Load Specifications
Load data in caliber .357 Maximum with .357 | 135gr | Speer HPSB GD bullet and 63 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 4100* | <<locked>> | 84% | 36,201 psi | 81% | 1759 fps | 88% |
| Accurate No. 2² | <<locked>> | 68% | 40,611 psi | 90% | 1624 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,100 psi | 80% | 1752 fps | 97.7% |
| Accurate No. 9*² | <<locked>> | 72% | 36,434 psi | 81% | 1755 fps | 93.8% |
| Accurate Solo 1000² | <<locked>> | 68% | 36,999 psi | 82% | 1463 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,276 psi | 85% | 1539 fps | 100% |
| Accurate TCM*² | <<locked>> | 72% | 36,622 psi | 81% | 1752 fps | 94.9% |
| ADI AP 100 | <<locked>> | 84% | 37,391 psi | 83% | 1699 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,118 psi | 89% | 1398 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,218 psi | 87% | 1417 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,682 psi | 88% | 1463 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 39,958 psi | 89% | 1516 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 40,001 psi | 89% | 1841 fps | 92.7% |
| Alliant BE-86² | <<locked>> | 72% | 40,074 psi | 89% | 1542 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,130 psi | 83% | 1762 fps | 97.2% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,595 psi | 88% | 1644 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 36,941 psi | 82% | 1480 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,058 psi | 85% | 1617 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,782 psi | 82% | 1739 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 38,798 psi | 86% | 1476 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,465 psi | 88% | 1640 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,217 psi | 83% | 1467 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,480 psi | 90% | 1512 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,565 psi | 84% | 1483 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 38,928 psi | 87% | 1411 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 36,767 psi | 82% | 1867 fps | 92.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,944 psi | 49% | 1184 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 40,553 psi | 90% | 1581 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,100 psi | 80% | 1752 fps | 97.7% |
| Lovex D037.2*² | <<locked>> | 72% | 37,898 psi | 84% | 1778 fps | 94.3% |
| Lovex S020² | <<locked>> | 64% | 37,681 psi | 84% | 1568 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,146 psi | 87% | 1542 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 39,856 psi | 89% | 1542 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,247 psi | 87% | 1519 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,420 psi | 83% | 1473 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 40,640 psi | 90% | 1463 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 40,074 psi | 89% | 1847 fps | 93.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,784 psi | 46% | 1204 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,001 psi | 87% | 1614 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 38,798 psi | 86% | 1781 fps | 99.3% |
| Rottweil P 806² | <<locked>> | 72% | 36,129 psi | 80% | 1709 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 37,898 psi | 84% | 1778 fps | 94.3% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,100 psi | 80% | 1752 fps | 97.7% |
| SNPE Vectan A0² | <<locked>> | 76% | 39,972 psi | 89% | 1601 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,044 psi | 87% | 1529 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,435 psi | 85% | 1545 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 39,827 psi | 89% | 1427 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 27,746 psi | 62% | 1611 fps | 90.1% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 40,466 psi | 90% | 1683 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,087 psi | 85% | 1545 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 37,681 psi | 84% | 1745 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,753 psi | 82% | 1598 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,553 psi | 90% | 1617 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,769 psi | 88% | 1690 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,073 psi | 87% | 1768 fps | 99.7% |
| Vihtavuori N105 | <<locked>> | 84% | 36,260 psi | 81% | 1759 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,099 psi | 78% | 1778 fps | 91.3% |
| Vihtavuori N320² | <<locked>> | 64% | 37,217 psi | 83% | 1470 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,131 psi | 87% | 1411 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,855 psi | 84% | 1539 fps | 100% |
| Vihtavuori N340² | <<locked>> | 72% | 40,683 psi | 90% | 1621 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,522 psi | 86% | 1663 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 37,913 psi | 84% | 1549 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 4100* | <<locked>> | 80% | 31,821 psi | 71% | 1680 fps | 85.6% |
| Accurate No. 2² | <<locked>> | 60% | 31,415 psi | 70% | 1499 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,024 psi | 69% | 1660 fps | 95.9% |
| Accurate No. 9*² | <<locked>> | 60% | 23,757 psi | 53% | 1496 fps | 86.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,516 psi | 68% | 1371 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,876 psi | 62% | 1388 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 23,786 psi | 53% | 1493 fps | 87.7% |
| ADI AP 100² | <<locked>> | 60% | 19,203 psi | 43% | 1332 fps | 96.5% |
| ADI APS 350² | <<locked>> | 60% | 30,748 psi | 68% | 1270 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,936 psi | 67% | 1289 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,965 psi | 67% | 1329 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,648 psi | 73% | 1414 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 27,470 psi | 61% | 1601 fps | 86% |
| Alliant BE-86² | <<locked>> | 60% | 28,529 psi | 63% | 1385 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,130 psi | 40% | 1332 fps | 85.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,273 psi | 78% | 1581 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,545 psi | 68% | 1388 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,784 psi | 46% | 1316 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,398 psi | 63% | 1588 fps | 99.4% |
| Alliant RED DOT² | <<locked>> | 60% | 29,037 psi | 65% | 1332 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,514 psi | 63% | 1473 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,197 psi | 67% | 1368 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 9.1 gr | 60% | 20,088 psi | 45% | 1204 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,330 psi | 74% | 1430 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,193 psi | 56% | 1211 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 84% | 27,615 psi | 61% | 1683 fps | 86.7% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,109 psi | 22% | 896 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,895 psi | 73% | 1476 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,024 psi | 69% | 1660 fps | 95.9% |
| Lovex D037.2*² | <<locked>> | 60% | 24,091 psi | 54% | 1503 fps | 86.5% |
| Lovex S020² | <<locked>> | 60% | 33,431 psi | 74% | 1506 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,121 psi | 58% | 1352 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,935 psi | 64% | 1391 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,863 psi | 64% | 1371 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,893 psi | 69% | 1381 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,069 psi | 74% | 1362 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 72% | 26,324 psi | 59% | 1588 fps | 86.5% |
| ReloadSwiss RS 14² | 5.3 gr | 60% | 9,587 psi | 21% | 902 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,470 psi | 61% | 1444 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,121 psi | 58% | 1542 fps | 95.4% |
| Rottweil P 806² | <<locked>> | 60% | 23,743 psi | 53% | 1493 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,091 psi | 54% | 1503 fps | 86.5% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,024 psi | 69% | 1660 fps | 95.9% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,962 psi | 58% | 1388 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,604 psi | 70% | 1427 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,937 psi | 69% | 1440 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,286 psi | 74% | 1339 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 92% | 22,350 psi | 50% | 1483 fps | 85.7% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,076 psi | 51% | 1394 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,342 psi | 67% | 1434 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 32,924 psi | 73% | 1670 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,460 psi | 72% | 1532 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,950 psi | 64% | 1450 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,195 psi | 60% | 1493 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,840 psi | 42% | 1348 fps | 91.2% |
| Vihtavuori N105*² | <<locked>> | 60% | 15,998 psi | 36% | 1316 fps | 92.5% |
| Vihtavuori N110* | <<locked>> | 92% | 27,673 psi | 62% | 1634 fps | 86.8% |
| Vihtavuori N320² | <<locked>> | 60% | 33,402 psi | 74% | 1421 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.1 gr | 60% | 17,231 psi | 38% | 1070 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,576 psi | 75% | 1483 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,211 psi | 65% | 1460 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,714 psi | 53% | 1421 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,238 psi | 61% | 1391 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 63 powders for .357 Maximum loaded with the .357 | 135gr | Speer HPSB GD. Hodgdon LilGun delivers the highest muzzle velocity at 1,867 fps; across all powders the maximum-charge window runs from 1,184 fps to 1,867 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 of the 63 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 | 135gr | Speer HPSB GD they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Accurate No. 9, Accurate TCM 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.