,174 psi | 43% | 1211 fps | 99.3% |
| ADI APS 350² | <<locked>> | 60% | 20,639 psi | 47% | 1063 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 16,998 psi | 38% | 1076 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 17,666 psi | 40% | 1129 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 13,256 psi | 30% | 1040 fps | 97.3% |
| Alliant BULLSEYE*² | 5.1 gr | 60% | 17,956 psi | 41% | 1188 fps | 94.1% |
| Alliant Herco*² | <<locked>> | 68% | 11,618 psi | 26% | 1004 fps | 85.4% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 28,587 psi | 65% | 1480 fps | 85.3% |
| Alliant RED DOT² | <<locked>> | 60% | 15,534 psi | 35% | 1060 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 20,537 psi | 46% | 1253 fps | 95.2% |
| Alliant UNIQUE*² | <<locked>> | 60% | 12,981 psi | 29% | 1053 fps | 87.5% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 15,345 psi | 35% | 1066 fps | 99.5% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 8,615 psi | 19% | 879 fps | 95.2% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 15,896 psi | 36% | 1109 fps | 99.9% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 26,818 psi | 61% | 1352 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 28,572 psi | 65% | 1355 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 21,277 psi | 48% | 1280 fps | 85.8% |
| Hodgdon Longshot*² | <<locked>> | 60% | 20,871 psi | 47% | 1273 fps | 87.8% |
| Hodgdon TiteGroup² | <<locked>> | 60% | 33,707 psi | 76% | 1378 fps | 100% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,206 psi | 10% | 627 fps | 86.7% |
| Hodgdon Universal² | <<locked>> | 60% | 15,940 psi | 36% | 1129 fps | 97.8% |
| Lovex D036*² | <<locked>> | 64% | 26,484 psi | 60% | 1398 fps | 87.2% |
| Lovex S011² | <<locked>> | 60% | 21,306 psi | 48% | 1207 fps | 100% |
| Lovex S020*² | <<locked>> | 60% | 15,156 psi | 34% | 1109 fps | 93.2% |
| Maxam CSB 1*² | <<locked>> | 60% | 12,676 psi | 29% | 1010 fps | 94.4% |
| Maxam CSB 2² | <<locked>> | 60% | 12,038 psi | 27% | 1037 fps | 98.1% |
| Maxam CSB 3² | <<locked>> | 60% | 14,591 psi | 33% | 1063 fps | 99.1% |
| Maxam CSB 4² | <<locked>> | 60% | 16,679 psi | 38% | 1102 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 18,985 psi | 43% | 1115 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 18,913 psi | 43% | 1217 fps | 91.7% |
| Ramshot True Blue*² | <<locked>> | 60% | 21,437 psi | 48% | 1280 fps | 88.4% |
| Ramshot Zip² | <<locked>> | 60% | 27,383 psi | 62% | 1345 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 16,882 psi | 38% | 1161 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 76% | 5,497 psi | 12% | 719 fps | 86.3% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 11,560 psi | 26% | 1020 fps | 87.6% |
| Rottweil P 801² | <<locked>> | 60% | 20,102 psi | 45% | 1198 fps | 100% |
| Rottweil P 806* | <<locked>> | 96% | 23,540 psi | 53% | 1444 fps | 88.1% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 26,484 psi | 60% | 1398 fps | 87.2% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,155 psi | 30% | 1017 fps | 87.7% |
| SNPE Vectan A1² | <<locked>> | 60% | 16,969 psi | 38% | 1119 fps | 98.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 21,495 psi | 49% | 1112 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 19,072 psi | 43% | 1211 fps | 85.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 15,171 psi | 34% | 1093 fps | 96.4% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 27,021 psi | 61% | 1480 fps | 86.6% |
| Somchem MP200*² | 5.7 gr | 60% | 15,461 psi | 35% | 1119 fps | 89.2% |
| Somchem MS200*² | <<locked>> | 60% | 14,025 psi | 32% | 1060 fps | 90.5% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 19,348 psi | 44% | 1250 fps | 87% |
| Vihtavuori N310² | <<locked>> | 60% | 26,731 psi | 60% | 1217 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 16,215 psi | 37% | 1112 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 7,194 psi | 16% | 801 fps | 99.3% |
| Vihtavuori N330² | <<locked>> | 60% | 14,591 psi | 33% | 1109 fps | 97.6% |
| Vihtavuori N340*² | 5.2 gr | 60% | 13,227 psi | 30% | 1047 fps | 88.5% |
| Vihtavuori N350* | <<locked>> | 80% | 18,449 psi | 42% | 1224 fps | 86.5% |
| Winchester 231² | <<locked>> | 60% | 21,712 psi | 49% | 1240 fps | 99.9% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,502 psi | 28% | 1020 fps | 92.6% |
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 59 powders for .357 SIG loaded with the .356 | 100gr | H&N HP HS. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,683 fps; across all powders the maximum-charge window runs from 876 fps to 1,683 fps. Accurate Solo 1250 gives the best case fill at 100 %, and 48 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 20–90 %, leaving at least 10 % headroom. Accurate Solo 1250, Alliant Herco, Alliant POWER 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. Alliant BULLSEYE, Somchem MP200, Vihtavuori N340 rank at the top here: for .357 SIG with the .356 | 100gr | H&N HP HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Alliant POWER PISTOL, Lovex D036 burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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.