Load Specifications
Load data in caliber .357 Mag. with .356 | 120gr | H&N RN F 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.
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Max Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 36,666 psi | 84% | 1503 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 38,653 psi | 89% | 1634 fps | 99.4% |
| Accurate No. 7* | <<locked>> | 80% | 38,885 psi | 89% | 1686 fps | 91.7% |
| Accurate Solo 1000 | <<locked>> | 80% | 37,985 psi | 87% | 1414 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 37,942 psi | 87% | 1480 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 36,796 psi | 85% | 1601 fps | 98.2% |
| ADI AP 70N² | <<locked>> | 72% | 38,885 psi | 89% | 1509 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,275 psi | 86% | 1289 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 38,870 psi | 89% | 1342 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 36,869 psi | 85% | 1371 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 36,608 psi | 84% | 1421 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 39,160 psi | 90% | 1476 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 35,128 psi | 81% | 1617 fps | 88.9% |
| Alliant BULLSEYE² | <<locked>> | 72% | 35,447 psi | 81% | 1522 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,392 psi | 88% | 1434 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 37,463 psi | 86% | 1552 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 38,189 psi | 88% | 1677 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 84% | 38,493 psi | 88% | 1414 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 36,912 psi | 85% | 1549 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 36,709 psi | 84% | 1552 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 37,231 psi | 86% | 1411 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 37,724 psi | 87% | 1427 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 38,479 psi | 88% | 1444 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,942 psi | 87% | 1329 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 36,695 psi | 84% | 1581 fps | 99.8% |
| Hodgdon Longshot² | <<locked>> | 64% | 35,447 psi | 81% | 1555 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 14,924 psi | 34% | 1024 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 35,447 psi | 81% | 1467 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 38,609 psi | 89% | 1631 fps | 99.4% |
| Lovex D037.1* | <<locked>> | 80% | 38,885 psi | 89% | 1686 fps | 91.7% |
| Lovex S011² | <<locked>> | 68% | 36,622 psi | 84% | 1430 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 37,173 psi | 85% | 1506 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 38,014 psi | 87% | 1473 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 37,362 psi | 86% | 1473 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 38,624 psi | 89% | 1457 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 38,130 psi | 88% | 1427 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 38,247 psi | 88% | 1371 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 36,027 psi | 83% | 1539 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 36,709 psi | 84% | 1568 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 36,303 psi | 83% | 1444 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,213 psi | 30% | 1017 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 36,042 psi | 83% | 1532 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 35,534 psi | 82% | 1624 fps | 92.7% |
| Rottweil P 801² | <<locked>> | 68% | 36,767 psi | 85% | 1411 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 38,769 psi | 89% | 1696 fps | 100% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 38,609 psi | 89% | 1631 fps | 99.4% |
| Shooters World Major Pistol* | <<locked>> | 80% | 38,885 psi | 89% | 1686 fps | 91.7% |
| SNPE Vectan A0 | <<locked>> | 88% | 38,290 psi | 88% | 1519 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 36,042 psi | 83% | 1434 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 39,059 psi | 90% | 1493 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 36,201 psi | 83% | 1312 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 37,246 psi | 86% | 1568 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 37,275 psi | 86% | 1480 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 38,783 psi | 89% | 1690 fps | 99.2% |
| Somchem MP200² | <<locked>> | 76% | 35,578 psi | 82% | 1522 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 35,302 psi | 81% | 1496 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 36,477 psi | 84% | 1617 fps | 95.8% |
| Vihtavuori 3N37 | <<locked>> | 84% | 36,724 psi | 84% | 1585 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 37,840 psi | 87% | 1647 fps | 94.3% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 31,865 psi | 73% | 1614 fps | 95.8% |
| Vihtavuori N310² | <<locked>> | 64% | 39,160 psi | 90% | 1345 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 37,144 psi | 85% | 1421 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,008 psi | 67% | 1243 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 36,550 psi | 84% | 1476 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 35,578 psi | 82% | 1499 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 35,491 psi | 82% | 1558 fps | 100% |
| Winchester 231² | <<locked>> | 68% | 39,233 psi | 90% | 1483 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 36,564 psi | 84% | 1480 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% | 22,017 psi | 51% | 1270 fps | 99.4% |
| Accurate No. 5² | <<locked>> | 60% | 33,446 psi | 77% | 1552 fps | 98.5% |
| Accurate No. 7*² | <<locked>> | 72% | 28,761 psi | 66% | 1519 fps | 86.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 22,858 psi | 53% | 1198 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,276 psi | 44% | 1188 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 15,664 psi | 36% | 1161 fps | 85.2% |
| ADI AP 70N² | <<locked>> | 60% | 27,702 psi | 64% | 1355 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,121 psi | 58% | 1125 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,250 psi | 56% | 1145 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 22,321 psi | 51% | 1161 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 23,960 psi | 55% | 1234 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 19,392 psi | 45% | 1184 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 31,923 psi | 73% | 1562 fps | 87.2% |
| Alliant BULLSEYE² | <<locked>> | 60% | 25,469 psi | 59% | 1362 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,714 psi | 55% | 1220 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 13,474 psi | 31% | 1079 fps | 96.6% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,130 psi | 42% | 1260 fps | 86.8% |
| Alliant RED DOT² | <<locked>> | 60% | 21,248 psi | 49% | 1161 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 28,311 psi | 65% | 1417 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 19,116 psi | 44% | 1237 fps | 99.6% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,683 psi | 50% | 1191 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,285 psi | 31% | 1027 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 23,308 psi | 54% | 1240 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 19,711 psi | 45% | 1066 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 27,354 psi | 63% | 1427 fps | 97.9% |
| Hodgdon Longshot² | <<locked>> | 60% | 30,589 psi | 70% | 1480 fps | 99.6% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,237 psi | 14% | 741 fps | 99.5% |
| Hodgdon Universal² | <<locked>> | 60% | 22,321 psi | 51% | 1263 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 33,388 psi | 77% | 1552 fps | 98.4% |
| Lovex D037.1*² | <<locked>> | 72% | 28,761 psi | 66% | 1519 fps | 86.5% |
| Lovex S011² | <<locked>> | 60% | 29,008 psi | 67% | 1329 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,394 psi | 51% | 1283 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 17,825 psi | 41% | 1152 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 18,971 psi | 44% | 1191 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,103 psi | 49% | 1198 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,292 psi | 51% | 1198 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,338 psi | 58% | 1201 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 27,601 psi | 63% | 1407 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 31,720 psi | 73% | 1496 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 25,222 psi | 58% | 1289 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 5,700 psi | 13% | 728 fps | 95.7% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,274 psi | 40% | 1204 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 24,018 psi | 55% | 1404 fps | 85.8% |
| Rottweil P 801² | <<locked>> | 60% | 29,486 psi | 68% | 1316 fps | 100% |
| Rottweil P 806*² | 11 gr | 64% | 13,576 psi | 31% | 1178 fps | 87.8% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 33,388 psi | 77% | 1552 fps | 98.4% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 28,761 psi | 66% | 1519 fps | 86.5% |
| SNPE Vectan A0² | <<locked>> | 60% | 17,956 psi | 41% | 1171 fps | 99.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 23,061 psi | 53% | 1243 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,220 psi | 51% | 1243 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,209 psi | 63% | 1191 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.6 gr | 60% | 15,098 psi | 35% | 1122 fps | 90.7% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,495 psi | 49% | 1237 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 19,464 psi | 45% | 1319 fps | 90.5% |
| Somchem MP200² | <<locked>> | 60% | 22,104 psi | 51% | 1296 fps | 99.8% |
| Somchem MS200² | <<locked>> | 60% | 20,407 psi | 47% | 1240 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 23,931 psi | 55% | 1385 fps | 89.4% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,274 psi | 40% | 1211 fps | 94.2% |
| Vihtavuori 3N38* | <<locked>> | 84% | 23,757 psi | 55% | 1394 fps | 86.7% |
| Vihtavuori N105* | <<locked>> | 84% | 19,014 psi | 44% | 1339 fps | 86.5% |
| Vihtavuori N310² | <<locked>> | 60% | 35,128 psi | 81% | 1299 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 23,714 psi | 55% | 1234 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,037 psi | 25% | 909 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 22,495 psi | 52% | 1273 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 19,566 psi | 45% | 1230 fps | 99.8% |
| Vihtavuori N350*² | 7.4 gr | 60% | 14,736 psi | 34% | 1138 fps | 92.1% |
| Winchester 231² | <<locked>> | 60% | 30,313 psi | 70% | 1368 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,579 psi | 43% | 1188 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 .356 | 120gr | H&N RN F. Rottweil P 806 delivers the highest muzzle velocity at 1,696 fps; across all powders the maximum-charge window runs from 1,017 fps to 1,696 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 .356 | 120gr | H&N RN F 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. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon Clays 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.