Load Specifications
Load data in caliber .357 SIG with .355 | 125gr | Speer Hollow Point Gold Dot bullet and 67 powders. The key underlying parameters are shown in the table above.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 84% | 35,723 psi | 81% | 1266 fps | 99.7% |
| Accurate No. 5² | <<locked>> | 72% | 37,565 psi | 85% | 1371 fps | 95.3% |
| Accurate Solo 1000 | <<locked>> | 88% | 37,057 psi | 84% | 1207 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 39,073 psi | 88% | 1289 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 27,586 psi | 62% | 1220 fps | 88.6% |
| ADI AP 70N | <<locked>> | 80% | 37,768 psi | 85% | 1296 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 37,869 psi | 86% | 1106 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 38,870 psi | 88% | 1148 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 39,653 psi | 90% | 1207 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 39,479 psi | 89% | 1253 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 37,492 psi | 85% | 1263 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 38,043 psi | 86% | 1342 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 38,827 psi | 88% | 1250 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 29,080 psi | 66% | 1230 fps | 99.8% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 37,884 psi | 86% | 1417 fps | 92.9% |
| Alliant RED DOT | <<locked>> | 92% | 37,347 psi | 84% | 1207 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 36,347 psi | 82% | 1322 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 37,898 psi | 86% | 1352 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 39,624 psi | 90% | 1240 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 28,877 psi | 65% | 1145 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 37,202 psi | 84% | 1243 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 36,840 psi | 83% | 1286 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 39,624 psi | 90% | 1155 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 38,870 psi | 88% | 1270 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 35,172 psi | 80% | 1325 fps | 96.3% |
| Hodgdon Longshot² | <<locked>> | 76% | 39,929 psi | 90% | 1385 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,343 psi | 28% | 817 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 37,768 psi | 85% | 1296 fps | 100% |
| Lovex D036² | <<locked>> | 72% | 37,565 psi | 85% | 1371 fps | 95.3% |
| Lovex S011² | <<locked>> | 76% | 36,579 psi | 83% | 1230 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 39,552 psi | 89% | 1325 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 38,725 psi | 88% | 1283 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 37,768 psi | 85% | 1286 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 37,086 psi | 84% | 1243 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 36,187 psi | 82% | 1211 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 37,956 psi | 86% | 1181 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 38,986 psi | 88% | 1355 fps | 100% |
| Ramshot True Blue² | <<locked>> | 72% | 36,114 psi | 82% | 1332 fps | 97.9% |
| Ramshot Zip² | <<locked>> | 68% | 38,725 psi | 88% | 1276 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 38,957 psi | 88% | 1283 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,284 psi | 26% | 814 fps | 99.4% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 38,986 psi | 88% | 1365 fps | 100% |
| ReloadSwiss RS 24*ᴾ | <<locked>> | 100% | 39,711 psi | 90% | 1427 fps | 87.1% |
| Rottweil P 801 | <<locked>> | 80% | 39,827 psi | 90% | 1253 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 31,517 psi | 71% | 1381 fps | 95.7% |
| Shooters World Auto Pistol² | <<locked>> | 72% | 37,565 psi | 85% | 1371 fps | 95.3% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 38,972 psi | 88% | 1312 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 38,711 psi | 88% | 1266 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 37,449 psi | 85% | 1270 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 37,507 psi | 85% | 1135 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 34,040 psi | 77% | 1293 fps | 96.8% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 38,943 psi | 88% | 1296 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 38,101 psi | 86% | 1440 fps | 94.9% |
| Somchem MP200 | <<locked>> | 88% | 37,942 psi | 86% | 1339 fps | 100% |
| Somchem MS200 | <<locked>> | 92% | 37,173 psi | 84% | 1309 fps | 100% |
| Somchem S221* | <<locked>> | 84% | 39,856 psi | 90% | 1407 fps | 90.7% |
| Vihtavuori 3N37 | <<locked>> | 96% | 37,115 psi | 84% | 1362 fps | 98.4% |
| Vihtavuori N310² | <<locked>> | 68% | 36,013 psi | 81% | 1125 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 36,071 psi | 82% | 1217 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 22,931 psi | 52% | 1001 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 38,421 psi | 87% | 1302 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 37,188 psi | 84% | 1309 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 35,781 psi | 81% | 1339 fps | 98.4% |
| Winchester 231² | <<locked>> | 76% | 38,725 psi | 88% | 1276 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 38,072 psi | 86% | 1260 fps | 100% |
| Winchester 572² | <<locked>> | 68% | 39,697 psi | 90% | 1391 fps | 98.3% |
| Winchester AutoComp | <<locked>> | 96% | 37,681 psi | 85% | 1293 fps | 100% |
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 17,550 psi | 40% | 978 fps | 92.7% |
| Accurate No. 5*² | <<locked>> | 60% | 25,280 psi | 57% | 1181 fps | 89.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,724 psi | 42% | 955 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,055 psi | 34% | 922 fps | 98.4% |
| ADI AP 100* | <<locked>> | 92% | 22,916 psi | 52% | 1135 fps | 85.2% |
| ADI AP 70N² | <<locked>> | 60% | 22,147 psi | 50% | 1079 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 21,582 psi | 49% | 909 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,421 psi | 46% | 922 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,116 psi | 43% | 942 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,696 psi | 45% | 988 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,273 psi | 35% | 932 fps | 99.7% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,320 psi | 46% | 1066 fps | 97.8% |
| Alliant Green Dot² | <<locked>> | 60% | 18,637 psi | 42% | 968 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,008 psi | 25% | 830 fps | 87.8% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 25,527 psi | 58% | 1220 fps | 86.3% |
| Alliant RED DOT² | <<locked>> | 60% | 18,362 psi | 42% | 945 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,931 psi | 52% | 1119 fps | 98.3% |
| Alliant UNIQUE*² | <<locked>> | 60% | 14,910 psi | 34% | 948 fps | 93% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,216 psi | 39% | 938 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,805 psi | 24% | 814 fps | 99.4% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,086 psi | 41% | 988 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 28,456 psi | 64% | 1181 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 16,795 psi | 38% | 860 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 30,632 psi | 69% | 1175 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 20,827 psi | 47% | 1089 fps | 88.5% |
| Hodgdon Longshot*² | <<locked>> | 60% | 22,974 psi | 52% | 1132 fps | 92.3% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 5,773 psi | 13% | 591 fps | 95.7% |
| Hodgdon Universal² | <<locked>> | 60% | 18,072 psi | 41% | 1001 fps | 99.8% |
| Lovex D036*² | <<locked>> | 60% | 25,280 psi | 57% | 1181 fps | 89.3% |
| Lovex S011² | <<locked>> | 60% | 23,902 psi | 54% | 1066 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,521 psi | 40% | 1001 fps | 97.4% |
| Maxam CSB 1² | <<locked>> | 60% | 14,460 psi | 33% | 906 fps | 98% |
| Maxam CSB 2² | <<locked>> | 60% | 14,547 psi | 33% | 942 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 16,911 psi | 38% | 948 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 18,231 psi | 41% | 961 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 21,263 psi | 48% | 974 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 21,074 psi | 48% | 1086 fps | 95.7% |
| Ramshot True Blue*² | <<locked>> | 60% | 24,221 psi | 55% | 1152 fps | 93.2% |
| Ramshot Zip² | <<locked>> | 60% | 29,443 psi | 67% | 1168 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,624 psi | 44% | 1030 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,598 psi | 13% | 587 fps | 90.5% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,256 psi | 30% | 925 fps | 93.6% |
| ReloadSwiss RS 24* | <<locked>> | 96% | 35,375 psi | 80% | 1368 fps | 85.1% |
| Rottweil P 801² | <<locked>> | 60% | 23,148 psi | 52% | 1056 fps | 100% |
| Rottweil P 806* | <<locked>> | 84% | 18,289 psi | 41% | 1142 fps | 86.9% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,280 psi | 57% | 1181 fps | 89.3% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,504 psi | 33% | 906 fps | 92.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,840 psi | 43% | 991 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 18,028 psi | 41% | 981 fps | 98.6% |
| SNPE Vectan BA10² | <<locked>> | 60% | 23,424 psi | 53% | 968 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 17,042 psi | 39% | 991 fps | 86.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 17,564 psi | 40% | 981 fps | 99.3% |
| SNPE Vectan SP 2*² | <<locked>> | 76% | 23,685 psi | 54% | 1211 fps | 87.4% |
| Somchem MP200*² | <<locked>> | 60% | 17,289 psi | 39% | 997 fps | 93.9% |
| Somchem MS200² | <<locked>> | 60% | 16,317 psi | 37% | 961 fps | 95.4% |
| Somchem S221*² | <<locked>> | 76% | 30,995 psi | 70% | 1286 fps | 86.6% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 15,011 psi | 34% | 968 fps | 85.3% |
| Vihtavuori N310² | <<locked>> | 60% | 29,124 psi | 66% | 1053 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 18,376 psi | 42% | 978 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,340 psi | 21% | 732 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 16,679 psi | 38% | 991 fps | 99.8% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,040 psi | 34% | 938 fps | 93.6% |
| Vihtavuori N350*² | <<locked>> | 72% | 16,694 psi | 38% | 1007 fps | 87.8% |
| Winchester 231² | <<locked>> | 60% | 24,555 psi | 56% | 1096 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 33,243 psi | 75% | 1204 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 29,965 psi | 68% | 1257 fps | 95.4% |
| Winchester AutoComp ² | <<locked>> | 60% | 14,620 psi | 33% | 922 fps | 97.2% |
* 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 67 powders for .357 SIG loaded with the .355 | 125gr | Speer Hollow Point Gold Dot. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,440 fps; across all powders the maximum-charge window runs from 814 fps to 1,440 fps. ADI AP 100 gives the best case fill at 100 %, and 52 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 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. As outliers, ADI AP 100, Alliant POWER PISTOL, ReloadSwiss RS 24 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.