Load Specifications
Load data in caliber .357 SIG with .355 | 125gr | Sierra Sig V-Crown bullet and 66 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.
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Max Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 84% | 36,550 psi | 83% | 1286 fps | 99.8% |
| Accurate No. 5² | <<locked>> | 72% | 38,986 psi | 88% | 1401 fps | 96% |
| Accurate Solo 1000 | <<locked>> | 88% | 38,130 psi | 86% | 1227 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 39,943 psi | 90% | 1302 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 27,978 psi | 63% | 1234 fps | 89.1% |
| ADI AP 70N | <<locked>> | 80% | 38,682 psi | 87% | 1312 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 37,826 psi | 86% | 1109 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,943 psi | 90% | 1165 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 36,869 psi | 83% | 1184 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 36,695 psi | 83% | 1230 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 38,116 psi | 86% | 1276 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 38,943 psi | 88% | 1362 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 39,813 psi | 90% | 1266 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 29,646 psi | 67% | 1247 fps | 99.9% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 39,305 psi | 89% | 1447 fps | 93.7% |
| Alliant RED DOT | <<locked>> | 92% | 38,595 psi | 87% | 1227 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 35,998 psi | 81% | 1329 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 38,624 psi | 87% | 1368 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 36,637 psi | 83% | 1217 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 29,544 psi | 67% | 1158 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 38,566 psi | 87% | 1263 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 37,536 psi | 85% | 1302 fps | 100% |
| Hodgdon Clays | <<locked>> | 96% | 38,029 psi | 86% | 1145 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 39,726 psi | 90% | 1286 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 36,448 psi | 82% | 1352 fps | 96.8% |
| Hodgdon Longshot² | <<locked>> | 72% | 35,737 psi | 81% | 1342 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,575 psi | 28% | 827 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 38,682 psi | 87% | 1312 fps | 100% |
| Lovex D036² | <<locked>> | 72% | 38,928 psi | 88% | 1398 fps | 95.9% |
| Lovex S011² | <<locked>> | 76% | 37,550 psi | 85% | 1247 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 36,361 psi | 82% | 1299 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 39,479 psi | 89% | 1296 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 38,711 psi | 88% | 1302 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 38,043 psi | 86% | 1260 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 37,304 psi | 84% | 1230 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 39,204 psi | 89% | 1198 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 36,114 psi | 82% | 1332 fps | 99.9% |
| Ramshot True Blue² | <<locked>> | 72% | 37,492 psi | 85% | 1358 fps | 98.4% |
| Ramshot Zip² | <<locked>> | 68% | 39,537 psi | 89% | 1289 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 40,001 psi | 90% | 1299 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,473 psi | 26% | 823 fps | 99.5% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 37,144 psi | 84% | 1352 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 37,072 psi | 84% | 1230 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 32,387 psi | 73% | 1401 fps | 96.3% |
| Shooters World Auto Pistol² | <<locked>> | 72% | 38,928 psi | 88% | 1398 fps | 95.9% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 39,552 psi | 89% | 1325 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 39,291 psi | 89% | 1280 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 38,101 psi | 86% | 1283 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 38,609 psi | 87% | 1152 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 35,331 psi | 80% | 1319 fps | 97.4% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 39,697 psi | 90% | 1312 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 92% | 39,552 psi | 89% | 1470 fps | 95.7% |
| Somchem MP200 | <<locked>> | 88% | 38,508 psi | 87% | 1352 fps | 100% |
| Somchem MS200 | <<locked>> | 92% | 37,840 psi | 86% | 1322 fps | 100% |
| Somchem S221* | <<locked>> | 80% | 35,737 psi | 81% | 1365 fps | 89.4% |
| Vihtavuori 3N37 | <<locked>> | 96% | 38,566 psi | 87% | 1388 fps | 98.9% |
| Vihtavuori N310² | <<locked>> | 68% | 37,507 psi | 85% | 1148 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 40,016 psi | 90% | 1266 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 23,844 psi | 54% | 1017 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 39,421 psi | 89% | 1319 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 37,898 psi | 86% | 1322 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 36,201 psi | 82% | 1352 fps | 98.6% |
| Winchester 231² | <<locked>> | 76% | 39,537 psi | 89% | 1289 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 38,914 psi | 88% | 1273 fps | 100% |
| Winchester 572² | <<locked>> | 64% | 34,577 psi | 78% | 1332 fps | 97.2% |
| Winchester AutoComp | <<locked>> | 96% | 38,087 psi | 86% | 1306 fps | 100% |
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 17,622 psi | 40% | 984 fps | 93.1% |
| Accurate No. 5*² | <<locked>> | 60% | 25,773 psi | 58% | 1198 fps | 90% |
| Accurate Solo 1000² | <<locked>> | 60% | 19,827 psi | 45% | 981 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,911 psi | 36% | 948 fps | 98.9% |
| ADI AP 100* | <<locked>> | 92% | 23,322 psi | 53% | 1152 fps | 85.9% |
| ADI AP 70N² | <<locked>> | 60% | 22,205 psi | 50% | 1086 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 21,930 psi | 50% | 919 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,682 psi | 47% | 932 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,392 psi | 44% | 951 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,943 psi | 45% | 997 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,983 psi | 36% | 955 fps | 99.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,421 psi | 46% | 1073 fps | 98% |
| Alliant Green Dot² | <<locked>> | 60% | 18,855 psi | 43% | 978 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,574 psi | 26% | 853 fps | 89% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 26,005 psi | 59% | 1237 fps | 86.9% |
| Alliant RED DOT² | <<locked>> | 60% | 18,666 psi | 42% | 955 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,960 psi | 52% | 1125 fps | 98.5% |
| Alliant UNIQUE*² | <<locked>> | 60% | 15,664 psi | 35% | 974 fps | 94% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 18,217 psi | 41% | 965 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,979 psi | 25% | 823 fps | 99.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,637 psi | 42% | 1001 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 29,167 psi | 66% | 1198 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 17,085 psi | 39% | 869 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 31,517 psi | 71% | 1194 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 21,335 psi | 48% | 1106 fps | 89.2% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,467 psi | 53% | 1148 fps | 92.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 5,990 psi | 14% | 604 fps | 96.3% |
| Hodgdon Universal² | <<locked>> | 60% | 19,000 psi | 43% | 1024 fps | 100% |
| Lovex D036*² | <<locked>> | 60% | 25,730 psi | 58% | 1198 fps | 89.9% |
| Lovex S011² | <<locked>> | 60% | 23,946 psi | 54% | 1076 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,608 psi | 40% | 1007 fps | 97.6% |
| Maxam CSB 1² | <<locked>> | 60% | 14,663 psi | 33% | 915 fps | 98.3% |
| Maxam CSB 2² | <<locked>> | 60% | 14,808 psi | 33% | 948 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 17,114 psi | 39% | 958 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 18,478 psi | 42% | 971 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 21,509 psi | 49% | 981 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 21,727 psi | 49% | 1106 fps | 96.3% |
| Ramshot True Blue*² | <<locked>> | 60% | 24,729 psi | 56% | 1165 fps | 93.7% |
| Ramshot Zip² | <<locked>> | 60% | 30,385 psi | 69% | 1188 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,870 psi | 45% | 1037 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,526 psi | 12% | 584 fps | 90.5% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,373 psi | 30% | 932 fps | 94% |
| Rottweil P 801² | <<locked>> | 60% | 24,207 psi | 55% | 1076 fps | 100% |
| Rottweil P 806* | <<locked>> | 84% | 19,102 psi | 43% | 1161 fps | 87.9% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,730 psi | 58% | 1198 fps | 89.9% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,620 psi | 33% | 912 fps | 92.7% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,855 psi | 43% | 994 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 18,101 psi | 41% | 988 fps | 98.8% |
| SNPE Vectan BA10² | <<locked>> | 60% | 23,612 psi | 53% | 974 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 17,535 psi | 40% | 1007 fps | 87.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 17,651 psi | 40% | 988 fps | 99.4% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 21,263 psi | 48% | 1168 fps | 85.6% |
| Somchem MP200*² | <<locked>> | 60% | 17,999 psi | 41% | 1020 fps | 94.7% |
| Somchem MS200² | <<locked>> | 60% | 16,433 psi | 37% | 968 fps | 95.7% |
| Somchem S221*² | <<locked>> | 72% | 27,978 psi | 63% | 1243 fps | 85.1% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 15,592 psi | 35% | 988 fps | 86.3% |
| Vihtavuori N310² | <<locked>> | 60% | 29,327 psi | 66% | 1060 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 19,450 psi | 44% | 1004 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,587 psi | 22% | 741 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,550 psi | 40% | 1014 fps | 100% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,795 psi | 36% | 965 fps | 94.6% |
| Vihtavuori N350*² | <<locked>> | 68% | 14,953 psi | 34% | 968 fps | 86% |
| Winchester 231² | <<locked>> | 60% | 24,555 psi | 56% | 1102 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 34,171 psi | 77% | 1224 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 30,530 psi | 69% | 1273 fps | 95.8% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,273 psi | 35% | 942 fps | 97.8% |
* 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 | 125gr | Sierra Sig V-Crown. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,470 fps; across all powders the maximum-charge window runs from 823 fps to 1,470 fps. ADI AP 100 gives the best case fill at 100 %, and 49 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 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, Somchem S221 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.