Load Specifications
Load data in caliber .357 Mag. with .355 | 124gr | Hornady FMJ RN ENC 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, Vihtavuori N350 and SNPE Vectan BA7 1/2.
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% | 36,085 psi | 83% | 1437 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 38,334 psi | 88% | 1568 fps | 99.3% |
| Accurate No. 7* | <<locked>> | 80% | 37,681 psi | 87% | 1611 fps | 90.8% |
| Accurate Solo 1000 | <<locked>> | 80% | 38,566 psi | 89% | 1365 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 37,521 psi | 86% | 1417 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 36,042 psi | 83% | 1532 fps | 97.8% |
| ADI AP 70N² | <<locked>> | 72% | 39,015 psi | 90% | 1453 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 36,840 psi | 85% | 1230 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 38,130 psi | 88% | 1280 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 37,492 psi | 86% | 1322 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 36,680 psi | 84% | 1362 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 39,001 psi | 90% | 1417 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 35,172 psi | 81% | 1558 fps | 88.5% |
| Alliant BULLSEYE² | <<locked>> | 76% | 39,189 psi | 90% | 1516 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 37,115 psi | 85% | 1371 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 37,289 psi | 86% | 1493 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 37,971 psi | 87% | 1611 fps | 97.8% |
| Alliant RED DOT | <<locked>> | 84% | 39,160 psi | 90% | 1365 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 36,376 psi | 84% | 1483 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 37,086 psi | 85% | 1496 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 37,449 psi | 86% | 1358 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 37,681 psi | 87% | 1375 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 38,522 psi | 89% | 1391 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,376 psi | 86% | 1270 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 35,882 psi | 82% | 1509 fps | 99.6% |
| Hodgdon Longshot² | <<locked>> | 64% | 35,114 psi | 81% | 1493 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 15,867 psi | 36% | 994 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 36,289 psi | 83% | 1421 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 38,276 psi | 88% | 1565 fps | 99.2% |
| Lovex D037.1* | <<locked>> | 80% | 37,681 psi | 87% | 1611 fps | 90.8% |
| Lovex S011² | <<locked>> | 68% | 36,434 psi | 84% | 1371 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 37,246 psi | 86% | 1450 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 37,898 psi | 87% | 1417 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 37,463 psi | 86% | 1414 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 38,841 psi | 89% | 1404 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 37,956 psi | 87% | 1371 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 38,522 psi | 89% | 1322 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 35,853 psi | 82% | 1476 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 36,419 psi | 84% | 1506 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 37,173 psi | 85% | 1394 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,518 psi | 33% | 997 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 35,447 psi | 81% | 1470 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 34,824 psi | 80% | 1552 fps | 92% |
| Rottweil P 801² | <<locked>> | 68% | 37,550 psi | 86% | 1362 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 37,797 psi | 87% | 1627 fps | 100% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 38,276 psi | 88% | 1565 fps | 99.2% |
| Shooters World Major Pistol* | <<locked>> | 80% | 37,681 psi | 87% | 1611 fps | 90.8% |
| SNPE Vectan A0 | <<locked>> | 88% | 38,464 psi | 88% | 1463 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 80% | 39,363 psi | 90% | 1417 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 38,290 psi | 88% | 1427 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 36,230 psi | 83% | 1260 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 37,217 psi | 86% | 1506 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 37,173 psi | 85% | 1424 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 38,348 psi | 88% | 1624 fps | 99% |
| Somchem MP200² | <<locked>> | 76% | 36,042 psi | 83% | 1470 fps | 100% |
| Somchem MS200 | <<locked>> | 84% | 38,812 psi | 89% | 1480 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 36,927 psi | 85% | 1562 fps | 95.6% |
| Vihtavuori 3N37 | <<locked>> | 84% | 36,463 psi | 84% | 1522 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 36,695 psi | 84% | 1568 fps | 93.6% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 31,372 psi | 72% | 1552 fps | 95.4% |
| Vihtavuori N310² | <<locked>> | 64% | 39,204 psi | 90% | 1293 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 37,115 psi | 85% | 1365 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,631 psi | 68% | 1198 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 36,274 psi | 83% | 1417 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 35,708 psi | 82% | 1444 fps | 100% |
| Vihtavuori N350 | <<locked>> | 92% | 39,291 psi | 90% | 1552 fps | 100% |
| Winchester 231² | <<locked>> | 68% | 39,001 psi | 90% | 1424 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 36,637 psi | 84% | 1424 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% | 21,611 psi | 50% | 1207 fps | 99.2% |
| Accurate No. 5² | <<locked>> | 60% | 32,866 psi | 76% | 1483 fps | 98.1% |
| Accurate No. 7*² | <<locked>> | 72% | 28,660 psi | 66% | 1460 fps | 86.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,163 psi | 53% | 1152 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,392 psi | 45% | 1142 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,244 psi | 37% | 1129 fps | 85.7% |
| ADI AP 70N² | <<locked>> | 60% | 28,065 psi | 65% | 1306 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,585 psi | 59% | 1083 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,236 psi | 56% | 1096 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,511 psi | 54% | 1129 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 24,831 psi | 57% | 1198 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 20,117 psi | 46% | 1152 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 31,792 psi | 73% | 1503 fps | 86.7% |
| Alliant BULLSEYE² | <<locked>> | 60% | 24,947 psi | 57% | 1299 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,350 psi | 51% | 1155 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,330 psi | 33% | 1056 fps | 97.2% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,710 psi | 43% | 1227 fps | 87.3% |
| Alliant RED DOT² | <<locked>> | 60% | 22,350 psi | 51% | 1129 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 28,877 psi | 66% | 1371 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 19,827 psi | 46% | 1204 fps | 99.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,785 psi | 50% | 1138 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,808 psi | 32% | 994 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 23,757 psi | 55% | 1198 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,276 psi | 47% | 1030 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 27,514 psi | 63% | 1375 fps | 97.8% |
| Hodgdon Longshot² | <<locked>> | 60% | 30,705 psi | 71% | 1427 fps | 99.5% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,382 psi | 17% | 738 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 23,047 psi | 53% | 1220 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 32,808 psi | 75% | 1486 fps | 98.1% |
| Lovex D037.1*² | <<locked>> | 72% | 28,660 psi | 66% | 1460 fps | 86.1% |
| Lovex S011² | <<locked>> | 60% | 29,196 psi | 67% | 1280 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,466 psi | 52% | 1230 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 18,608 psi | 43% | 1119 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 19,566 psi | 45% | 1152 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,045 psi | 48% | 1148 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,756 psi | 52% | 1158 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,628 psi | 59% | 1155 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 27,717 psi | 64% | 1355 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 31,894 psi | 73% | 1440 fps | 99.7% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 26,136 psi | 60% | 1247 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,773 psi | 16% | 725 fps | 97.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,767 psi | 41% | 1168 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 24,091 psi | 55% | 1355 fps | 85.6% |
| Rottweil P 801² | <<locked>> | 60% | 29,776 psi | 68% | 1266 fps | 100% |
| Rottweil P 806*² | 9.4 gr | 60% | 12,604 psi | 29% | 1099 fps | 86.4% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 32,808 psi | 75% | 1486 fps | 98.1% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 28,660 psi | 66% | 1460 fps | 86.1% |
| SNPE Vectan A0² | <<locked>> | 60% | 18,275 psi | 42% | 1129 fps | 99.2% |
| SNPE Vectan A1² | <<locked>> | 60% | 22,902 psi | 53% | 1191 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,060 psi | 51% | 1191 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,412 psi | 63% | 1145 fps | 100% |
| SNPE Vectan BA7 1/2*² | 6.9 gr | 60% | 15,563 psi | 36% | 1089 fps | 91.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,930 psi | 50% | 1194 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 19,595 psi | 45% | 1270 fps | 90.5% |
| Somchem MP200² | <<locked>> | 60% | 22,423 psi | 52% | 1250 fps | 99.8% |
| Somchem MS200² | <<locked>> | 60% | 20,334 psi | 47% | 1184 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 24,265 psi | 56% | 1335 fps | 89.3% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,869 psi | 41% | 1178 fps | 94.6% |
| Vihtavuori 3N38* | <<locked>> | 84% | 24,076 psi | 55% | 1348 fps | 86.7% |
| Vihtavuori N105* | <<locked>> | 84% | 19,348 psi | 44% | 1296 fps | 86.6% |
| Vihtavuori N310² | <<locked>> | 60% | 34,940 psi | 80% | 1243 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 23,772 psi | 55% | 1184 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,198 psi | 28% | 889 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 22,365 psi | 51% | 1220 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 19,580 psi | 45% | 1178 fps | 99.8% |
| Vihtavuori N350*² | 6.8 gr | 60% | 15,548 psi | 36% | 1112 fps | 92.8% |
| Winchester 231² | <<locked>> | 60% | 30,385 psi | 70% | 1316 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,956 psi | 44% | 1145 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 | Hornady FMJ RN ENC. Rottweil P 806 delivers the highest muzzle velocity at 1,627 fps; across all powders the maximum-charge window runs from 994 fps to 1,627 fps. ADI AP 100 gives the best case fill at 100 %, and 41 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 33–90 %, 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, Vihtavuori N350, SNPE Vectan BA7 1/2 rank at the top here: for .357 Mag. with the .355 | 124gr | Hornady FMJ RN ENC 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.