Load Specifications
Load data in caliber .357 Maximum with .355 | 115gr | ALSA PRO FMJ bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, ADI AP 100 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: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 72% | 36,622 psi | 81% | 1582 fps | 100% |
| Accurate No. 7*² | <<locked>> | 72% | 35,389 psi | 79% | 1707 fps | 91.2% |
| Accurate Solo 1000² | <<locked>> | 76% | 38,957 psi | 87% | 1501 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 39,030 psi | 87% | 1565 fps | 100% |
| ADI AP 100 | <<locked>> | 96% | 38,841 psi | 86% | 1712 fps | 99.1% |
| ADI AP 70N² | <<locked>> | 68% | 40,538 psi | 90% | 1602 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 39,987 psi | 89% | 1397 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 38,116 psi | 85% | 1476 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 38,159 psi | 85% | 1456 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 37,623 psi | 84% | 1501 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 40,277 psi | 90% | 1561 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 38,725 psi | 86% | 1754 fps | 91.6% |
| Alliant BULLSEYE² | <<locked>> | 72% | 40,030 psi | 89% | 1663 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 37,840 psi | 84% | 1581 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 40,379 psi | 90% | 1661 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 40,408 psi | 90% | 1787 fps | 99% |
| Alliant RED DOT | <<locked>> | 80% | 39,755 psi | 88% | 1502 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 37,260 psi | 83% | 1628 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 39,334 psi | 87% | 1658 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 38,696 psi | 86% | 1501 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 40,045 psi | 89% | 1522 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 39,407 psi | 88% | 1522 fps | 100% |
| Hodgdon Clays² | <<locked>> | 72% | 36,782 psi | 82% | 1434 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 37,231 psi | 83% | 1662 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 18,304 psi | 41% | 1130 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 36,970 psi | 82% | 1555 fps | 100% |
| Lovex D037.1*² | <<locked>> | 72% | 35,389 psi | 79% | 1707 fps | 91.2% |
| Lovex S011² | <<locked>> | 64% | 36,651 psi | 82% | 1506 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 38,290 psi | 85% | 1592 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 39,508 psi | 88% | 1566 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 40,161 psi | 89% | 1572 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 40,030 psi | 89% | 1547 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 38,479 psi | 86% | 1504 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 38,392 psi | 85% | 1447 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 36,550 psi | 81% | 1617 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 38,290 psi | 85% | 1529 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 16,679 psi | 37% | 1132 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 38,130 psi | 85% | 1627 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 80% | 37,594 psi | 84% | 1735 fps | 94.4% |
| Rottweil P 801² | <<locked>> | 64% | 37,739 psi | 84% | 1487 fps | 100% |
| Rottweil P 806 | <<locked>> | 84% | 38,203 psi | 85% | 1750 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 35,389 psi | 79% | 1707 fps | 91.2% |
| SNPE Vectan A0 | <<locked>> | 84% | 39,552 psi | 88% | 1609 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 40,379 psi | 90% | 1637 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 39,465 psi | 88% | 1650 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 39,552 psi | 88% | 1427 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 39,465 psi | 88% | 1673 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 38,276 psi | 85% | 1564 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 72% | 36,811 psi | 82% | 1731 fps | 99.2% |
| Somchem MP200² | <<locked>> | 72% | 37,536 psi | 83% | 1623 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 40,480 psi | 90% | 1636 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 38,406 psi | 85% | 1721 fps | 97.1% |
| Vihtavuori 3N37 | <<locked>> | 80% | 38,667 psi | 86% | 1685 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 92% | 39,146 psi | 87% | 1746 fps | 95.7% |
| Vihtavuori N105 | <<locked>> | 96% | 35,969 psi | 80% | 1752 fps | 97.8% |
| Vihtavuori N320² | <<locked>> | 72% | 37,681 psi | 84% | 1499 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 40,045 psi | 89% | 1422 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 40,205 psi | 89% | 1593 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 36,347 psi | 81% | 1582 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 39,697 psi | 88% | 1694 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 39,218 psi | 87% | 1558 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 38,392 psi | 85% | 1654 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 25,454 psi | 57% | 1400 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 26,353 psi | 59% | 1529 fps | 85.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 26,049 psi | 58% | 1311 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 22,843 psi | 51% | 1313 fps | 100% |
| ADI AP 100*² | 9.3 gr | 64% | 16,911 psi | 38% | 1242 fps | 87.5% |
| ADI AP 70N² | <<locked>> | 60% | 32,300 psi | 72% | 1486 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 27,456 psi | 61% | 1223 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 26,614 psi | 59% | 1306 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 25,730 psi | 57% | 1273 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 28,094 psi | 62% | 1360 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 23,221 psi | 52% | 1307 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 84% | 27,905 psi | 62% | 1549 fps | 85.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 29,066 psi | 65% | 1491 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 25,324 psi | 56% | 1385 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 16,592 psi | 37% | 1211 fps | 99% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 21,959 psi | 49% | 1415 fps | 91.1% |
| Alliant RED DOT² | <<locked>> | 60% | 25,005 psi | 56% | 1280 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 32,532 psi | 72% | 1554 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 22,669 psi | 50% | 1369 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 25,324 psi | 56% | 1307 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 16,172 psi | 36% | 1134 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 27,456 psi | 61% | 1360 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 27,920 psi | 62% | 1302 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 32,561 psi | 72% | 1589 fps | 99.6% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,470 psi | 19% | 847 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 26,789 psi | 60% | 1395 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 26,353 psi | 59% | 1529 fps | 85.7% |
| Lovex S011² | <<locked>> | 60% | 33,069 psi | 74% | 1455 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 26,803 psi | 60% | 1418 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 21,379 psi | 48% | 1276 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 23,366 psi | 52% | 1319 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 24,294 psi | 54% | 1311 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 25,672 psi | 57% | 1315 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 28,964 psi | 64% | 1315 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 32,300 psi | 72% | 1551 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 30,734 psi | 68% | 1425 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,760 psi | 17% | 835 fps | 99.3% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 21,495 psi | 48% | 1348 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 22,727 psi | 51% | 1430 fps | 85.5% |
| Rottweil P 801² | <<locked>> | 60% | 34,287 psi | 76% | 1440 fps | 100% |
| Rottweil P 806*² | <<locked>> | 60% | 16,418 psi | 37% | 1293 fps | 91.8% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 26,353 psi | 59% | 1529 fps | 85.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 21,263 psi | 47% | 1302 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 26,426 psi | 59% | 1430 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 25,628 psi | 57% | 1440 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 29,805 psi | 66% | 1294 fps | 100% |
| SNPE Vectan BA7 1/2*² | 9.3 gr | 60% | 18,347 psi | 41% | 1264 fps | 94.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 25,237 psi | 56% | 1363 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 24,584 psi | 55% | 1493 fps | 94.8% |
| Somchem MP200² | <<locked>> | 60% | 26,252 psi | 58% | 1436 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 24,018 psi | 53% | 1370 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 29,283 psi | 65% | 1560 fps | 93.6% |
| Vihtavuori 3N37² | <<locked>> | 60% | 20,856 psi | 46% | 1353 fps | 97.2% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 21,901 psi | 49% | 1406 fps | 86% |
| Vihtavuori N105*² | 12.5 gr | 76% | 19,189 psi | 43% | 1392 fps | 87.6% |
| Vihtavuori N320² | <<locked>> | 60% | 26,977 psi | 60% | 1344 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 16,128 psi | 36% | 1064 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 25,208 psi | 56% | 1374 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 23,047 psi | 51% | 1357 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 19,261 psi | 43% | 1311 fps | 96.6% |
| Winchester 231² | <<locked>> | 60% | 35,070 psi | 78% | 1503 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 22,220 psi | 49% | 1388 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 62 powders for .357 Maximum loaded with the .355 | 115gr | ALSA PRO FMJ. Alliant POWER PISTOL delivers the highest muzzle velocity at 1,787 fps; across all powders the maximum-charge window runs from 1,130 fps to 1,787 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 26 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 37–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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. Vihtavuori N105, ADI AP 100, SNPE Vectan BA7 1/2 rank at the top here: for .357 Maximum with the .355 | 115gr | ALSA PRO FMJ 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. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.