Load Specifications
Load data in caliber .357 Mag. with .355 | 115gr | Frontier RN FMJ bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, SNPE Vectan BA7 1/2 and Vihtavuori N350.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 38,406 psi | 88% | 1549 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 36,477 psi | 84% | 1670 fps | 90% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,970 psi | 85% | 1424 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 36,492 psi | 84% | 1483 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 39,349 psi | 90% | 1660 fps | 98.4% |
| ADI AP 70N² | <<locked>> | 68% | 38,696 psi | 89% | 1522 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 38,624 psi | 89% | 1325 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 36,608 psi | 84% | 1339 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 39,320 psi | 90% | 1417 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 39,247 psi | 90% | 1467 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 38,218 psi | 88% | 1486 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 38,189 psi | 88% | 1683 fps | 89.5% |
| Alliant BULLSEYE² | <<locked>> | 72% | 37,260 psi | 86% | 1572 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 36,172 psi | 83% | 1434 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 37,449 psi | 86% | 1572 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 36,564 psi | 84% | 1670 fps | 97.3% |
| Alliant RED DOT | <<locked>> | 80% | 38,290 psi | 88% | 1427 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 38,638 psi | 89% | 1594 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,405 psi | 84% | 1562 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 35,882 psi | 82% | 1414 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 37,724 psi | 87% | 1447 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 37,202 psi | 86% | 1447 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 39,247 psi | 90% | 1368 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 34,664 psi | 80% | 1568 fps | 99.4% |
| Hodgdon Longshot² | <<locked>> | 64% | 38,247 psi | 88% | 1617 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 18,072 psi | 42% | 1079 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 38,696 psi | 89% | 1522 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 36,477 psi | 84% | 1670 fps | 90% |
| Lovex S011² | <<locked>> | 68% | 39,073 psi | 90% | 1486 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 36,303 psi | 83% | 1516 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,854 psi | 85% | 1480 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 37,318 psi | 86% | 1486 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 38,072 psi | 88% | 1470 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 36,593 psi | 84% | 1430 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,535 psi | 84% | 1371 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 38,072 psi | 88% | 1588 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 36,622 psi | 84% | 1457 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 16,897 psi | 39% | 1089 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 39,088 psi | 90% | 1591 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 38,421 psi | 88% | 1690 fps | 93.2% |
| Rottweil P 801² | <<locked>> | 64% | 36,114 psi | 83% | 1414 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 38,566 psi | 89% | 1713 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,477 psi | 84% | 1670 fps | 90% |
| SNPE Vectan A0 | <<locked>> | 84% | 36,796 psi | 85% | 1519 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,724 psi | 87% | 1476 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,695 psi | 84% | 1486 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,420 psi | 86% | 1348 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 36,405 psi | 84% | 1575 fps | 99.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,318 psi | 83% | 1486 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,289 psi | 86% | 1686 fps | 98.6% |
| Somchem MP200² | <<locked>> | 76% | 38,783 psi | 89% | 1588 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 37,536 psi | 86% | 1542 fps | 100% |
| Somchem S221*² | <<locked>> | 68% | 35,578 psi | 82% | 1617 fps | 94.9% |
| Vihtavuori 3N37 | <<locked>> | 80% | 36,071 psi | 83% | 1591 fps | 100% |
| Vihtavuori 3N38* | <<locked>> | 96% | 36,506 psi | 84% | 1644 fps | 93.2% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 35,302 psi | 81% | 1690 fps | 96.5% |
| Vihtavuori N320² | <<locked>> | 72% | 36,013 psi | 83% | 1424 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 32,126 psi | 74% | 1289 fps | 100% |
| Vihtavuori N330² | <<locked>> | 72% | 35,679 psi | 82% | 1486 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 37,913 psi | 87% | 1549 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 37,637 psi | 87% | 1611 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 37,101 psi | 85% | 1480 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 38,972 psi | 90% | 1529 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 24,149 psi | 56% | 1322 fps | 99.6% |
| Accurate No. 7*² | <<locked>> | 72% | 32,155 psi | 74% | 1594 fps | 87.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,831 psi | 57% | 1243 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 21,770 psi | 50% | 1243 fps | 100% |
| ADI AP 100*² | <<locked>> | 64% | 16,244 psi | 37% | 1175 fps | 85.3% |
| ADI AP 70N² | <<locked>> | 60% | 31,009 psi | 71% | 1417 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,774 psi | 62% | 1161 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,846 psi | 59% | 1184 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 25,063 psi | 58% | 1211 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,731 psi | 61% | 1289 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 22,713 psi | 52% | 1253 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 31,604 psi | 73% | 1568 fps | 86.2% |
| Alliant BULLSEYE² | <<locked>> | 60% | 27,499 psi | 63% | 1414 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 25,106 psi | 58% | 1263 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 16,621 psi | 38% | 1161 fps | 98.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,682 psi | 48% | 1332 fps | 88.6% |
| Alliant RED DOT² | <<locked>> | 60% | 24,149 psi | 56% | 1214 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,951 psi | 71% | 1480 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 22,234 psi | 51% | 1312 fps | 99.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 24,207 psi | 56% | 1240 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 16,230 psi | 37% | 1093 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,976 psi | 60% | 1293 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,538 psi | 50% | 1106 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 30,269 psi | 70% | 1493 fps | 98.5% |
| Hodgdon Longshot² | <<locked>> | 60% | 33,504 psi | 77% | 1545 fps | 99.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 9,065 psi | 21% | 814 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 25,672 psi | 59% | 1325 fps | 100% |
| Lovex D037.1*² | <<locked>> | 72% | 32,155 psi | 74% | 1594 fps | 87.7% |
| Lovex S011² | <<locked>> | 60% | 30,777 psi | 71% | 1371 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 25,396 psi | 58% | 1345 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 20,421 psi | 47% | 1211 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 22,611 psi | 52% | 1260 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,916 psi | 53% | 1237 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,613 psi | 57% | 1247 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,601 psi | 63% | 1247 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 29,820 psi | 69% | 1460 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 29,138 psi | 67% | 1352 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 8,789 psi | 20% | 820 fps | 99.7% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,972 psi | 46% | 1273 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 24,149 psi | 56% | 1414 fps | 85.1% |
| Rottweil P 801² | <<locked>> | 60% | 33,054 psi | 76% | 1371 fps | 100% |
| Rottweil P 806*² | 10.5 gr | 60% | 16,012 psi | 37% | 1243 fps | 90.5% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 32,155 psi | 74% | 1594 fps | 87.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 20,204 psi | 46% | 1227 fps | 99.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 25,077 psi | 58% | 1289 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 24,265 psi | 56% | 1293 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,703 psi | 66% | 1230 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.7 gr | 60% | 17,622 psi | 41% | 1194 fps | 92.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 24,091 psi | 55% | 1293 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 23,003 psi | 53% | 1407 fps | 92.7% |
| Somchem MP200² | <<locked>> | 60% | 24,787 psi | 57% | 1358 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 22,989 psi | 53% | 1299 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 27,673 psi | 64% | 1470 fps | 91.1% |
| Vihtavuori 3N37² | <<locked>> | 60% | 20,088 psi | 46% | 1283 fps | 95.8% |
| Vihtavuori 3N38* | <<locked>> | 80% | 24,047 psi | 55% | 1407 fps | 86.1% |
| Vihtavuori N105* | <<locked>> | 80% | 20,276 psi | 47% | 1375 fps | 87% |
| Vihtavuori N320² | <<locked>> | 60% | 26,542 psi | 61% | 1289 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 14,446 psi | 33% | 974 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 25,353 psi | 58% | 1332 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 22,292 psi | 51% | 1289 fps | 100% |
| Vihtavuori N350*² | 7.5 gr | 60% | 17,390 psi | 40% | 1214 fps | 94.2% |
| Winchester 231² | <<locked>> | 60% | 32,532 psi | 75% | 1414 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 21,538 psi | 50% | 1250 fps | 100% |
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 63 powders for .357 Mag. loaded with the .355 | 115gr | Frontier RN FMJ. Rottweil P 806 delivers the highest muzzle velocity at 1,713 fps; across all powders the maximum-charge window runs from 1,079 fps to 1,713 fps. ADI AP 100 gives the best case fill at 100 %, and 29 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 39–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant BLUE DOT, Hodgdon TrailBoss 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. Rottweil P 806, SNPE Vectan BA7 1/2, Vihtavuori N350 rank at the top here: for .357 Mag. with the .355 | 115gr | Frontier RN FMJ they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, Alliant BLUE DOT, Lovex D037.1 burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, Hodgdon Clays, Hodgdon TrailBoss 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.