Load Specifications
Load data in caliber .357 Maximum with .358 | 148gr | Speer LHBWC 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% | 36,622 psi | 81% | 1699 fps | 89.9% |
| Accurate No. 2² | <<locked>> | 68% | 40,553 psi | 90% | 1545 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,492 psi | 81% | 1683 fps | 98.6% |
| Accurate No. 9² | <<locked>> | 72% | 37,144 psi | 83% | 1696 fps | 95.3% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,753 psi | 84% | 1401 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,566 psi | 86% | 1467 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 37,260 psi | 83% | 1693 fps | 96.3% |
| ADI AP 100 | <<locked>> | 84% | 37,710 psi | 84% | 1624 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,045 psi | 89% | 1329 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,320 psi | 87% | 1352 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,465 psi | 88% | 1391 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 39,842 psi | 89% | 1440 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 40,335 psi | 90% | 1772 fps | 94.2% |
| Alliant BE-86² | <<locked>> | 72% | 39,856 psi | 89% | 1463 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,072 psi | 82% | 1686 fps | 98.1% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,103 psi | 89% | 1565 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 40,596 psi | 90% | 1453 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,334 psi | 85% | 1542 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,941 psi | 82% | 1663 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 38,537 psi | 86% | 1401 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,697 psi | 88% | 1565 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,304 psi | 83% | 1394 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,292 psi | 90% | 1437 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,463 psi | 83% | 1411 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,015 psi | 87% | 1345 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 37,376 psi | 83% | 1798 fps | 94% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,277 psi | 47% | 1122 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 40,495 psi | 90% | 1506 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,492 psi | 81% | 1683 fps | 98.6% |
| Lovex D037.2² | <<locked>> | 72% | 38,174 psi | 85% | 1713 fps | 95.7% |
| Lovex S020² | <<locked>> | 64% | 37,913 psi | 84% | 1493 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,508 psi | 88% | 1473 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 39,813 psi | 89% | 1470 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,465 psi | 88% | 1447 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,478 psi | 83% | 1404 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 40,669 psi | 90% | 1391 fps | 100% |
| Ramshot Enforcer | <<locked>> | 84% | 40,683 psi | 90% | 1781 fps | 95.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 19,856 psi | 44% | 1135 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 38,899 psi | 87% | 1535 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,378 psi | 88% | 1713 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 72% | 35,955 psi | 80% | 1631 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,174 psi | 85% | 1713 fps | 95.7% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,492 psi | 81% | 1683 fps | 98.6% |
| SNPE Vectan A0² | <<locked>> | 76% | 40,640 psi | 90% | 1529 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,494 psi | 88% | 1460 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,986 psi | 87% | 1476 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,582 psi | 90% | 1365 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 27,891 psi | 62% | 1552 fps | 91.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 36,405 psi | 81% | 1552 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,334 psi | 85% | 1473 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 37,608 psi | 84% | 1663 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,463 psi | 81% | 1516 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,335 psi | 90% | 1539 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,987 psi | 89% | 1611 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,624 psi | 88% | 1696 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 36,840 psi | 82% | 1686 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,650 psi | 79% | 1716 fps | 93% |
| Vihtavuori N320² | <<locked>> | 64% | 37,144 psi | 83% | 1398 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,073 psi | 87% | 1342 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,391 psi | 83% | 1460 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,680 psi | 82% | 1493 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,725 psi | 86% | 1588 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,247 psi | 85% | 1480 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% | 31,531 psi | 70% | 1611 fps | 87.2% |
| Accurate No. 2² | <<locked>> | 60% | 31,604 psi | 70% | 1427 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,111 psi | 69% | 1591 fps | 97% |
| Accurate No. 9*² | <<locked>> | 60% | 23,235 psi | 52% | 1427 fps | 87.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,371 psi | 68% | 1299 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,702 psi | 62% | 1319 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 23,583 psi | 52% | 1430 fps | 89.2% |
| ADI AP 100² | <<locked>> | 60% | 18,942 psi | 42% | 1273 fps | 97.3% |
| ADI APS 350² | <<locked>> | 60% | 31,009 psi | 69% | 1211 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,733 psi | 66% | 1224 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,008 psi | 67% | 1266 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,851 psi | 73% | 1352 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 27,064 psi | 60% | 1532 fps | 87.5% |
| Alliant BE-86² | <<locked>> | 60% | 28,369 psi | 63% | 1316 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 17,738 psi | 39% | 1273 fps | 86.8% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,563 psi | 79% | 1506 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,095 psi | 67% | 1312 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,131 psi | 45% | 1247 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,601 psi | 64% | 1519 fps | 99.8% |
| Alliant RED DOT² | <<locked>> | 60% | 29,022 psi | 65% | 1270 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,181 psi | 63% | 1398 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 29,965 psi | 67% | 1299 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.9 gr | 60% | 19,522 psi | 43% | 1138 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,040 psi | 73% | 1358 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,324 psi | 56% | 1152 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 23,728 psi | 53% | 1532 fps | 85.3% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 9,239 psi | 21% | 840 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,503 psi | 72% | 1401 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,111 psi | 69% | 1591 fps | 97% |
| Lovex D037.2*² | <<locked>> | 60% | 23,931 psi | 53% | 1444 fps | 88.1% |
| Lovex S020² | <<locked>> | 60% | 33,417 psi | 74% | 1437 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 25,889 psi | 58% | 1283 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,906 psi | 64% | 1325 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,182 psi | 65% | 1309 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,690 psi | 68% | 1312 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,417 psi | 74% | 1299 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 72% | 26,353 psi | 59% | 1526 fps | 88.2% |
| ReloadSwiss RS 14² | 5.2 gr | 60% | 8,543 psi | 19% | 840 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,427 psi | 61% | 1375 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 25,918 psi | 58% | 1476 fps | 96.5% |
| Rottweil P 806² | <<locked>> | 60% | 22,843 psi | 51% | 1411 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 23,931 psi | 53% | 1444 fps | 88.1% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,111 psi | 69% | 1591 fps | 97% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,382 psi | 59% | 1329 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,720 psi | 71% | 1362 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,125 psi | 69% | 1375 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,199 psi | 74% | 1273 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 92% | 22,104 psi | 49% | 1424 fps | 87.3% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,974 psi | 51% | 1329 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,197 psi | 67% | 1362 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 32,619 psi | 73% | 1588 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,503 psi | 72% | 1463 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,819 psi | 64% | 1378 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,224 psi | 61% | 1424 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,507 psi | 41% | 1289 fps | 92.4% |
| Vihtavuori N105*² | <<locked>> | 60% | 15,592 psi | 35% | 1253 fps | 93.5% |
| Vihtavuori N110* | <<locked>> | 88% | 24,178 psi | 54% | 1496 fps | 85.9% |
| Vihtavuori N320² | <<locked>> | 60% | 33,199 psi | 74% | 1348 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.9 gr | 60% | 16,259 psi | 36% | 1004 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,576 psi | 75% | 1411 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,124 psi | 65% | 1388 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,598 psi | 52% | 1355 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,021 psi | 60% | 1322 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 .358 | 148gr | Speer LHBWC. Hodgdon LilGun delivers the highest muzzle velocity at 1,798 fps; across all powders the maximum-charge window runs from 1,122 fps to 1,798 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 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 44–90 %, 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 .358 | 148gr | Speer LHBWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Hodgdon LilGun 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.