Load Specifications
Load data in caliber .357 SIG with .355 | 95gr | CamPro RN bullet and 64 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 MS200.
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% | 39,813 psi | 90% | 1608 fps | 99.4% |
| Accurate No. 5*² | <<locked>> | 72% | 38,247 psi | 86% | 1670 fps | 93.2% |
| Accurate Solo 1000 | <<locked>> | 88% | 38,101 psi | 86% | 1499 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 39,117 psi | 88% | 1585 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 38,116 psi | 86% | 1591 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 37,507 psi | 85% | 1362 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 39,813 psi | 90% | 1430 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 40,030 psi | 90% | 1493 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 39,624 psi | 90% | 1542 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 37,536 psi | 85% | 1549 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 37,695 psi | 85% | 1634 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 38,972 psi | 88% | 1539 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 28,689 psi | 65% | 1483 fps | 98.8% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 39,001 psi | 88% | 1729 fps | 90.7% |
| Alliant RED DOT | <<locked>> | 92% | 37,304 psi | 84% | 1483 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 39,537 psi | 89% | 1660 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 37,565 psi | 85% | 1644 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 39,624 psi | 90% | 1526 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 29,472 psi | 67% | 1411 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 37,275 psi | 84% | 1522 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 92% | 39,508 psi | 89% | 1601 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 39,958 psi | 90% | 1430 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 39,233 psi | 89% | 1562 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 35,505 psi | 80% | 1611 fps | 94.3% |
| Hodgdon Longshot² | <<locked>> | 76% | 39,798 psi | 90% | 1677 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,285 psi | 28% | 997 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 38,116 psi | 86% | 1591 fps | 100% |
| Lovex D036*² | <<locked>> | 72% | 38,189 psi | 86% | 1667 fps | 93.2% |
| Lovex S011² | <<locked>> | 76% | 37,695 psi | 85% | 1526 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 39,465 psi | 89% | 1617 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 39,218 psi | 89% | 1578 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 37,478 psi | 85% | 1575 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 37,579 psi | 85% | 1535 fps | 100% |
| Maxam CSB 4 | <<locked>> | 92% | 40,016 psi | 90% | 1539 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 37,913 psi | 86% | 1457 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 39,218 psi | 89% | 1654 fps | 99.6% |
| Ramshot True Blue² | <<locked>> | 72% | 36,187 psi | 82% | 1617 fps | 96.3% |
| Ramshot Zip² | <<locked>> | 68% | 38,754 psi | 88% | 1565 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 38,348 psi | 87% | 1565 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,095 psi | 25% | 978 fps | 97.7% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 36,230 psi | 82% | 1627 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 36,579 psi | 83% | 1499 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 31,923 psi | 72% | 1654 fps | 93.1% |
| Shooters World Auto Pistol*² | <<locked>> | 72% | 38,189 psi | 86% | 1667 fps | 93.2% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 38,928 psi | 88% | 1604 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 38,624 psi | 87% | 1552 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 37,391 psi | 85% | 1555 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 37,753 psi | 85% | 1404 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 34,824 psi | 79% | 1578 fps | 95.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 39,450 psi | 89% | 1594 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 38,827 psi | 88% | 1745 fps | 92.7% |
| Somchem MP200 | <<locked>> | 88% | 37,710 psi | 85% | 1627 fps | 99.7% |
| Somchem MS200 | <<locked>> | 92% | 37,289 psi | 84% | 1598 fps | 100% |
| Vihtavuori 3N37 | <<locked>> | 96% | 37,565 psi | 85% | 1657 fps | 97% |
| Vihtavuori N310² | <<locked>> | 68% | 36,463 psi | 82% | 1398 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 39,813 psi | 90% | 1549 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 22,858 psi | 52% | 1227 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 38,986 psi | 88% | 1604 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 36,782 psi | 83% | 1591 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 35,201 psi | 80% | 1611 fps | 96.5% |
| Winchester 231² | <<locked>> | 76% | 38,754 psi | 88% | 1565 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 37,710 psi | 85% | 1542 fps | 100% |
| Winchester 572² | <<locked>> | 68% | 39,624 psi | 90% | 1690 fps | 96.7% |
| Winchester AutoComp | <<locked>> | 96% | 37,463 psi | 85% | 1578 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% | 17,347 psi | 39% | 1178 fps | 89.7% |
| Accurate No. 5*² | <<locked>> | 60% | 25,063 psi | 57% | 1421 fps | 86.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,782 psi | 42% | 1171 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,142 psi | 34% | 1122 fps | 96.5% |
| ADI AP 70N² | <<locked>> | 60% | 22,017 psi | 50% | 1312 fps | 99.9% |
| ADI APS 350² | <<locked>> | 60% | 22,104 psi | 50% | 1132 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,958 psi | 47% | 1145 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 18,927 psi | 43% | 1152 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 20,044 psi | 45% | 1217 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,490 psi | 35% | 1135 fps | 98.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,131 psi | 46% | 1283 fps | 95.6% |
| Alliant Green Dot² | <<locked>> | 60% | 18,492 psi | 42% | 1184 fps | 100% |
| Alliant Herco*² | <<locked>> | 64% | 12,285 psi | 28% | 1050 fps | 86.4% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 31,720 psi | 72% | 1598 fps | 87% |
| Alliant RED DOT² | <<locked>> | 60% | 18,304 psi | 41% | 1155 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,408 psi | 51% | 1345 fps | 96.3% |
| Alliant UNIQUE*² | 5.5 gr | 60% | 15,040 psi | 34% | 1145 fps | 90% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,318 psi | 39% | 1152 fps | 99.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,501 psi | 24% | 971 fps | 97.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,043 psi | 41% | 1194 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 16,665 psi | 38% | 1171 fps | 97.2% |
| Hodgdon Clays² | <<locked>> | 60% | 17,158 psi | 39% | 1066 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 30,966 psi | 70% | 1447 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 21,103 psi | 48% | 1316 fps | 85.4% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,061 psi | 52% | 1365 fps | 89.4% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,845 psi | 13% | 719 fps | 93.1% |
| Hodgdon Universal² | <<locked>> | 60% | 18,260 psi | 41% | 1220 fps | 98.9% |
| Lovex D036*² | <<locked>> | 60% | 25,019 psi | 57% | 1417 fps | 86% |
| Lovex S011² | <<locked>> | 60% | 23,482 psi | 53% | 1299 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,550 psi | 40% | 1211 fps | 95.2% |
| Maxam CSB 1² | <<locked>> | 60% | 14,547 psi | 33% | 1099 fps | 96.1% |
| Maxam CSB 2² | <<locked>> | 60% | 14,504 psi | 33% | 1138 fps | 99.4% |
| Maxam CSB 3² | <<locked>> | 60% | 16,621 psi | 38% | 1148 fps | 99.7% |
| Maxam CSB 4² | <<locked>> | 60% | 18,101 psi | 41% | 1171 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 21,292 psi | 48% | 1201 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 20,987 psi | 47% | 1309 fps | 93.2% |
| Ramshot True Blue*² | <<locked>> | 60% | 24,134 psi | 55% | 1385 fps | 90.3% |
| Ramshot Zip² | <<locked>> | 60% | 29,849 psi | 67% | 1437 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,450 psi | 44% | 1253 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,395 psi | 12% | 696 fps | 86.3% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 13,097 psi | 30% | 1106 fps | 89.9% |
| Rottweil P 801² | <<locked>> | 60% | 23,192 psi | 52% | 1293 fps | 100% |
| Rottweil P 806* | <<locked>> | 88% | 21,408 psi | 48% | 1430 fps | 85.7% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 25,019 psi | 57% | 1417 fps | 86% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,649 psi | 33% | 1099 fps | 89.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,289 psi | 41% | 1191 fps | 99.3% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,535 psi | 40% | 1178 fps | 96.7% |
| SNPE Vectan BA10² | <<locked>> | 60% | 23,264 psi | 53% | 1188 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 76% | 19,160 psi | 43% | 1253 fps | 85.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,998 psi | 38% | 1175 fps | 97.6% |
| SNPE Vectan SP 2* | <<locked>> | 80% | 26,963 psi | 61% | 1522 fps | 86.2% |
| Somchem MP200*² | <<locked>> | 60% | 17,535 psi | 40% | 1211 fps | 91.3% |
| Somchem MS200*² | 5.6 gr | 60% | 16,302 psi | 37% | 1161 fps | 92.8% |
| Vihtavuori 3N37*² | 8 gr | 72% | 18,971 psi | 43% | 1280 fps | 86.3% |
| Vihtavuori N310² | <<locked>> | 60% | 29,008 psi | 66% | 1296 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 18,492 psi | 42% | 1198 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,282 psi | 21% | 892 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,071 psi | 39% | 1211 fps | 98.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,374 psi | 35% | 1145 fps | 91% |
| Vihtavuori N350*² | <<locked>> | 76% | 18,623 psi | 42% | 1266 fps | 86.4% |
| Winchester 231² | <<locked>> | 60% | 24,453 psi | 55% | 1339 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 33,112 psi | 75% | 1476 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 29,660 psi | 67% | 1516 fps | 92.8% |
| Winchester AutoComp *² | <<locked>> | 60% | 14,678 psi | 33% | 1115 fps | 94.9% |
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 45 powders for .357 SIG loaded with the .355 | 95gr | CamPro RN. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,745 fps; across all powders the maximum-charge window runs from 978 fps to 1,745 fps. Alliant Herco gives the best case fill at 100 %, and 45 of the 45 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. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon Clays 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 MS200 rank at the top here: for .357 SIG with the .355 | 95gr | CamPro RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Rottweil P 806, SNPE Vectan SP 2 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.