Load Specifications
Load data in caliber .357 SIG with .355 | 124gr | Remington BJHP bullet and 66 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 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% | 38,870 psi | 88% | 1309 fps | 99.9% |
| Accurate No. 5² | <<locked>> | 72% | 37,797 psi | 85% | 1378 fps | 95.2% |
| Accurate Solo 1000 | <<locked>> | 92% | 39,929 psi | 90% | 1240 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 37,840 psi | 86% | 1280 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 26,890 psi | 61% | 1211 fps | 87.9% |
| ADI AP 70N | <<locked>> | 80% | 37,840 psi | 86% | 1302 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 38,058 psi | 86% | 1109 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,102 psi | 88% | 1155 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 39,842 psi | 90% | 1214 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 39,653 psi | 90% | 1260 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 36,535 psi | 83% | 1260 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 38,159 psi | 86% | 1348 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 39,001 psi | 88% | 1257 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 28,311 psi | 64% | 1224 fps | 99.7% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 38,058 psi | 86% | 1424 fps | 92.8% |
| Alliant RED DOT | <<locked>> | 92% | 37,507 psi | 85% | 1211 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 38,972 psi | 88% | 1362 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 36,811 psi | 83% | 1345 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 39,900 psi | 90% | 1247 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 29,022 psi | 66% | 1152 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 36,303 psi | 82% | 1237 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 35,882 psi | 81% | 1280 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 39,827 psi | 90% | 1161 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 39,030 psi | 88% | 1276 fps | 100% |
| Hodgdon HS-6 | <<locked>> | 80% | 39,726 psi | 90% | 1388 fps | 97.4% |
| Hodgdon Longshot² | <<locked>> | 76% | 38,870 psi | 88% | 1378 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,357 psi | 28% | 823 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 37,840 psi | 86% | 1302 fps | 100% |
| Lovex D036² | <<locked>> | 72% | 37,739 psi | 85% | 1378 fps | 95.1% |
| Lovex S011² | <<locked>> | 76% | 36,724 psi | 83% | 1234 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 39,755 psi | 90% | 1332 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 37,695 psi | 85% | 1276 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 37,797 psi | 85% | 1293 fps | 100% |
| Maxam CSB 3 | <<locked>> | 96% | 39,842 psi | 90% | 1276 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 36,390 psi | 82% | 1217 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 38,174 psi | 86% | 1188 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 39,160 psi | 89% | 1362 fps | 100% |
| Ramshot True Blue² | <<locked>> | 72% | 36,289 psi | 82% | 1339 fps | 97.9% |
| Ramshot Zip² | <<locked>> | 68% | 37,623 psi | 85% | 1270 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 37,768 psi | 85% | 1276 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,805 psi | 24% | 804 fps | 99% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 39,131 psi | 88% | 1371 fps | 100% |
| Rottweil P 801 | <<locked>> | 80% | 39,987 psi | 90% | 1260 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 30,574 psi | 69% | 1371 fps | 95.2% |
| Shooters World Auto Pistol² | <<locked>> | 72% | 37,739 psi | 85% | 1378 fps | 95.1% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 39,131 psi | 88% | 1319 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 37,681 psi | 85% | 1260 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 36,448 psi | 82% | 1263 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 37,739 psi | 85% | 1142 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 34,113 psi | 77% | 1299 fps | 96.7% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 39,102 psi | 88% | 1302 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 38,189 psi | 86% | 1447 fps | 94.8% |
| Somchem MP200 | <<locked>> | 88% | 36,941 psi | 84% | 1329 fps | 100% |
| Somchem MS200 | <<locked>> | 96% | 39,740 psi | 90% | 1339 fps | 100% |
| Somchem S221* | <<locked>> | 84% | 39,001 psi | 88% | 1401 fps | 90.1% |
| Vihtavuori 3N37 | <<locked>> | 96% | 37,304 psi | 84% | 1368 fps | 98.4% |
| Vihtavuori N310² | <<locked>> | 68% | 36,158 psi | 82% | 1132 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 39,001 psi | 88% | 1253 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 22,960 psi | 52% | 1004 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 38,566 psi | 87% | 1309 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 36,100 psi | 82% | 1299 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 34,838 psi | 79% | 1329 fps | 98% |
| Winchester 231² | <<locked>> | 76% | 38,870 psi | 88% | 1283 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 38,218 psi | 86% | 1266 fps | 100% |
| Winchester 572² | <<locked>> | 68% | 38,653 psi | 87% | 1381 fps | 97.9% |
| Winchester AutoComp | <<locked>> | 96% | 37,869 psi | 86% | 1299 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% | 16,795 psi | 38% | 961 fps | 91.8% |
| Accurate No. 5*² | <<locked>> | 60% | 24,555 psi | 56% | 1171 fps | 88.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,782 psi | 42% | 958 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,055 psi | 34% | 925 fps | 98.2% |
| ADI AP 100* | <<locked>> | 96% | 24,453 psi | 55% | 1168 fps | 86.2% |
| ADI AP 70N² | <<locked>> | 60% | 21,306 psi | 48% | 1066 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 21,669 psi | 49% | 912 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,479 psi | 46% | 925 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,160 psi | 43% | 945 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,769 psi | 45% | 991 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,316 psi | 35% | 935 fps | 99.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 19,551 psi | 44% | 1053 fps | 97.2% |
| Alliant Green Dot² | <<locked>> | 60% | 17,840 psi | 40% | 958 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,037 psi | 25% | 833 fps | 87.6% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 24,787 psi | 56% | 1207 fps | 85.4% |
| Alliant RED DOT² | <<locked>> | 60% | 18,362 psi | 42% | 948 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,118 psi | 50% | 1106 fps | 97.9% |
| Alliant UNIQUE*² | 4.2 gr | 60% | 14,910 psi | 34% | 951 fps | 92.8% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,245 psi | 39% | 942 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,312 psi | 23% | 801 fps | 99.1% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,115 psi | 41% | 991 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 27,586 psi | 62% | 1175 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 16,853 psi | 38% | 863 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 30,748 psi | 70% | 1181 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 20,885 psi | 47% | 1093 fps | 88.3% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,032 psi | 52% | 1138 fps | 92.2% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 5,773 psi | 13% | 591 fps | 95.5% |
| Hodgdon Universal² | <<locked>> | 60% | 18,086 psi | 41% | 1004 fps | 99.7% |
| Lovex D036*² | <<locked>> | 60% | 24,555 psi | 56% | 1171 fps | 88.6% |
| Lovex S011² | <<locked>> | 60% | 22,989 psi | 52% | 1056 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 16,824 psi | 38% | 988 fps | 96.8% |
| Maxam CSB 1² | <<locked>> | 60% | 14,504 psi | 33% | 909 fps | 97.9% |
| Maxam CSB 2² | <<locked>> | 60% | 14,533 psi | 33% | 942 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 16,969 psi | 38% | 955 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 18,231 psi | 41% | 965 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,262 psi | 46% | 961 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 21,118 psi | 48% | 1093 fps | 95.6% |
| Ramshot True Blue*² | <<locked>> | 60% | 23,496 psi | 53% | 1142 fps | 92.5% |
| Ramshot Zip² | <<locked>> | 60% | 29,544 psi | 67% | 1175 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,667 psi | 44% | 1033 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,323 psi | 12% | 574 fps | 89.4% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,256 psi | 30% | 928 fps | 93.4% |
| Rottweil P 801² | <<locked>> | 60% | 23,177 psi | 52% | 1060 fps | 100% |
| Rottweil P 806* | <<locked>> | 84% | 17,709 psi | 40% | 1132 fps | 86% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 24,555 psi | 56% | 1171 fps | 88.6% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,533 psi | 33% | 909 fps | 92.2% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,115 psi | 41% | 978 fps | 99.9% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,376 psi | 39% | 968 fps | 98.2% |
| SNPE Vectan BA10² | <<locked>> | 60% | 23,525 psi | 53% | 971 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 16,505 psi | 37% | 981 fps | 85.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,882 psi | 38% | 968 fps | 98.9% |
| SNPE Vectan SP 2*² | <<locked>> | 76% | 22,887 psi | 52% | 1201 fps | 86.5% |
| Somchem MP200*² | <<locked>> | 60% | 17,332 psi | 39% | 1001 fps | 93.7% |
| Somchem MS200² | <<locked>> | 60% | 16,331 psi | 37% | 965 fps | 95.3% |
| Somchem S221*² | <<locked>> | 76% | 30,269 psi | 68% | 1276 fps | 85.9% |
| Vihtavuori 3N37*² | 5.5 gr | 64% | 15,055 psi | 34% | 971 fps | 85.1% |
| Vihtavuori N310² | <<locked>> | 60% | 29,211 psi | 66% | 1056 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 18,376 psi | 42% | 984 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,340 psi | 21% | 735 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 16,679 psi | 38% | 994 fps | 99.8% |
| Vihtavuori N340*² | 4.4 gr | 60% | 15,084 psi | 34% | 942 fps | 93.5% |
| Vihtavuori N350*² | <<locked>> | 72% | 16,099 psi | 36% | 997 fps | 86.9% |
| Winchester 231² | <<locked>> | 60% | 23,656 psi | 53% | 1089 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 33,359 psi | 75% | 1211 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 29,037 psi | 66% | 1247 fps | 94.8% |
| Winchester AutoComp ² | <<locked>> | 60% | 14,649 psi | 33% | 925 fps | 97.1% |
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 66 powders for .357 SIG loaded with the .355 | 124gr | Remington BJHP. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,447 fps; across all powders the maximum-charge window runs from 804 fps to 1,447 fps. ADI AP 100 gives the best case fill at 100 %, and 53 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 24–90 %, 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. Vihtavuori 3N37, Alliant UNIQUE, Vihtavuori N340 rank at the top here: for .357 SIG with the .355 | 124gr | Remington BJHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100, Alliant POWER PISTOL, SNPE Vectan SP 2 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.