Load Specifications
Load data in caliber .357 SIG with .356 | 95gr | Rim Rock RN bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant BULLSEYE, Somchem MS200 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.
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% | 38,072 psi | 86% | 1562 fps | 99% |
| Accurate No. 5*² | <<locked>> | 72% | 36,796 psi | 83% | 1627 fps | 92.1% |
| Accurate Solo 1000 | <<locked>> | 92% | 39,146 psi | 88% | 1499 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 37,318 psi | 84% | 1545 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 36,376 psi | 82% | 1552 fps | 100% |
| ADI APS 350 | <<locked>> | 88% | 39,378 psi | 89% | 1368 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 38,740 psi | 88% | 1401 fps | 100% |
| ADI AS 30 | <<locked>> | 92% | 38,812 psi | 88% | 1463 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 38,566 psi | 87% | 1516 fps | 100% |
| Alliant BE-86 | <<locked>> | 96% | 39,247 psi | 89% | 1555 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 88% | 40,016 psi | 90% | 1650 fps | 100% |
| Alliant Green Dot | <<locked>> | 92% | 37,927 psi | 86% | 1509 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 27,557 psi | 62% | 1447 fps | 98.2% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 36,550 psi | 83% | 1670 fps | 89% |
| Alliant RED DOT | <<locked>> | 96% | 39,117 psi | 88% | 1493 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 37,971 psi | 86% | 1624 fps | 99.9% |
| Alliant UNIQUEᴾ | <<locked>> | 100% | 38,957 psi | 88% | 1650 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 38,740 psi | 88% | 1503 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 28,108 psi | 64% | 1378 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 35,795 psi | 81% | 1490 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 72% | 39,697 psi | 90% | 1598 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 38,914 psi | 88% | 1401 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 37,550 psi | 85% | 1529 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 80% | 38,522 psi | 87% | 1637 fps | 94.9% |
| Hodgdon Longshot² | <<locked>> | 76% | 37,434 psi | 85% | 1621 fps | 96.2% |
| Hodgdon TiteGroup² | <<locked>> | 64% | 39,566 psi | 89% | 1493 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,676 psi | 26% | 968 fps | 99.9% |
| Hodgdon Universal | <<locked>> | 92% | 39,320 psi | 89% | 1594 fps | 100% |
| Lovex D036*² | <<locked>> | 72% | 36,738 psi | 83% | 1627 fps | 92.1% |
| Lovex S011² | <<locked>> | 76% | 35,708 psi | 81% | 1483 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 37,768 psi | 85% | 1581 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 36,622 psi | 83% | 1532 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 39,755 psi | 90% | 1591 fps | 100% |
| Maxam CSB 3 | <<locked>> | 96% | 38,798 psi | 88% | 1535 fps | 100% |
| Maxam CSB 4 | <<locked>> | 92% | 39,030 psi | 88% | 1512 fps | 100% |
| Maxam CSB 5 | <<locked>> | 88% | 39,856 psi | 90% | 1463 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 37,347 psi | 84% | 1611 fps | 99.2% |
| Ramshot True Blue² | <<locked>> | 76% | 40,030 psi | 90% | 1654 fps | 97% |
| Ramshot Zip² | <<locked>> | 68% | 37,144 psi | 84% | 1529 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 36,230 psi | 82% | 1529 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,530 psi | 24% | 951 fps | 96.9% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 37,782 psi | 85% | 1634 fps | 100% |
| Rottweil P 801 | <<locked>> | 80% | 38,609 psi | 87% | 1512 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 28,950 psi | 65% | 1588 fps | 91% |
| Shooters World Auto Pistol*² | <<locked>> | 72% | 36,738 psi | 83% | 1627 fps | 92.1% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 37,797 psi | 85% | 1572 fps | 99.9% |
| SNPE Vectan A1 | <<locked>> | 88% | 37,318 psi | 84% | 1519 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 92% | 39,929 psi | 90% | 1572 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 84% | 39,813 psi | 90% | 1414 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 32,605 psi | 74% | 1526 fps | 93.7% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 37,884 psi | 86% | 1562 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 36,274 psi | 82% | 1686 fps | 91.1% |
| Somchem MP200 | <<locked>> | 88% | 36,492 psi | 82% | 1591 fps | 99.5% |
| Somchem MS200 | <<locked>> | 96% | 38,783 psi | 88% | 1604 fps | 100% |
| Vihtavuori 3N37ᴾ | <<locked>> | 100% | 39,842 psi | 90% | 1670 fps | 97.2% |
| Vihtavuori N310² | <<locked>> | 72% | 39,465 psi | 89% | 1421 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 38,696 psi | 87% | 1519 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 21,756 psi | 49% | 1198 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 37,173 psi | 84% | 1568 fps | 100% |
| Vihtavuori N340 | <<locked>> | 96% | 39,494 psi | 89% | 1611 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 33,460 psi | 76% | 1568 fps | 95.5% |
| Winchester 231² | <<locked>> | 76% | 37,144 psi | 84% | 1529 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 37,014 psi | 84% | 1516 fps | 100% |
| Winchester 572² | <<locked>> | 68% | 37,695 psi | 85% | 1640 fps | 95.7% |
| Winchester AutoComp ᴾ | <<locked>> | 100% | 39,262 psi | 89% | 1588 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% | 16,244 psi | 37% | 1135 fps | 87.9% |
| Accurate No. 5*² | <<locked>> | 64% | 28,065 psi | 63% | 1470 fps | 87.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,695 psi | 42% | 1158 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 14,475 psi | 33% | 1093 fps | 95.6% |
| ADI AP 70N² | <<locked>> | 60% | 20,784 psi | 47% | 1273 fps | 99.5% |
| ADI APS 350² | <<locked>> | 60% | 21,002 psi | 47% | 1099 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,088 psi | 45% | 1119 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 18,681 psi | 42% | 1138 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,261 psi | 44% | 1188 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,026 psi | 34% | 1115 fps | 98.2% |
| Alliant BULLSEYE*² | 5.3 gr | 60% | 18,942 psi | 43% | 1240 fps | 94.3% |
| Alliant Green Dot² | <<locked>> | 60% | 17,724 psi | 40% | 1155 fps | 100% |
| Alliant Herco*² | <<locked>> | 64% | 11,893 psi | 27% | 1024 fps | 85.2% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 30,110 psi | 68% | 1549 fps | 85.5% |
| Alliant RED DOT² | <<locked>> | 60% | 17,332 psi | 39% | 1125 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 21,350 psi | 48% | 1306 fps | 95.2% |
| Alliant UNIQUE*² | <<locked>> | 60% | 14,460 psi | 33% | 1119 fps | 88.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 16,665 psi | 38% | 1122 fps | 99.7% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,993 psi | 23% | 945 fps | 96.8% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 17,390 psi | 39% | 1171 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 26,658 psi | 60% | 1398 fps | 99.9% |
| Hodgdon Clays² | <<locked>> | 60% | 16,288 psi | 37% | 1037 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 29,138 psi | 66% | 1404 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 22,916 psi | 52% | 1348 fps | 86.5% |
| Hodgdon Longshot*² | <<locked>> | 60% | 22,075 psi | 50% | 1329 fps | 88.1% |
| Hodgdon TiteGroup² | <<locked>> | 60% | 35,288 psi | 80% | 1440 fps | 100% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,555 psi | 13% | 696 fps | 91.8% |
| Hodgdon Universal² | <<locked>> | 60% | 17,622 psi | 40% | 1194 fps | 98.4% |
| Lovex D036*² | <<locked>> | 64% | 28,021 psi | 63% | 1467 fps | 87.5% |
| Lovex S011² | <<locked>> | 60% | 22,916 psi | 52% | 1276 fps | 100% |
| Lovex S020*² | <<locked>> | 60% | 16,476 psi | 37% | 1171 fps | 93.9% |
| Maxam CSB 1² | <<locked>> | 60% | 13,967 psi | 32% | 1070 fps | 95.2% |
| Maxam CSB 2² | <<locked>> | 60% | 13,750 psi | 31% | 1109 fps | 99% |
| Maxam CSB 3² | <<locked>> | 60% | 15,896 psi | 36% | 1122 fps | 99.4% |
| Maxam CSB 4² | <<locked>> | 60% | 17,274 psi | 39% | 1145 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,320 psi | 46% | 1171 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 20,262 psi | 46% | 1280 fps | 92.1% |
| Ramshot True Blue*² | <<locked>> | 60% | 23,134 psi | 52% | 1352 fps | 89.1% |
| Ramshot Zip² | <<locked>> | 60% | 28,863 psi | 65% | 1407 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 18,695 psi | 42% | 1227 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,337 psi | 12% | 689 fps | 85.6% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 12,691 psi | 29% | 1079 fps | 88.8% |
| Rottweil P 801² | <<locked>> | 60% | 21,828 psi | 49% | 1260 fps | 100% |
| Rottweil P 806* | <<locked>> | 92% | 22,046 psi | 50% | 1440 fps | 85.9% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 28,021 psi | 63% | 1467 fps | 87.5% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,185 psi | 32% | 1073 fps | 88.5% |
| SNPE Vectan A1² | <<locked>> | 60% | 17,912 psi | 40% | 1171 fps | 99% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,129 psi | 39% | 1155 fps | 96% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,437 psi | 51% | 1165 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 20,218 psi | 46% | 1266 fps | 85.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,462 psi | 37% | 1152 fps | 96.9% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 28,805 psi | 65% | 1549 fps | 86.9% |
| Somchem MP200*² | <<locked>> | 60% | 16,650 psi | 38% | 1175 fps | 89.9% |
| Somchem MS200*² | 5.3 gr | 60% | 15,809 psi | 36% | 1135 fps | 91.9% |
| Vihtavuori 3N37*² | <<locked>> | 72% | 18,420 psi | 42% | 1253 fps | 85.2% |
| Vihtavuori N310² | <<locked>> | 60% | 28,065 psi | 63% | 1270 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 17,622 psi | 40% | 1171 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,949 psi | 20% | 873 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 15,867 psi | 36% | 1168 fps | 98% |
| Vihtavuori N340*² | 5.4 gr | 60% | 14,431 psi | 33% | 1102 fps | 89.4% |
| Vihtavuori N350* | <<locked>> | 80% | 19,638 psi | 44% | 1283 fps | 86.8% |
| Winchester 231² | <<locked>> | 60% | 23,380 psi | 53% | 1306 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 32,184 psi | 73% | 1450 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 28,398 psi | 64% | 1476 fps | 91.6% |
| Winchester AutoComp *² | <<locked>> | 60% | 14,272 psi | 32% | 1096 fps | 94.2% |
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 65 powders for .357 SIG loaded with the .356 | 95gr | Rim Rock RN. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,686 fps; across all powders the maximum-charge window runs from 951 fps to 1,686 fps. Alliant Herco gives the best case fill at 100 %, and 51 of the 65 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. Alliant Herco, Alliant UNIQUE, 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. Alliant BULLSEYE, Somchem MS200, Vihtavuori N340 rank at the top here: for .357 SIG with the .356 | 95gr | Rim Rock RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Alliant POWER PISTOL, Hodgdon HS-6 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, ADI APS 350, ADI APS 450 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.