Load Specifications
Load data in caliber .357 Maximum with .357 | 148gr | CamPro HBWC bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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% | 39,465 psi | 88% | 1768 fps | 92% |
| Accurate No. 2² | <<locked>> | 64% | 37,144 psi | 83% | 1526 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 38,972 psi | 87% | 1745 fps | 99.4% |
| Accurate No. 9² | <<locked>> | 72% | 39,552 psi | 88% | 1759 fps | 96.7% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,812 psi | 86% | 1434 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 40,016 psi | 89% | 1503 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 39,305 psi | 87% | 1749 fps | 97.5% |
| ADI AP 100 | <<locked>> | 84% | 39,755 psi | 88% | 1677 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 37,391 psi | 83% | 1319 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 40,132 psi | 89% | 1385 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,553 psi | 90% | 1424 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,144 psi | 83% | 1427 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 37,782 psi | 84% | 1759 fps | 94% |
| Alliant BE-86² | <<locked>> | 68% | 37,289 psi | 83% | 1453 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 39,450 psi | 88% | 1749 fps | 99% |
| Alliant Green Dot² | <<locked>> | 68% | 37,855 psi | 84% | 1440 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,537 psi | 88% | 1575 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 38,827 psi | 86% | 1713 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 40,567 psi | 90% | 1824 fps | 90% |
| Alliant RED DOT² | <<locked>> | 72% | 39,160 psi | 87% | 1430 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 36,840 psi | 82% | 1549 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,841 psi | 86% | 1434 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 38,043 psi | 85% | 1430 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,682 psi | 86% | 1447 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,755 psi | 88% | 1375 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 88% | 35,752 psi | 80% | 1791 fps | 93.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,394 psi | 50% | 1158 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 37,666 psi | 84% | 1493 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 38,972 psi | 87% | 1745 fps | 99.4% |
| Lovex D037.2² | <<locked>> | 72% | 40,567 psi | 90% | 1772 fps | 97% |
| Lovex S020² | <<locked>> | 64% | 39,349 psi | 88% | 1529 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 37,217 psi | 83% | 1463 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 37,608 psi | 84% | 1463 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 37,304 psi | 83% | 1440 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 39,175 psi | 87% | 1444 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,942 psi | 84% | 1378 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 37,681 psi | 84% | 1759 fps | 94.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,581 psi | 46% | 1165 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 36,579 psi | 81% | 1526 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 68% | 36,448 psi | 81% | 1690 fps | 99.7% |
| Rottweil P 806² | <<locked>> | 72% | 38,319 psi | 85% | 1677 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 40,567 psi | 90% | 1772 fps | 97% |
| Shooters World Major Pistol² | <<locked>> | 64% | 38,972 psi | 87% | 1745 fps | 99.4% |
| SNPE Vectan A0² | <<locked>> | 72% | 38,159 psi | 85% | 1519 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 40,379 psi | 90% | 1490 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,929 psi | 89% | 1509 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 37,188 psi | 83% | 1345 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 30,095 psi | 67% | 1614 fps | 93.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 38,450 psi | 86% | 1598 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 39,610 psi | 88% | 1509 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 39,595 psi | 88% | 1713 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 38,159 psi | 85% | 1558 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 37,927 psi | 84% | 1529 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 37,246 psi | 83% | 1598 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 37,507 psi | 83% | 1690 fps | 99.9% |
| Vihtavuori N105 | <<locked>> | 84% | 39,479 psi | 88% | 1742 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 38,885 psi | 86% | 1788 fps | 95% |
| Vihtavuori N320² | <<locked>> | 64% | 38,348 psi | 85% | 1434 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,987 psi | 89% | 1371 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,943 psi | 87% | 1496 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 38,551 psi | 86% | 1535 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 40,611 psi | 90% | 1631 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 39,508 psi | 88% | 1512 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*² | <<locked>> | 76% | 29,414 psi | 65% | 1591 fps | 86.7% |
| Accurate No. 2² | <<locked>> | 60% | 32,721 psi | 73% | 1463 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 33,199 psi | 74% | 1650 fps | 98.2% |
| Accurate No. 9*² | <<locked>> | 60% | 24,903 psi | 55% | 1486 fps | 89.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,198 psi | 69% | 1332 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,993 psi | 64% | 1355 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 25,019 psi | 56% | 1483 fps | 91.1% |
| ADI AP 100² | <<locked>> | 60% | 20,059 psi | 45% | 1319 fps | 98.3% |
| ADI APS 350² | <<locked>> | 60% | 31,415 psi | 70% | 1237 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,501 psi | 68% | 1253 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,400 psi | 68% | 1289 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,605 psi | 75% | 1381 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 25,106 psi | 56% | 1506 fps | 86.8% |
| Alliant BE-86² | <<locked>> | 60% | 29,646 psi | 66% | 1352 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,797 psi | 42% | 1322 fps | 88.7% |
| Alliant Green Dot² | <<locked>> | 60% | 30,966 psi | 69% | 1345 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,103 psi | 47% | 1280 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,733 psi | 66% | 1562 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 34,882 psi | 78% | 1729 fps | 87.2% |
| Alliant RED DOT² | <<locked>> | 60% | 29,559 psi | 66% | 1296 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 29,341 psi | 65% | 1437 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 31,227 psi | 69% | 1335 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 20,552 psi | 46% | 1175 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,432 psi | 77% | 1394 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,773 psi | 57% | 1178 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 25,991 psi | 58% | 1601 fps | 88.1% |
| Hodgdon TrailBoss² | 5.5 gr | 60% | 9,732 psi | 22% | 863 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,663 psi | 75% | 1437 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 33,199 psi | 74% | 1650 fps | 98.2% |
| Lovex D037.2*² | <<locked>> | 60% | 25,614 psi | 57% | 1499 fps | 90.1% |
| Lovex S020² | <<locked>> | 60% | 35,027 psi | 78% | 1476 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 27,122 psi | 60% | 1319 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,718 psi | 66% | 1355 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,994 psi | 67% | 1339 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,531 psi | 70% | 1342 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,272 psi | 76% | 1332 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 24,308 psi | 54% | 1499 fps | 87.4% |
| ReloadSwiss RS 14² | 5.6 gr | 60% | 8,992 psi | 20% | 866 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,529 psi | 63% | 1411 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 27,456 psi | 61% | 1526 fps | 97.6% |
| Rottweil P 806² | <<locked>> | 60% | 24,526 psi | 55% | 1460 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 25,614 psi | 57% | 1499 fps | 90.1% |
| Shooters World Major Pistol² | <<locked>> | 60% | 33,199 psi | 74% | 1650 fps | 98.2% |
| SNPE Vectan A0² | <<locked>> | 60% | 27,398 psi | 61% | 1365 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,430 psi | 72% | 1388 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,908 psi | 71% | 1404 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,765 psi | 75% | 1299 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 21,176 psi | 47% | 1417 fps | 87.3% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 24,033 psi | 53% | 1368 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,807 psi | 71% | 1404 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 34,693 psi | 77% | 1640 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 33,794 psi | 75% | 1499 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 30,385 psi | 68% | 1421 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 28,776 psi | 64% | 1470 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,392 psi | 43% | 1332 fps | 93.8% |
| Vihtavuori N105² | <<locked>> | 60% | 16,969 psi | 38% | 1306 fps | 95.3% |
| Vihtavuori N110* | <<locked>> | 84% | 23,177 psi | 52% | 1490 fps | 85.9% |
| Vihtavuori N320² | <<locked>> | 60% | 34,577 psi | 77% | 1385 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.4 gr | 60% | 16,897 psi | 38% | 1030 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,679 psi | 77% | 1444 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 30,153 psi | 67% | 1421 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,874 psi | 55% | 1394 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 28,210 psi | 63% | 1358 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 | 148gr | CamPro HBWC. Alliant Power Pro 300-MP delivers the highest muzzle velocity at 1,824 fps; across all powders the maximum-charge window runs from 1,158 fps to 1,824 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. Vihtavuori N32C Tin Star, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .357 Maximum with the .357 | 148gr | CamPro HBWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Alliant Power Pro 300-MP 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.