Load Specifications
Load data in caliber .357 Maximum with .357 | 125gr | Speer TMJ bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star and ReloadSwiss RS 14.
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>> | 68% | 39,798 psi | 89% | 1699 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,100 psi | 80% | 1831 fps | 97.1% |
| Accurate No. 9*² | <<locked>> | 72% | 36,405 psi | 81% | 1831 fps | 92.9% |
| Accurate Solo 1000² | <<locked>> | 72% | 40,567 psi | 90% | 1588 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,319 psi | 85% | 1617 fps | 100% |
| Accurate TCM*² | <<locked>> | 72% | 36,245 psi | 81% | 1821 fps | 94% |
| ADI AP 100 | <<locked>> | 84% | 37,246 psi | 83% | 1781 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 39,842 psi | 89% | 1470 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,276 psi | 87% | 1496 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,711 psi | 88% | 1542 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 39,784 psi | 88% | 1591 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 39,711 psi | 88% | 1913 fps | 91.7% |
| Alliant BE-86² | <<locked>> | 72% | 39,566 psi | 88% | 1614 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 36,738 psi | 82% | 1834 fps | 96.5% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,088 psi | 87% | 1719 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 40,422 psi | 90% | 1604 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 37,855 psi | 84% | 1693 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 72% | 40,582 psi | 90% | 1886 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 38,334 psi | 85% | 1545 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,175 psi | 87% | 1719 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 36,898 psi | 82% | 1539 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 39,842 psi | 89% | 1581 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,188 psi | 83% | 1555 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 38,899 psi | 87% | 1486 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 36,796 psi | 82% | 1939 fps | 91.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,741 psi | 48% | 1247 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 40,553 psi | 90% | 1663 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,100 psi | 80% | 1831 fps | 97.1% |
| Lovex D037.2*² | <<locked>> | 72% | 37,347 psi | 83% | 1847 fps | 93.4% |
| Lovex S020² | <<locked>> | 64% | 37,565 psi | 84% | 1647 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,059 psi | 87% | 1621 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 39,842 psi | 89% | 1624 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,421 psi | 88% | 1601 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,333 psi | 83% | 1552 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 40,074 psi | 89% | 1532 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 39,827 psi | 89% | 1919 fps | 92.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,566 psi | 46% | 1263 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 38,522 psi | 86% | 1693 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 38,667 psi | 86% | 1860 fps | 99% |
| Rottweil P 806² | <<locked>> | 72% | 35,911 psi | 80% | 1785 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 37,347 psi | 83% | 1847 fps | 93.4% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,100 psi | 80% | 1831 fps | 97.1% |
| SNPE Vectan A0² | <<locked>> | 76% | 39,537 psi | 88% | 1677 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 38,754 psi | 86% | 1604 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,145 psi | 85% | 1621 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 39,827 psi | 89% | 1503 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 27,804 psi | 62% | 1680 fps | 89.1% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 40,292 psi | 90% | 1765 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 37,492 psi | 83% | 1617 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 37,144 psi | 83% | 1818 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,448 psi | 81% | 1673 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,205 psi | 89% | 1699 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,233 psi | 87% | 1765 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 38,754 psi | 86% | 1844 fps | 99.4% |
| Vihtavuori N105 | <<locked>> | 88% | 40,321 psi | 90% | 1903 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 34,795 psi | 77% | 1844 fps | 90.1% |
| Vihtavuori N320² | <<locked>> | 64% | 37,115 psi | 83% | 1549 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,015 psi | 87% | 1483 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,260 psi | 83% | 1611 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,187 psi | 80% | 1644 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,145 psi | 85% | 1742 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 37,869 psi | 84% | 1627 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% | 31,169 psi | 69% | 1572 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 30,908 psi | 69% | 1729 fps | 95.2% |
| Accurate No. 9*² | <<locked>> | 64% | 27,296 psi | 61% | 1647 fps | 87.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,313 psi | 67% | 1440 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,456 psi | 61% | 1453 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 23,801 psi | 53% | 1558 fps | 86.7% |
| ADI AP 100² | <<locked>> | 60% | 18,942 psi | 42% | 1388 fps | 95.6% |
| ADI APS 350² | <<locked>> | 60% | 31,009 psi | 69% | 1342 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,950 psi | 67% | 1358 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,965 psi | 67% | 1398 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,851 psi | 73% | 1493 fps | 100% |
| Alliant 2400*² | <<locked>> | 76% | 30,748 psi | 68% | 1742 fps | 87.1% |
| Alliant BE-86² | <<locked>> | 60% | 28,689 psi | 64% | 1457 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 64% | 20,610 psi | 46% | 1470 fps | 87% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,027 psi | 78% | 1657 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,313 psi | 67% | 1457 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,697 psi | 46% | 1381 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,108 psi | 63% | 1654 fps | 99% |
| Alliant RED DOT² | <<locked>> | 60% | 29,138 psi | 65% | 1404 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,369 psi | 63% | 1545 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 29,776 psi | 66% | 1434 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 9.6 gr | 60% | 19,841 psi | 44% | 1263 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,185 psi | 74% | 1499 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,382 psi | 56% | 1276 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 84% | 27,354 psi | 61% | 1742 fps | 85.3% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,008 psi | 22% | 938 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,227 psi | 72% | 1542 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 30,908 psi | 69% | 1729 fps | 95.2% |
| Lovex D037.2*² | <<locked>> | 60% | 23,975 psi | 53% | 1565 fps | 85.4% |
| Lovex S020² | <<locked>> | 60% | 33,011 psi | 73% | 1581 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 25,759 psi | 57% | 1414 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,950 psi | 64% | 1463 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,066 psi | 65% | 1447 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,647 psi | 68% | 1450 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 32,953 psi | 73% | 1434 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 72% | 26,049 psi | 58% | 1647 fps | 85.2% |
| ReloadSwiss RS 14² | 5.6 gr | 60% | 9,471 psi | 21% | 945 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,180 psi | 60% | 1516 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 25,831 psi | 57% | 1604 fps | 94.5% |
| Rottweil P 806² | <<locked>> | 60% | 23,496 psi | 52% | 1552 fps | 99.9% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 23,975 psi | 53% | 1565 fps | 85.4% |
| Shooters World Major Pistol² | <<locked>> | 60% | 30,908 psi | 69% | 1729 fps | 95.2% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,846 psi | 57% | 1460 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,256 psi | 70% | 1496 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,574 psi | 68% | 1509 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,098 psi | 74% | 1407 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 96% | 24,932 psi | 55% | 1611 fps | 86.9% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,669 psi | 50% | 1453 fps | 99.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,211 psi | 67% | 1506 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 32,663 psi | 73% | 1742 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,387 psi | 72% | 1611 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,805 psi | 64% | 1522 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,354 psi | 61% | 1568 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,608 psi | 41% | 1404 fps | 89.9% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,085 psi | 36% | 1375 fps | 91.4% |
| Vihtavuori N110* | <<locked>> | 92% | 27,485 psi | 61% | 1696 fps | 85.6% |
| Vihtavuori N320² | <<locked>> | 60% | 32,938 psi | 73% | 1490 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.5 gr | 60% | 17,042 psi | 38% | 1122 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,228 psi | 74% | 1555 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,892 psi | 64% | 1529 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,685 psi | 53% | 1490 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,311 psi | 61% | 1463 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 .357 | 125gr | Speer TMJ. Hodgdon LilGun delivers the highest muzzle velocity at 1,939 fps; across all powders the maximum-charge window runs from 1,247 fps to 1,939 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 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 46–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 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. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Maximum with the .357 | 125gr | Speer TMJ they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 9, Accurate TCM, Alliant 2400 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.