Load Specifications
Load data in caliber .357 Mag. with .355 | 124gr | Remington BJHP bullet and 64 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% | 38,014 psi | 87% | 1483 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 35,418 psi | 81% | 1594 fps | 90.5% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,216 psi | 83% | 1355 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 38,508 psi | 89% | 1447 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 38,174 psi | 88% | 1581 fps | 98.7% |
| ADI AP 70N² | <<locked>> | 68% | 36,564 psi | 84% | 1437 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,608 psi | 86% | 1257 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 36,724 psi | 84% | 1283 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 38,072 psi | 88% | 1345 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 38,087 psi | 88% | 1394 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 36,898 psi | 85% | 1411 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 37,217 psi | 86% | 1611 fps | 90.2% |
| Alliant BULLSEYE² | <<locked>> | 72% | 36,651 psi | 84% | 1499 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,450 psi | 88% | 1401 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 39,044 psi | 90% | 1529 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 35,795 psi | 82% | 1594 fps | 97.6% |
| Alliant RED DOT | <<locked>> | 80% | 36,912 psi | 85% | 1355 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 37,347 psi | 86% | 1512 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 38,769 psi | 89% | 1535 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 38,595 psi | 89% | 1385 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 36,332 psi | 84% | 1371 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 35,462 psi | 82% | 1371 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 38,609 psi | 89% | 1302 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 38,087 psi | 88% | 1558 fps | 99.9% |
| Hodgdon Longshot² | <<locked>> | 64% | 36,782 psi | 85% | 1535 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,694 psi | 38% | 1020 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 37,391 psi | 86% | 1450 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 35,418 psi | 81% | 1594 fps | 90.5% |
| Lovex S011² | <<locked>> | 68% | 38,566 psi | 89% | 1414 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 39,117 psi | 90% | 1486 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,158 psi | 83% | 1411 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 35,940 psi | 83% | 1411 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 36,419 psi | 84% | 1391 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 39,320 psi | 90% | 1401 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 39,160 psi | 90% | 1345 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 37,043 psi | 85% | 1509 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 38,000 psi | 87% | 1545 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 38,493 psi | 88% | 1424 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,273 psi | 35% | 1024 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 37,913 psi | 87% | 1512 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 37,318 psi | 86% | 1614 fps | 93.7% |
| Rottweil P 801² | <<locked>> | 68% | 38,783 psi | 89% | 1391 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 36,245 psi | 83% | 1621 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 35,418 psi | 81% | 1594 fps | 90.5% |
| SNPE Vectan A0 | <<locked>> | 84% | 36,535 psi | 84% | 1457 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,405 psi | 86% | 1411 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,390 psi | 84% | 1421 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,594 psi | 86% | 1293 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 38,624 psi | 89% | 1545 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 38,870 psi | 89% | 1460 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 36,100 psi | 83% | 1608 fps | 98.9% |
| Somchem MP200² | <<locked>> | 76% | 37,434 psi | 86% | 1506 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 36,985 psi | 85% | 1473 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 38,696 psi | 89% | 1608 fps | 96.7% |
| Vihtavuori 3N37 | <<locked>> | 84% | 39,001 psi | 90% | 1572 fps | 100% |
| Vihtavuori 3N38ᴾ | <<locked>> | 100% | 39,146 psi | 90% | 1627 fps | 95.1% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 34,127 psi | 78% | 1611 fps | 96.9% |
| Vihtavuori N320² | <<locked>> | 76% | 38,551 psi | 89% | 1394 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,719 psi | 71% | 1224 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 38,334 psi | 88% | 1457 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 37,391 psi | 86% | 1480 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 36,811 psi | 85% | 1535 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 35,549 psi | 82% | 1398 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 37,768 psi | 87% | 1453 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% | 23,018 psi | 53% | 1253 fps | 99.7% |
| Accurate No. 7*² | <<locked>> | 68% | 26,237 psi | 60% | 1430 fps | 85.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,192 psi | 56% | 1184 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,276 psi | 47% | 1171 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,955 psi | 39% | 1161 fps | 87.2% |
| ADI AP 70N² | <<locked>> | 60% | 29,457 psi | 68% | 1342 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,092 psi | 60% | 1106 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,295 psi | 58% | 1129 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,975 psi | 55% | 1148 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 25,846 psi | 59% | 1224 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,277 psi | 49% | 1184 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 30,226 psi | 69% | 1490 fps | 86.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,397 psi | 61% | 1342 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,380 psi | 54% | 1188 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,910 psi | 34% | 1083 fps | 98% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 19,522 psi | 45% | 1263 fps | 88.7% |
| Alliant RED DOT² | <<locked>> | 60% | 22,916 psi | 53% | 1152 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,124 psi | 69% | 1407 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,566 psi | 47% | 1230 fps | 99.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,684 psi | 52% | 1168 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,518 psi | 33% | 1020 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 24,903 psi | 57% | 1227 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,740 psi | 48% | 1050 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,124 psi | 67% | 1421 fps | 98.7% |
| Hodgdon Longshot² | <<locked>> | 60% | 31,807 psi | 73% | 1463 fps | 99.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,614 psi | 18% | 755 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,555 psi | 56% | 1260 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 26,237 psi | 60% | 1430 fps | 85.2% |
| Lovex S011² | <<locked>> | 60% | 29,849 psi | 69% | 1302 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 23,859 psi | 55% | 1270 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,450 psi | 45% | 1148 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,566 psi | 47% | 1181 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,046 psi | 51% | 1178 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,815 psi | 55% | 1188 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 26,774 psi | 62% | 1184 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 29,109 psi | 67% | 1394 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 33,620 psi | 77% | 1483 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 27,833 psi | 64% | 1283 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,252 psi | 17% | 758 fps | 98.8% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,043 psi | 44% | 1211 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 22,872 psi | 53% | 1342 fps | 85.3% |
| Rottweil P 801² | <<locked>> | 60% | 31,270 psi | 72% | 1299 fps | 100% |
| Rottweil P 806*² | 10.1 gr | 60% | 13,779 psi | 32% | 1145 fps | 88.7% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 26,237 psi | 60% | 1430 fps | 85.2% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,450 psi | 45% | 1168 fps | 99.7% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,047 psi | 55% | 1224 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,192 psi | 53% | 1224 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,557 psi | 63% | 1161 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.4 gr | 60% | 16,360 psi | 38% | 1125 fps | 92.5% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,669 psi | 52% | 1220 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 21,002 psi | 48% | 1319 fps | 92.3% |
| Somchem MP200² | <<locked>> | 60% | 23,540 psi | 54% | 1286 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,625 psi | 50% | 1227 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 25,672 psi | 59% | 1381 fps | 91% |
| Vihtavuori 3N37² | <<locked>> | 60% | 18,782 psi | 43% | 1214 fps | 95.7% |
| Vihtavuori 3N38* | <<locked>> | 80% | 22,756 psi | 52% | 1335 fps | 86.3% |
| Vihtavuori N105* | <<locked>> | 80% | 18,391 psi | 42% | 1283 fps | 86.3% |
| Vihtavuori N320² | <<locked>> | 60% | 24,860 psi | 57% | 1214 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,734 psi | 29% | 912 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,844 psi | 55% | 1257 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,871 psi | 48% | 1217 fps | 100% |
| Vihtavuori N350*² | 7.2 gr | 60% | 16,041 psi | 37% | 1138 fps | 93.9% |
| Winchester 231² | <<locked>> | 60% | 31,546 psi | 73% | 1345 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,001 psi | 46% | 1178 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 64 powders for .357 Mag. loaded with the .355 | 124gr | Remington BJHP. Vihtavuori 3N38 delivers the highest muzzle velocity at 1,627 fps; across all powders the maximum-charge window runs from 1,020 fps to 1,627 fps. ADI AP 100 gives the best case fill at 100 %, and 33 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 35–90 %, 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 | Remington BJHP 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, Alliant Herco, Baschieri & Pellagri 102 Pistol 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.