Load Specifications
Load data in caliber .357 SIG with .355 | 115gr | CamPro RN 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 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.
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Max Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 88% | 40,001 psi | 90% | 1407 fps | 99.9% |
| Accurate No. 5² | <<locked>> | 72% | 39,001 psi | 88% | 1480 fps | 95.2% |
| Accurate Solo 1000 | <<locked>> | 88% | 38,232 psi | 86% | 1306 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 39,015 psi | 88% | 1375 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 27,456 psi | 62% | 1296 fps | 87.7% |
| ADI AP 70N | <<locked>> | 80% | 39,102 psi | 88% | 1398 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 37,550 psi | 85% | 1181 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,088 psi | 88% | 1230 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 39,740 psi | 90% | 1289 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 36,709 psi | 83% | 1309 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 37,985 psi | 86% | 1355 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 38,290 psi | 87% | 1437 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 39,624 psi | 90% | 1345 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 29,515 psi | 67% | 1319 fps | 99.7% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 39,102 psi | 88% | 1526 fps | 92.7% |
| Alliant RED DOT | <<locked>> | 92% | 37,623 psi | 85% | 1293 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 39,856 psi | 90% | 1460 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 38,595 psi | 87% | 1450 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 36,289 psi | 82% | 1289 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 29,733 psi | 67% | 1234 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 37,608 psi | 85% | 1332 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 37,434 psi | 85% | 1381 fps | 100% |
| Hodgdon Clays | <<locked>> | 96% | 37,188 psi | 84% | 1211 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 35,592 psi | 80% | 1319 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 36,318 psi | 82% | 1427 fps | 96.2% |
| Hodgdon Longshot² | <<locked>> | 76% | 39,900 psi | 90% | 1476 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,633 psi | 29% | 879 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 37,869 psi | 86% | 1385 fps | 100% |
| Lovex D036² | <<locked>> | 72% | 38,943 psi | 88% | 1480 fps | 95.2% |
| Lovex S011² | <<locked>> | 76% | 37,333 psi | 84% | 1325 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 35,418 psi | 80% | 1365 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 38,522 psi | 87% | 1368 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 37,710 psi | 85% | 1375 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 37,637 psi | 85% | 1335 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 37,231 psi | 84% | 1309 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 38,232 psi | 86% | 1266 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 39,856 psi | 90% | 1457 fps | 100% |
| Ramshot True Blue² | <<locked>> | 72% | 36,535 psi | 83% | 1424 fps | 97.7% |
| Ramshot Zip² | <<locked>> | 68% | 38,769 psi | 88% | 1365 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 39,218 psi | 89% | 1371 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,052 psi | 25% | 860 fps | 98.9% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 36,825 psi | 83% | 1427 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 36,637 psi | 83% | 1306 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 32,213 psi | 73% | 1473 fps | 95.3% |
| Shooters World Auto Pistol² | <<locked>> | 72% | 38,943 psi | 88% | 1480 fps | 95.2% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 39,349 psi | 89% | 1407 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 39,392 psi | 89% | 1362 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 38,145 psi | 86% | 1365 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 37,855 psi | 86% | 1220 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 34,418 psi | 78% | 1381 fps | 96.5% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 39,900 psi | 90% | 1398 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 38,914 psi | 88% | 1545 fps | 94.7% |
| Somchem MP200 | <<locked>> | 88% | 38,247 psi | 86% | 1434 fps | 100% |
| Somchem MS200 | <<locked>> | 92% | 36,912 psi | 83% | 1391 fps | 100% |
| Somchem S221* | <<locked>> | 80% | 35,998 psi | 81% | 1447 fps | 88.5% |
| Vihtavuori 3N37 | <<locked>> | 96% | 38,479 psi | 87% | 1467 fps | 98.4% |
| Vihtavuori N310² | <<locked>> | 68% | 36,956 psi | 84% | 1214 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 39,668 psi | 90% | 1342 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 23,163 psi | 52% | 1073 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 38,319 psi | 87% | 1391 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 37,826 psi | 86% | 1404 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 35,317 psi | 80% | 1421 fps | 97.9% |
| Winchester 231² | <<locked>> | 76% | 38,769 psi | 88% | 1365 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 38,261 psi | 86% | 1348 fps | 100% |
| Winchester 572² | <<locked>> | 68% | 39,392 psi | 89% | 1476 fps | 97.9% |
| Winchester AutoComp | <<locked>> | 96% | 38,725 psi | 88% | 1391 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% | 17,405 psi | 39% | 1037 fps | 91.9% |
| Accurate No. 5*² | <<locked>> | 60% | 25,715 psi | 58% | 1266 fps | 88.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 19,203 psi | 43% | 1030 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,243 psi | 34% | 988 fps | 98.1% |
| ADI AP 100* | <<locked>> | 96% | 25,251 psi | 57% | 1253 fps | 86.2% |
| ADI AP 70N² | <<locked>> | 60% | 21,770 psi | 49% | 1145 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 22,640 psi | 51% | 988 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 21,089 psi | 48% | 997 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 18,942 psi | 43% | 1001 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 20,015 psi | 45% | 1060 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,722 psi | 36% | 1004 fps | 99.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,189 psi | 46% | 1132 fps | 97.2% |
| Alliant Green Dot² | <<locked>> | 60% | 18,275 psi | 41% | 1027 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,081 psi | 25% | 886 fps | 87% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 25,831 psi | 58% | 1302 fps | 85.6% |
| Alliant RED DOT² | <<locked>> | 60% | 18,246 psi | 41% | 1004 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,437 psi | 51% | 1181 fps | 97.7% |
| Alliant UNIQUE*² | 4.7 gr | 60% | 15,490 psi | 35% | 1024 fps | 92.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,419 psi | 39% | 1007 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,530 psi | 24% | 856 fps | 98.9% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,463 psi | 42% | 1056 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 28,674 psi | 65% | 1266 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 17,593 psi | 40% | 935 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 31,386 psi | 71% | 1266 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 21,379 psi | 48% | 1168 fps | 88.1% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,511 psi | 53% | 1214 fps | 92% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 5,773 psi | 13% | 627 fps | 95% |
| Hodgdon Universal² | <<locked>> | 60% | 18,130 psi | 41% | 1066 fps | 99.6% |
| Lovex D036*² | <<locked>> | 60% | 25,672 psi | 58% | 1263 fps | 88.8% |
| Lovex S011² | <<locked>> | 60% | 23,670 psi | 54% | 1135 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,303 psi | 39% | 1060 fps | 96.8% |
| Maxam CSB 1² | <<locked>> | 60% | 14,663 psi | 33% | 968 fps | 97.8% |
| Maxam CSB 2² | <<locked>> | 60% | 14,750 psi | 33% | 1004 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 17,245 psi | 39% | 1017 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 18,594 psi | 42% | 1033 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,827 psi | 47% | 1033 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 21,524 psi | 49% | 1165 fps | 95.4% |
| Ramshot True Blue*² | <<locked>> | 60% | 24,714 psi | 56% | 1234 fps | 92.8% |
| Ramshot Zip² | <<locked>> | 60% | 30,226 psi | 68% | 1257 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,580 psi | 44% | 1096 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,569 psi | 13% | 623 fps | 89.6% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,692 psi | 31% | 994 fps | 93.4% |
| Rottweil P 801² | <<locked>> | 60% | 23,714 psi | 54% | 1135 fps | 100% |
| Rottweil P 806* | <<locked>> | 84% | 18,536 psi | 42% | 1211 fps | 85.9% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,672 psi | 58% | 1263 fps | 88.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,518 psi | 33% | 961 fps | 91.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,565 psi | 42% | 1050 fps | 99.9% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,782 psi | 40% | 1037 fps | 98.1% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,887 psi | 52% | 1027 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 17,318 psi | 39% | 1060 fps | 85.7% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 17,506 psi | 40% | 1043 fps | 99% |
| SNPE Vectan SP 2*² | <<locked>> | 76% | 23,830 psi | 54% | 1286 fps | 86.6% |
| Somchem MP200*² | 5.3 gr | 60% | 17,550 psi | 40% | 1070 fps | 93.5% |
| Somchem MS200*² | <<locked>> | 60% | 16,244 psi | 37% | 1020 fps | 94.8% |
| Somchem S221*² | <<locked>> | 76% | 31,647 psi | 72% | 1378 fps | 86.2% |
| Vihtavuori 3N37*² | 6.4 gr | 68% | 17,085 psi | 39% | 1083 fps | 86.9% |
| Vihtavuori N310² | <<locked>> | 60% | 29,327 psi | 66% | 1129 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 18,608 psi | 42% | 1050 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,427 psi | 21% | 784 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,274 psi | 39% | 1070 fps | 99.8% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,534 psi | 35% | 1014 fps | 93.4% |
| Vihtavuori N350*² | <<locked>> | 72% | 16,520 psi | 37% | 1066 fps | 86.7% |
| Winchester 231² | <<locked>> | 60% | 24,772 psi | 56% | 1175 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 33,852 psi | 77% | 1296 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 30,443 psi | 69% | 1348 fps | 95% |
| Winchester AutoComp ² | <<locked>> | 60% | 14,968 psi | 34% | 991 fps | 96.9% |
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 | 115gr | CamPro RN. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,545 fps; across all powders the maximum-charge window runs from 860 fps to 1,545 fps. ADI AP 100 gives the best case fill at 100 %, and 51 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 25–90 %, 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, Somchem MP200 rank at the top here: for .357 SIG with the .355 | 115gr | CamPro RN 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.