Load Specifications
Bullet Manufacturer:X-TREME
Bullet Weight:124 gr
Bullet Diameter:0.355"
Bullet Length:<<locked>>
Caliber:.357 SIG load data
Case Length (l3):0.86"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:19.5 Grains of Water
Primer Size:Small Pistol (SP)
Barrel Length:4.5"
Max. allowed Pressure:44,236 psi
Load data in caliber .357 SIG with .355 | 124gr | X-TREME RN HPCB bullet and 132 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori 3N37, Alliant UNIQUE and Somchem MP200.
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>> | 88% | 39,726 psi | 90% | 1299 fps | 99.9% |
| Accurate No. 2 | <<locked>> | 84% | 37,014 psi | 84% | 1273 fps | 99.7% |
| Accurate No. 5² | <<locked>> | 72% | 38,305 psi | 87% | 1365 fps | 95% |
| Accurate No. 5² | <<locked>> | 72% | 39,334 psi | 89% | 1385 fps | 95.5% |
| Accurate Solo 1000 | <<locked>> | 88% | 37,623 psi | 85% | 1201 fps | 100% |
| Accurate Solo 1000 | <<locked>> | 88% | 37,985 psi | 86% | 1211 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 38,885 psi | 88% | 1273 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 36,564 psi | 83% | 1253 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 28,326 psi | 64% | 1214 fps | 88.3% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 28,456 psi | 64% | 1224 fps | 88.7% |
| ADI AP 70N | <<locked>> | 80% | 39,682 psi | 90% | 1299 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 39,871 psi | 90% | 1306 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 37,898 psi | 86% | 1093 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 38,435 psi | 87% | 1102 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,175 psi | 89% | 1142 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,581 psi | 89% | 1148 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 38,000 psi | 86% | 1175 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 38,334 psi | 87% | 1181 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 36,724 psi | 83% | 1207 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 37,101 psi | 84% | 1217 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 38,043 psi | 86% | 1257 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 38,189 psi | 86% | 1263 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 38,972 psi | 88% | 1339 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 39,218 psi | 89% | 1348 fps | 100% |
| Alliant Green Dot | <<locked>> | 88% | 37,507 psi | 85% | 1220 fps | 100% |
| Alliant Green Dot | <<locked>> | 88% | 37,840 psi | 86% | 1227 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 30,168 psi | 68% | 1227 fps | 99.8% |
| Alliant Hercoᴾ | <<locked>> | 100% | 30,269 psi | 68% | 1234 fps | 99.8% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 38,711 psi | 88% | 1414 fps | 92.6% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 39,914 psi | 90% | 1437 fps | 93.3% |
| Alliant RED DOT | <<locked>> | 92% | 38,319 psi | 87% | 1201 fps | 100% |
| Alliant RED DOT | <<locked>> | 92% | 38,827 psi | 88% | 1207 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 39,856 psi | 90% | 1352 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 36,448 psi | 82% | 1316 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 38,580 psi | 87% | 1342 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 38,711 psi | 88% | 1348 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 36,724 psi | 83% | 1198 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 36,999 psi | 84% | 1204 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 30,458 psi | 69% | 1148 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 30,690 psi | 69% | 1155 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 38,159 psi | 86% | 1240 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 38,203 psi | 86% | 1243 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 37,449 psi | 85% | 1276 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 37,536 psi | 85% | 1283 fps | 100% |
| Hodgdon Clays | <<locked>> | 96% | 37,391 psi | 85% | 1122 fps | 100% |
| Hodgdon Clays | <<locked>> | 96% | 37,782 psi | 85% | 1129 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 35,056 psi | 79% | 1214 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 35,418 psi | 80% | 1224 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 36,071 psi | 82% | 1319 fps | 96.1% |
| Hodgdon HS-6² | <<locked>> | 76% | 37,115 psi | 84% | 1339 fps | 96.5% |
| Hodgdon Longshot² | <<locked>> | 76% | 39,653 psi | 90% | 1365 fps | 98.4% |
| Hodgdon Longshot² | <<locked>> | 72% | 36,289 psi | 82% | 1329 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 13,634 psi | 31% | 820 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 13,967 psi | 32% | 833 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 38,348 psi | 87% | 1283 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 39,871 psi | 90% | 1306 fps | 100% |
| Lovex D036*² | <<locked>> | 72% | 38,247 psi | 86% | 1365 fps | 94.9% |
| Lovex D036² | <<locked>> | 72% | 39,262 psi | 89% | 1385 fps | 95.5% |
| Lovex S011² | <<locked>> | 76% | 37,275 psi | 84% | 1224 fps | 100% |
| Lovex S011² | <<locked>> | 76% | 37,623 psi | 85% | 1234 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 39,856 psi | 90% | 1312 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 37,391 psi | 85% | 1293 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 38,856 psi | 88% | 1270 fps | 100% |
| Maxam CSB 1 | <<locked>> | 96% | 36,579 psi | 83% | 1250 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 38,334 psi | 87% | 1276 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 39,987 psi | 90% | 1296 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 38,130 psi | 86% | 1240 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 38,363 psi | 87% | 1247 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 37,043 psi | 84% | 1207 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 37,405 psi | 85% | 1217 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 38,566 psi | 87% | 1171 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 39,059 psi | 88% | 1181 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 39,494 psi | 89% | 1348 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 36,172 psi | 82% | 1316 fps | 99.8% |
| Ramshot True Blue² | <<locked>> | 72% | 36,956 psi | 84% | 1325 fps | 97.8% |
| Ramshot True Blue² | <<locked>> | 72% | 36,869 psi | 83% | 1332 fps | 97.9% |
| Ramshot Zip² | <<locked>> | 68% | 38,769 psi | 88% | 1263 fps | 100% |
| Ramshot Zip² | <<locked>> | 68% | 38,957 psi | 88% | 1270 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 39,697 psi | 90% | 1273 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 39,972 psi | 90% | 1280 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 12,850 psi | 29% | 823 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,184 psi | 30% | 837 fps | 99.9% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 36,767 psi | 83% | 1325 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 36,985 psi | 84% | 1332 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 37,942 psi | 86% | 1217 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 38,174 psi | 86% | 1224 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 32,155 psi | 73% | 1375 fps | 95.5% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 32,793 psi | 74% | 1388 fps | 95.9% |
| Shooters World Auto Pistol*² | <<locked>> | 72% | 38,247 psi | 86% | 1365 fps | 94.9% |
| Shooters World Auto Pistol² | <<locked>> | 72% | 39,262 psi | 89% | 1385 fps | 95.5% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 39,073 psi | 88% | 1299 fps | 100% |
| SNPE Vectan A0 | <<locked>> | 96% | 36,840 psi | 83% | 1280 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 38,682 psi | 87% | 1253 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 38,899 psi | 88% | 1260 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 37,420 psi | 85% | 1257 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 37,637 psi | 85% | 1263 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 37,797 psi | 85% | 1129 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 38,218 psi | 86% | 1135 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 34,896 psi | 79% | 1289 fps | 96.6% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 35,882 psi | 81% | 1306 fps | 97.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 36,724 psi | 83% | 1257 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 36,898 psi | 83% | 1266 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 39,508 psi | 89% | 1444 fps | 94.9% |
| SNPE Vectan SP 2 | <<locked>> | 92% | 39,537 psi | 89% | 1447 fps | 95.1% |
| Somchem MP200 | <<locked>> | 88% | 38,595 psi | 87% | 1329 fps | 100% |
| Somchem MP200 | <<locked>> | 88% | 38,725 psi | 88% | 1335 fps | 100% |
| Somchem MS200 | <<locked>> | 92% | 37,420 psi | 85% | 1293 fps | 100% |
| Somchem MS200 | <<locked>> | 92% | 37,666 psi | 85% | 1302 fps | 100% |
| Somchem S221* | <<locked>> | 80% | 36,463 psi | 82% | 1345 fps | 88.6% |
| Somchem S221* | <<locked>> | 80% | 37,391 psi | 85% | 1365 fps | 89.3% |
| Vihtavuori 3N37 | <<locked>> | 96% | 38,043 psi | 86% | 1355 fps | 98.3% |
| Vihtavuori 3N37 | <<locked>> | 96% | 39,146 psi | 88% | 1375 fps | 98.6% |
| Vihtavuori N310² | <<locked>> | 68% | 38,087 psi | 86% | 1132 fps | 100% |
| Vihtavuori N310² | <<locked>> | 68% | 37,159 psi | 84% | 1129 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 37,159 psi | 84% | 1214 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 37,608 psi | 85% | 1224 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 24,424 psi | 55% | 1001 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 24,758 psi | 56% | 1007 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 38,508 psi | 87% | 1289 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 36,216 psi | 82% | 1270 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 37,507 psi | 85% | 1296 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 37,637 psi | 85% | 1302 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 35,375 psi | 80% | 1316 fps | 97.9% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 36,506 psi | 83% | 1335 fps | 98.3% |
| Winchester 231² | <<locked>> | 76% | 38,769 psi | 88% | 1263 fps | 100% |
| Winchester 231² | <<locked>> | 72% | 35,288 psi | 80% | 1230 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 39,334 psi | 89% | 1257 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 39,537 psi | 89% | 1263 fps | 100% |
| Winchester 572² | <<locked>> | 64% | 34,606 psi | 78% | 1309 fps | 96.6% |
| Winchester 572² | <<locked>> | 64% | 35,679 psi | 81% | 1329 fps | 97.1% |
| Winchester AutoComp | <<locked>> | 96% | 38,435 psi | 87% | 1286 fps | 100% |
| Winchester AutoComp | <<locked>> | 96% | 39,668 psi | 90% | 1302 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% | 18,260 psi | 41% | 974 fps | 92.8% |
| Accurate No. 2*² | <<locked>> | 60% | 18,594 psi | 42% | 984 fps | 93.2% |
| Accurate No. 5*² | <<locked>> | 60% | 25,860 psi | 58% | 1175 fps | 89.1% |
| Accurate No. 5*² | <<locked>> | 60% | 26,005 psi | 59% | 1181 fps | 89.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 19,943 psi | 45% | 961 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 20,421 psi | 46% | 971 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 16,621 psi | 38% | 938 fps | 98.9% |
| Accurate Solo 1250² | <<locked>> | 60% | 16,230 psi | 37% | 935 fps | 98.8% |
| ADI AP 100* | <<locked>> | 92% | 23,699 psi | 54% | 1129 fps | 85.1% |
| ADI AP 100* | <<locked>> | 92% | 23,801 psi | 54% | 1138 fps | 85.4% |
| ADI AP 70N² | <<locked>> | 60% | 23,525 psi | 53% | 1083 fps | 100% |
| ADI AP 70N² | <<locked>> | 60% | 23,902 psi | 54% | 1093 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 22,524 psi | 51% | 909 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 23,177 psi | 52% | 922 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 21,451 psi | 48% | 925 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 21,959 psi | 50% | 935 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 20,726 psi | 47% | 948 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 20,305 psi | 46% | 945 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 21,437 psi | 48% | 997 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 21,016 psi | 48% | 994 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 17,158 psi | 39% | 951 fps | 99.9% |
| Alliant BE-86² | <<locked>> | 60% | 16,766 psi | 38% | 948 fps | 99.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,972 psi | 47% | 1060 fps | 97.8% |
| Alliant BULLSEYE² | <<locked>> | 60% | 21,379 psi | 48% | 1073 fps | 98% |
| Alliant Green Dot² | <<locked>> | 60% | 19,450 psi | 44% | 965 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 19,972 psi | 45% | 974 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 12,865 psi | 29% | 860 fps | 90.2% |
| Alliant Herco*² | <<locked>> | 60% | 12,633 psi | 29% | 856 fps | 90.1% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 26,324 psi | 60% | 1217 fps | 86.2% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 26,440 psi | 60% | 1224 fps | 86.5% |
| Alliant RED DOT² | <<locked>> | 60% | 19,058 psi | 43% | 935 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 19,595 psi | 44% | 948 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 23,728 psi | 54% | 1115 fps | 98.3% |
| Alliant Sport Pistol² | <<locked>> | 60% | 24,018 psi | 54% | 1125 fps | 98.5% |
| Alliant UNIQUE*² | 4.1 gr | 60% | 16,781 psi | 38% | 971 fps | 94.4% |
| Alliant UNIQUE*² | 4.1 gr | 60% | 16,476 psi | 37% | 968 fps | 94.2% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 18,855 psi | 43% | 951 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 18,463 psi | 42% | 945 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 12,038 psi | 27% | 823 fps | 99.8% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 12,328 psi | 28% | 833 fps | 99.9% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 19,537 psi | 44% | 994 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 19,769 psi | 45% | 1001 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 29,051 psi | 66% | 1175 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 29,240 psi | 66% | 1181 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 17,811 psi | 40% | 860 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 18,347 psi | 41% | 873 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 31,618 psi | 71% | 1175 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 31,981 psi | 72% | 1181 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 21,625 psi | 49% | 1086 fps | 88.5% |
| Hodgdon HS-6*² | <<locked>> | 60% | 22,408 psi | 51% | 1106 fps | 89.3% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,670 psi | 54% | 1129 fps | 92.2% |
| Hodgdon Longshot*² | <<locked>> | 60% | 24,598 psi | 56% | 1148 fps | 93% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,368 psi | 17% | 614 fps | 98.4% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,629 psi | 17% | 627 fps | 98.7% |
| Hodgdon Universal² | <<locked>> | 60% | 20,160 psi | 46% | 1020 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 19,783 psi | 45% | 1014 fps | 100% |
| Lovex D036*² | <<locked>> | 60% | 25,875 psi | 58% | 1175 fps | 89.1% |
| Lovex D036*² | <<locked>> | 60% | 25,962 psi | 59% | 1181 fps | 89.4% |
| Lovex S011² | <<locked>> | 60% | 24,410 psi | 55% | 1060 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 24,874 psi | 56% | 1070 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 18,739 psi | 42% | 1004 fps | 97.8% |
| Lovex S020² | <<locked>> | 60% | 19,102 psi | 43% | 1014 fps | 98% |
| Maxam CSB 1² | <<locked>> | 60% | 15,403 psi | 35% | 906 fps | 98.3% |
| Maxam CSB 1² | <<locked>> | 60% | 15,751 psi | 36% | 915 fps | 98.6% |
| Maxam CSB 2² | <<locked>> | 60% | 15,969 psi | 36% | 945 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 16,389 psi | 37% | 958 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 17,651 psi | 40% | 945 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 18,130 psi | 41% | 958 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 19,696 psi | 45% | 968 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 19,290 psi | 44% | 965 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 21,640 psi | 49% | 961 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 22,176 psi | 50% | 974 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 22,278 psi | 50% | 1093 fps | 96% |
| Ramshot Silhouette² | <<locked>> | 60% | 22,553 psi | 51% | 1102 fps | 96.3% |
| Ramshot True Blue*² | <<locked>> | 60% | 24,889 psi | 56% | 1145 fps | 93% |
| Ramshot True Blue*² | <<locked>> | 60% | 25,048 psi | 57% | 1152 fps | 93.3% |
| Ramshot Zip² | <<locked>> | 60% | 30,516 psi | 69% | 1165 fps | 100% |
| Ramshot Zip² | <<locked>> | 60% | 30,792 psi | 70% | 1175 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 21,263 psi | 48% | 1033 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 21,683 psi | 49% | 1043 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 7,310 psi | 17% | 620 fps | 94.8% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 7,252 psi | 16% | 617 fps | 94.9% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 14,344 psi | 32% | 932 fps | 94.4% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 14,634 psi | 33% | 945 fps | 94.9% |
| Rottweil P 801² | <<locked>> | 60% | 24,685 psi | 56% | 1056 fps | 100% |
| Rottweil P 801² | <<locked>> | 60% | 25,092 psi | 57% | 1063 fps | 100% |
| Rottweil P 806* | <<locked>> | 80% | 17,622 psi | 40% | 1106 fps | 85.5% |
| Rottweil P 806* | <<locked>> | 80% | 18,275 psi | 41% | 1122 fps | 86.4% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,875 psi | 58% | 1175 fps | 89.1% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,962 psi | 59% | 1181 fps | 89.4% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,345 psi | 35% | 906 fps | 92.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,664 psi | 35% | 915 fps | 93.2% |
| SNPE Vectan A1² | <<locked>> | 60% | 19,638 psi | 44% | 988 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 19,943 psi | 45% | 997 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 18,797 psi | 42% | 978 fps | 98.7% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 19,087 psi | 43% | 988 fps | 98.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 23,482 psi | 53% | 955 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 24,033 psi | 54% | 965 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 18,347 psi | 41% | 1001 fps | 87% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 18,550 psi | 42% | 1010 fps | 87.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 18,507 psi | 42% | 981 fps | 99.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 18,884 psi | 43% | 991 fps | 99.6% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 21,915 psi | 50% | 1155 fps | 85.2% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 22,829 psi | 52% | 1178 fps | 86.2% |
| Somchem MP200*² | 4.7 gr | 60% | 18,507 psi | 42% | 1004 fps | 94.4% |
| Somchem MP200*² | 4.7 gr | 60% | 18,811 psi | 43% | 1014 fps | 94.8% |
| Somchem MS200² | <<locked>> | 60% | 17,289 psi | 39% | 961 fps | 95.8% |
| Somchem MS200² | <<locked>> | 60% | 17,608 psi | 40% | 974 fps | 96.2% |
| Somchem S221*² | <<locked>> | 76% | 31,792 psi | 72% | 1276 fps | 86.2% |
| Somchem S221*² | <<locked>> | 72% | 29,341 psi | 66% | 1243 fps | 85.1% |
| Vihtavuori 3N37*² | 5.4 gr | 64% | 16,404 psi | 37% | 981 fps | 86.4% |
| Vihtavuori 3N37*² | 5.4 gr | 64% | 16,621 psi | 38% | 991 fps | 86.9% |
| Vihtavuori N310² | <<locked>> | 60% | 29,559 psi | 67% | 1040 fps | 100% |
| Vihtavuori N310² | <<locked>> | 60% | 30,211 psi | 68% | 1053 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 20,102 psi | 45% | 991 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 19,740 psi | 45% | 988 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,139 psi | 25% | 748 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,008 psi | 25% | 748 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 18,478 psi | 42% | 1010 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 18,115 psi | 41% | 1004 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 16,839 psi | 38% | 961 fps | 94.8% |
| Vihtavuori N340*² | <<locked>> | 60% | 16,462 psi | 37% | 955 fps | 94.6% |
| Vihtavuori N350*² | <<locked>> | 68% | 15,635 psi | 35% | 961 fps | 85.9% |
| Vihtavuori N350*² | <<locked>> | 68% | 15,838 psi | 36% | 968 fps | 86.4% |
| Winchester 231² | <<locked>> | 60% | 25,527 psi | 58% | 1096 fps | 100% |
| Winchester 231² | <<locked>> | 60% | 25,788 psi | 58% | 1102 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 34,301 psi | 78% | 1201 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 34,606 psi | 78% | 1211 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 30,414 psi | 69% | 1247 fps | 95% |
| Winchester 572² | <<locked>> | 60% | 30,603 psi | 69% | 1257 fps | 95.3% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,983 psi | 36% | 932 fps | 97.8% |
| Winchester AutoComp ² | <<locked>> | 60% | 16,259 psi | 37% | 942 fps | 98% |
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 132 powders for .357 SIG loaded with the .355 | 124gr | X-TREME RN HPCB. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,447 fps; across all powders the maximum-charge window runs from 820 fps to 1,447 fps. ADI AP 100 gives the best case fill at 100 %, and 100 of the 132 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 29–90 %, leaving at least 10 % headroom. ADI AP 100, ADI AP 100, Alliant Herco 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. Vihtavuori 3N37, Alliant UNIQUE, Somchem MP200 rank at the top here: for .357 SIG with the .355 | 124gr | X-TREME RN HPCB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100, ADI AP 100, Alliant POWER PISTOL burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate No. 2, Accurate Solo 1000 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.