Load Specifications
Load data in caliber .357 Maximum with .357 | 148gr | H&N WC HS bullet and 66 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% | 37,811 psi | 84% | 1732 fps | 90.9% |
| Accurate No. 2² | <<locked>> | 64% | 36,579 psi | 81% | 1506 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 37,710 psi | 84% | 1716 fps | 99% |
| Accurate No. 9² | <<locked>> | 72% | 38,130 psi | 85% | 1726 fps | 96% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,159 psi | 85% | 1414 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,523 psi | 88% | 1490 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 38,261 psi | 85% | 1722 fps | 96.9% |
| ADI AP 100 | <<locked>> | 84% | 38,696 psi | 86% | 1650 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,480 psi | 90% | 1345 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,610 psi | 88% | 1365 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,885 psi | 89% | 1407 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,043 psi | 82% | 1417 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 36,767 psi | 82% | 1729 fps | 93.2% |
| Alliant BE-86² | <<locked>> | 72% | 40,451 psi | 90% | 1483 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 38,232 psi | 85% | 1719 fps | 98.6% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,437 psi | 90% | 1581 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 38,276 psi | 85% | 1427 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,885 psi | 86% | 1562 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,536 psi | 83% | 1683 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 38,566 psi | 86% | 1781 fps | 88.7% |
| Alliant RED DOT² | <<locked>> | 72% | 39,044 psi | 87% | 1417 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,900 psi | 89% | 1578 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,666 psi | 84% | 1411 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 37,347 psi | 83% | 1414 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,276 psi | 85% | 1430 fps | 100% |
| Hodgdon Clays² | <<locked>> | 68% | 38,101 psi | 85% | 1329 fps | 100% |
| Hodgdon H110* | <<locked>> | 88% | 40,045 psi | 89% | 1808 fps | 88.4% |
| Hodgdon LilGun | <<locked>> | 92% | 39,204 psi | 87% | 1844 fps | 95.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,741 psi | 48% | 1138 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 37,072 psi | 82% | 1473 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 37,710 psi | 84% | 1716 fps | 99% |
| Lovex D037.2² | <<locked>> | 72% | 39,131 psi | 87% | 1739 fps | 96.3% |
| Lovex S020² | <<locked>> | 64% | 38,841 psi | 86% | 1516 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 40,335 psi | 90% | 1493 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 36,361 psi | 81% | 1437 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 40,393 psi | 90% | 1470 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,537 psi | 86% | 1427 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,159 psi | 83% | 1362 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 36,361 psi | 81% | 1726 fps | 94.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,320 psi | 45% | 1152 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,726 psi | 88% | 1555 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 40,205 psi | 89% | 1736 fps | 99.9% |
| Rottweil P 806² | <<locked>> | 72% | 36,608 psi | 81% | 1647 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 39,131 psi | 87% | 1739 fps | 96.3% |
| Shooters World Major Pistol² | <<locked>> | 64% | 37,710 psi | 84% | 1716 fps | 99% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,231 psi | 83% | 1499 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,566 psi | 88% | 1473 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,088 psi | 87% | 1490 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 37,173 psi | 83% | 1335 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,993 psi | 64% | 1588 fps | 93% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 37,376 psi | 83% | 1575 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,580 psi | 86% | 1486 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,827 psi | 86% | 1690 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,202 psi | 83% | 1539 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 36,912 psi | 82% | 1506 fps | 100% |
| Somchem S265*ᴾ | <<locked>> | 100% | 39,769 psi | 88% | 1729 fps | 87.2% |
| Vihtavuori 3N37² | <<locked>> | 68% | 35,940 psi | 80% | 1572 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 40,408 psi | 90% | 1719 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 37,811 psi | 84% | 1713 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 37,028 psi | 82% | 1752 fps | 94% |
| Vihtavuori N320² | <<locked>> | 64% | 37,608 psi | 84% | 1417 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,726 psi | 88% | 1362 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,377 psi | 85% | 1483 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 37,521 psi | 83% | 1516 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,900 psi | 89% | 1614 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,812 psi | 86% | 1496 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% | 28,239 psi | 63% | 1562 fps | 85.6% |
| Accurate No. 2² | <<locked>> | 60% | 32,039 psi | 71% | 1447 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,894 psi | 71% | 1621 fps | 97.6% |
| Accurate No. 9*² | <<locked>> | 60% | 24,236 psi | 54% | 1463 fps | 88.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,937 psi | 69% | 1319 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,224 psi | 63% | 1335 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,265 psi | 54% | 1457 fps | 90.2% |
| ADI AP 100² | <<locked>> | 60% | 19,261 psi | 43% | 1289 fps | 97.7% |
| ADI APS 350² | <<locked>> | 60% | 31,067 psi | 69% | 1220 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,269 psi | 67% | 1240 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,066 psi | 67% | 1276 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,388 psi | 74% | 1368 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 24,395 psi | 54% | 1483 fps | 85.8% |
| Alliant BE-86² | <<locked>> | 60% | 29,167 psi | 65% | 1335 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,217 psi | 41% | 1299 fps | 87.8% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,998 psi | 80% | 1522 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 31,778 psi | 71% | 1339 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,900 psi | 46% | 1270 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,327 psi | 65% | 1545 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 33,373 psi | 74% | 1693 fps | 85.9% |
| Alliant RED DOT² | <<locked>> | 60% | 29,138 psi | 65% | 1280 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,631 psi | 64% | 1417 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,472 psi | 68% | 1316 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 9.2 gr | 60% | 19,943 psi | 44% | 1155 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,939 psi | 75% | 1378 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 31,734 psi | 71% | 1243 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 34,664 psi | 77% | 1719 fps | 85.7% |
| Hodgdon LilGun* | <<locked>> | 80% | 24,801 psi | 55% | 1568 fps | 86.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 9,529 psi | 21% | 853 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,953 psi | 73% | 1417 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,894 psi | 71% | 1621 fps | 97.6% |
| Lovex D037.2*² | <<locked>> | 60% | 24,569 psi | 55% | 1470 fps | 89.1% |
| Lovex S020² | <<locked>> | 60% | 33,808 psi | 75% | 1450 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,368 psi | 59% | 1299 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,443 psi | 65% | 1345 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,182 psi | 65% | 1319 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,270 psi | 70% | 1329 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,402 psi | 74% | 1312 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,337 psi | 52% | 1470 fps | 86.3% |
| ReloadSwiss RS 14² | 5.4 gr | 60% | 8,804 psi | 20% | 856 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,862 psi | 62% | 1391 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,847 psi | 60% | 1506 fps | 97.1% |
| Rottweil P 806² | <<locked>> | 60% | 23,641 psi | 53% | 1437 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,569 psi | 55% | 1470 fps | 89.1% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,894 psi | 71% | 1621 fps | 97.6% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,774 psi | 60% | 1345 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,981 psi | 71% | 1375 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,415 psi | 70% | 1388 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,634 psi | 75% | 1289 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,436 psi | 45% | 1391 fps | 86.2% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,235 psi | 52% | 1345 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,169 psi | 69% | 1388 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,837 psi | 75% | 1617 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 33,344 psi | 74% | 1486 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,747 psi | 66% | 1404 fps | 100% |
| Somchem S265* | <<locked>> | 96% | 35,592 psi | 79% | 1663 fps | 85.1% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,934 psi | 62% | 1447 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,043 psi | 42% | 1316 fps | 93.2% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,201 psi | 36% | 1280 fps | 94.4% |
| Vihtavuori N110* | <<locked>> | 88% | 25,092 psi | 56% | 1526 fps | 87.1% |
| Vihtavuori N320² | <<locked>> | 60% | 33,750 psi | 75% | 1365 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.2 gr | 60% | 16,839 psi | 37% | 1024 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,011 psi | 76% | 1427 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,544 psi | 66% | 1404 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,366 psi | 54% | 1378 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,760 psi | 62% | 1345 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 66 powders for .357 Maximum loaded with the .357 | 148gr | H&N WC HS. Hodgdon LilGun delivers the highest muzzle velocity at 1,844 fps; across all powders the maximum-charge window runs from 1,138 fps to 1,844 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 45–90 %, 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 | 148gr | H&N WC HS 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.