Load Specifications
Load data in caliber .357 Mag. with .355 | 116gr | Norma SPFN bullet and 67 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% | 36,477 psi | 84% | 1522 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 38,740 psi | 89% | 1650 fps | 99.2% |
| Accurate No. 7* | <<locked>> | 80% | 39,349 psi | 90% | 1713 fps | 91.2% |
| Accurate Solo 1000 | <<locked>> | 80% | 38,711 psi | 89% | 1444 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 37,956 psi | 87% | 1499 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 36,970 psi | 85% | 1621 fps | 97.8% |
| ADI AP 70N² | <<locked>> | 68% | 36,071 psi | 83% | 1493 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 36,985 psi | 85% | 1302 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 38,580 psi | 89% | 1358 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 38,000 psi | 87% | 1401 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 37,797 psi | 87% | 1450 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 36,187 psi | 83% | 1460 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 35,636 psi | 82% | 1640 fps | 88.3% |
| Alliant BULLSEYE² | <<locked>> | 72% | 36,172 psi | 83% | 1555 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 37,304 psi | 86% | 1447 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 38,072 psi | 88% | 1578 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 38,334 psi | 88% | 1696 fps | 97.7% |
| Alliant RED DOT | <<locked>> | 80% | 35,969 psi | 83% | 1398 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 36,796 psi | 85% | 1568 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 37,956 psi | 87% | 1588 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 38,203 psi | 88% | 1440 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 38,029 psi | 87% | 1450 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 38,885 psi | 89% | 1467 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,724 psi | 87% | 1345 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 36,912 psi | 85% | 1601 fps | 99.7% |
| Hodgdon Longshot² | <<locked>> | 64% | 35,723 psi | 82% | 1578 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,201 psi | 37% | 1053 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 36,869 psi | 85% | 1503 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 38,682 psi | 89% | 1650 fps | 99.2% |
| Lovex D037.1* | <<locked>> | 80% | 39,349 psi | 90% | 1713 fps | 91.2% |
| Lovex S011² | <<locked>> | 68% | 37,318 psi | 86% | 1460 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 37,434 psi | 86% | 1529 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 38,043 psi | 87% | 1493 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 37,855 psi | 87% | 1496 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 36,013 psi | 83% | 1444 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 38,072 psi | 88% | 1447 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 39,073 psi | 90% | 1401 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 36,201 psi | 83% | 1558 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 36,927 psi | 85% | 1591 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 36,985 psi | 85% | 1467 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,794 psi | 34% | 1056 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 36,172 psi | 83% | 1552 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 35,824 psi | 82% | 1647 fps | 92.1% |
| Rottweil P 801² | <<locked>> | 68% | 38,247 psi | 88% | 1444 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 39,160 psi | 90% | 1722 fps | 100% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 38,682 psi | 89% | 1650 fps | 99.2% |
| Shooters World Major Pistol* | <<locked>> | 80% | 39,349 psi | 90% | 1713 fps | 91.2% |
| SNPE Vectan A0 | <<locked>> | 88% | 39,073 psi | 90% | 1545 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 36,071 psi | 83% | 1453 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 38,957 psi | 90% | 1512 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 36,840 psi | 85% | 1339 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 37,478 psi | 86% | 1588 fps | 99.9% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 38,232 psi | 88% | 1509 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 39,349 psi | 90% | 1719 fps | 99% |
| Somchem MP200² | <<locked>> | 76% | 36,680 psi | 84% | 1558 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 35,534 psi | 82% | 1516 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 37,985 psi | 87% | 1654 fps | 95.7% |
| Vihtavuori 3N37 | <<locked>> | 84% | 37,014 psi | 85% | 1608 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 38,189 psi | 88% | 1670 fps | 93.8% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 32,256 psi | 74% | 1640 fps | 95.4% |
| Vihtavuori N320² | <<locked>> | 76% | 38,189 psi | 88% | 1453 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,660 psi | 68% | 1263 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,608 psi | 86% | 1509 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 35,766 psi | 82% | 1519 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 35,708 psi | 82% | 1581 fps | 100% |
| Winchester 231² | <<locked>> | 68% | 39,305 psi | 90% | 1503 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 36,912 psi | 85% | 1503 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% | 22,205 psi | 51% | 1283 fps | 99.2% |
| Accurate No. 5² | <<locked>> | 60% | 33,620 psi | 77% | 1572 fps | 98.1% |
| Accurate No. 7*² | <<locked>> | 72% | 29,385 psi | 68% | 1542 fps | 86% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,627 psi | 54% | 1224 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,653 psi | 45% | 1207 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,259 psi | 37% | 1184 fps | 85.2% |
| ADI AP 70N² | <<locked>> | 60% | 28,442 psi | 65% | 1381 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,773 psi | 59% | 1148 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,874 psi | 57% | 1168 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,453 psi | 54% | 1191 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 25,164 psi | 58% | 1266 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 20,537 psi | 47% | 1217 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 32,489 psi | 75% | 1585 fps | 86.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 25,570 psi | 59% | 1381 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,800 psi | 52% | 1227 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,431 psi | 33% | 1112 fps | 97% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,710 psi | 43% | 1283 fps | 86.6% |
| Alliant RED DOT² | <<locked>> | 60% | 22,437 psi | 52% | 1191 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 29,095 psi | 67% | 1447 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 19,856 psi | 46% | 1263 fps | 99.5% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,060 psi | 51% | 1207 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,040 psi | 32% | 1050 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 23,917 psi | 55% | 1263 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,436 psi | 47% | 1089 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 28,398 psi | 65% | 1460 fps | 97.9% |
| Hodgdon Longshot² | <<locked>> | 60% | 30,922 psi | 71% | 1503 fps | 99.5% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,513 psi | 17% | 784 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 23,786 psi | 55% | 1299 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 33,576 psi | 77% | 1572 fps | 98.1% |
| Lovex D037.1*² | <<locked>> | 72% | 29,385 psi | 68% | 1542 fps | 86% |
| Lovex S011² | <<locked>> | 60% | 29,776 psi | 68% | 1358 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,960 psi | 53% | 1306 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 18,855 psi | 43% | 1184 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 19,841 psi | 46% | 1217 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,437 psi | 49% | 1217 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,192 psi | 53% | 1227 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 26,179 psi | 60% | 1227 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 27,934 psi | 64% | 1427 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 32,039 psi | 74% | 1516 fps | 99.6% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 26,774 psi | 62% | 1325 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,904 psi | 16% | 771 fps | 97.8% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 18,260 psi | 42% | 1240 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 24,584 psi | 56% | 1427 fps | 85.4% |
| Rottweil P 801² | <<locked>> | 60% | 30,240 psi | 70% | 1342 fps | 100% |
| Rottweil P 806*² | 10.3 gr | 60% | 13,140 psi | 30% | 1165 fps | 86.4% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 33,576 psi | 77% | 1572 fps | 98.1% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 29,385 psi | 68% | 1542 fps | 86% |
| SNPE Vectan A0² | <<locked>> | 60% | 18,826 psi | 43% | 1201 fps | 99.2% |
| SNPE Vectan A1² | <<locked>> | 60% | 23,308 psi | 54% | 1260 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,452 psi | 52% | 1260 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,064 psi | 62% | 1204 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.5 gr | 60% | 15,722 psi | 36% | 1148 fps | 90.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,959 psi | 50% | 1257 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 20,349 psi | 47% | 1352 fps | 90.6% |
| Somchem MP200² | <<locked>> | 60% | 23,221 psi | 53% | 1329 fps | 99.8% |
| Somchem MS200² | <<locked>> | 60% | 20,900 psi | 48% | 1260 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 24,860 psi | 57% | 1414 fps | 89.3% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,927 psi | 41% | 1237 fps | 94.2% |
| Vihtavuori 3N38* | <<locked>> | 84% | 24,381 psi | 56% | 1417 fps | 86.4% |
| Vihtavuori N105* | <<locked>> | 84% | 19,740 psi | 45% | 1365 fps | 86.4% |
| Vihtavuori N320² | <<locked>> | 60% | 24,076 psi | 55% | 1253 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,430 psi | 29% | 945 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 22,960 psi | 53% | 1293 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,073 psi | 46% | 1250 fps | 99.7% |
| Vihtavuori N350*² | 7.4 gr | 60% | 15,809 psi | 36% | 1178 fps | 92.6% |
| Winchester 231² | <<locked>> | 60% | 31,241 psi | 72% | 1398 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 19,276 psi | 44% | 1211 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 67 powders for .357 Mag. loaded with the .355 | 116gr | Norma SPFN. Rottweil P 806 delivers the highest muzzle velocity at 1,722 fps; across all powders the maximum-charge window runs from 1,053 fps to 1,722 fps. ADI AP 100 gives the best case fill at 100 %, and 40 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 34–90 %, 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 | 116gr | Norma SPFN 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.