Load Specifications
Load data in caliber .357 Mag. with .355 | 124gr | Sellier & Bellot LRN bullet and 68 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.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 36,230 psi | 83% | 1463 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 38,116 psi | 88% | 1588 fps | 99.5% |
| Accurate No. 7* | <<locked>> | 80% | 38,406 psi | 88% | 1650 fps | 91.9% |
| Accurate Solo 1000 | <<locked>> | 80% | 38,247 psi | 88% | 1385 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 37,579 psi | 86% | 1440 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 36,419 psi | 84% | 1562 fps | 98.3% |
| ADI AP 70N² | <<locked>> | 68% | 35,041 psi | 81% | 1430 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,173 psi | 85% | 1257 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 39,015 psi | 90% | 1312 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 36,999 psi | 85% | 1339 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 36,854 psi | 85% | 1388 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 39,131 psi | 90% | 1444 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 35,230 psi | 81% | 1588 fps | 89.3% |
| Alliant BULLSEYE² | <<locked>> | 72% | 35,853 psi | 82% | 1496 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 37,202 psi | 86% | 1398 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 37,637 psi | 87% | 1522 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 37,710 psi | 87% | 1631 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 84% | 38,624 psi | 89% | 1381 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 36,550 psi | 84% | 1509 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 37,391 psi | 86% | 1526 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 37,652 psi | 87% | 1381 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 37,739 psi | 87% | 1394 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 38,029 psi | 87% | 1407 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,202 psi | 86% | 1289 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 36,260 psi | 83% | 1539 fps | 99.8% |
| Hodgdon Longshot² | <<locked>> | 64% | 35,650 psi | 82% | 1526 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 14,823 psi | 34% | 994 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 35,911 psi | 83% | 1440 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 38,101 psi | 88% | 1588 fps | 99.4% |
| Lovex D037.1* | <<locked>> | 80% | 38,406 psi | 88% | 1650 fps | 91.9% |
| Lovex S011² | <<locked>> | 68% | 36,956 psi | 85% | 1401 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 36,883 psi | 85% | 1470 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 37,724 psi | 87% | 1437 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 37,014 psi | 85% | 1434 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 39,059 psi | 90% | 1427 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 38,450 psi | 88% | 1398 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 38,334 psi | 88% | 1342 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 36,042 psi | 83% | 1503 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 36,941 psi | 85% | 1539 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 36,753 psi | 84% | 1414 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,126 psi | 30% | 991 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 35,955 psi | 83% | 1496 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 35,404 psi | 81% | 1588 fps | 92.9% |
| Rottweil P 801² | <<locked>> | 68% | 37,173 psi | 85% | 1385 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 38,508 psi | 89% | 1660 fps | 100% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 38,101 psi | 88% | 1588 fps | 99.4% |
| Shooters World Major Pistol* | <<locked>> | 80% | 38,406 psi | 88% | 1650 fps | 91.9% |
| SNPE Vectan A0 | <<locked>> | 88% | 38,189 psi | 88% | 1483 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 35,824 psi | 82% | 1398 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 38,957 psi | 90% | 1457 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 36,260 psi | 83% | 1280 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 37,579 psi | 86% | 1535 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 37,811 psi | 87% | 1453 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 38,464 psi | 88% | 1654 fps | 99.3% |
| Somchem MP200² | <<locked>> | 76% | 36,260 psi | 83% | 1499 fps | 100% |
| Somchem MS200 | <<locked>> | 84% | 39,291 psi | 90% | 1509 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 37,057 psi | 85% | 1591 fps | 96.2% |
| Vihtavuori 3N37 | <<locked>> | 84% | 36,999 psi | 85% | 1552 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 37,811 psi | 87% | 1611 fps | 94.6% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 31,850 psi | 73% | 1581 fps | 96.1% |
| Vihtavuori N310² | <<locked>> | 64% | 39,175 psi | 90% | 1316 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 37,463 psi | 86% | 1391 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 28,572 psi | 66% | 1207 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,159 psi | 85% | 1450 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 35,404 psi | 81% | 1463 fps | 100% |
| Vihtavuori N350 | <<locked>> | 92% | 39,117 psi | 90% | 1572 fps | 100% |
| Winchester 231² | <<locked>> | 68% | 38,943 psi | 90% | 1444 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 36,550 psi | 84% | 1447 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% | 22,060 psi | 51% | 1240 fps | 99.5% |
| Accurate No. 5² | <<locked>> | 60% | 33,562 psi | 77% | 1519 fps | 98.6% |
| Accurate No. 7*² | <<locked>> | 72% | 28,732 psi | 66% | 1490 fps | 86.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,380 psi | 54% | 1178 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,189 psi | 44% | 1158 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 15,447 psi | 36% | 1129 fps | 85.4% |
| ADI AP 70N² | <<locked>> | 60% | 27,137 psi | 62% | 1316 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,498 psi | 59% | 1102 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,975 psi | 55% | 1112 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 22,771 psi | 52% | 1142 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 23,815 psi | 55% | 1204 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 19,464 psi | 45% | 1158 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 28,282 psi | 65% | 1463 fps | 85.3% |
| Alliant BULLSEYE² | <<locked>> | 60% | 25,527 psi | 59% | 1332 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,104 psi | 51% | 1178 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 13,474 psi | 31% | 1056 fps | 96.8% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,318 psi | 42% | 1240 fps | 87.4% |
| Alliant RED DOT² | <<locked>> | 60% | 21,669 psi | 50% | 1142 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 28,514 psi | 66% | 1388 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 19,116 psi | 44% | 1211 fps | 99.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,596 psi | 50% | 1158 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,213 psi | 30% | 1001 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 23,148 psi | 53% | 1211 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,044 psi | 46% | 1047 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 27,383 psi | 63% | 1398 fps | 98.1% |
| Hodgdon Longshot² | <<locked>> | 60% | 30,618 psi | 70% | 1450 fps | 99.7% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,266 psi | 14% | 725 fps | 99.6% |
| Hodgdon Universal² | <<locked>> | 60% | 22,307 psi | 51% | 1234 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 33,518 psi | 77% | 1522 fps | 98.6% |
| Lovex D037.1*² | <<locked>> | 72% | 28,732 psi | 66% | 1490 fps | 86.9% |
| Lovex S011² | <<locked>> | 60% | 29,095 psi | 67% | 1299 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,510 psi | 52% | 1257 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 17,738 psi | 41% | 1125 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 18,898 psi | 43% | 1161 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 20,958 psi | 48% | 1168 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,829 psi | 52% | 1181 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,889 psi | 60% | 1181 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 27,369 psi | 63% | 1375 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 31,807 psi | 73% | 1463 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 25,280 psi | 58% | 1260 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 5,482 psi | 13% | 702 fps | 95.5% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,289 psi | 40% | 1181 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 24,178 psi | 56% | 1381 fps | 86.3% |
| Rottweil P 801² | <<locked>> | 60% | 28,848 psi | 66% | 1276 fps | 100% |
| Rottweil P 806*² | 10.7 gr | 64% | 13,663 psi | 31% | 1158 fps | 88.5% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 33,518 psi | 77% | 1522 fps | 98.6% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 28,732 psi | 66% | 1490 fps | 86.9% |
| SNPE Vectan A0² | <<locked>> | 60% | 17,956 psi | 41% | 1145 fps | 99.3% |
| SNPE Vectan A1² | <<locked>> | 60% | 23,148 psi | 53% | 1214 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,321 psi | 51% | 1217 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,021 psi | 62% | 1158 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.4 gr | 60% | 15,200 psi | 35% | 1102 fps | 91.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,509 psi | 49% | 1207 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 19,319 psi | 44% | 1289 fps | 90.8% |
| Somchem MP200² | <<locked>> | 60% | 22,263 psi | 51% | 1270 fps | 99.9% |
| Somchem MS200² | <<locked>> | 60% | 20,450 psi | 47% | 1214 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 24,033 psi | 55% | 1358 fps | 89.8% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,463 psi | 40% | 1191 fps | 94.7% |
| Vihtavuori 3N38* | <<locked>> | 84% | 23,438 psi | 54% | 1362 fps | 86.9% |
| Vihtavuori N105* | <<locked>> | 84% | 19,160 psi | 44% | 1316 fps | 87.2% |
| Vihtavuori N310² | <<locked>> | 60% | 35,056 psi | 81% | 1266 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 23,612 psi | 54% | 1204 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,226 psi | 26% | 892 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 22,582 psi | 52% | 1243 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 19,638 psi | 45% | 1204 fps | 99.9% |
| Vihtavuori N350*² | 7.2 gr | 60% | 14,837 psi | 34% | 1115 fps | 92.6% |
| Winchester 231² | <<locked>> | 60% | 30,574 psi | 70% | 1342 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,666 psi | 43% | 1161 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 68 powders for .357 Mag. loaded with the .355 | 124gr | Sellier & Bellot LRN. Rottweil P 806 delivers the highest muzzle velocity at 1,660 fps; across all powders the maximum-charge window runs from 991 fps to 1,660 fps. ADI AP 100 gives the best case fill at 100 %, and 40 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 30–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant BLUE DOT, Alliant Herco 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 | 124gr | Sellier & Bellot LRN 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. ADI APS 350, ADI APS 450, Alliant Herco 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.