Load Specifications
Load data in caliber .357 Maximum with .358 | 155gr | Rim Rock DEWC bullet and 65 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>> | 80% | 35,491 psi | 79% | 1644 fps | 90.4% |
| Accurate No. 2² | <<locked>> | 64% | 37,826 psi | 84% | 1473 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 40,118 psi | 89% | 1696 fps | 99.6% |
| Accurate No. 9² | <<locked>> | 72% | 40,611 psi | 90% | 1709 fps | 97.1% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,928 psi | 87% | 1375 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 36,970 psi | 82% | 1404 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 40,669 psi | 90% | 1699 fps | 97.9% |
| ADI AP 100 | <<locked>> | 84% | 40,118 psi | 89% | 1614 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 38,145 psi | 85% | 1273 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 40,683 psi | 90% | 1332 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 38,247 psi | 85% | 1339 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 38,247 psi | 85% | 1381 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 39,421 psi | 88% | 1716 fps | 94.7% |
| Alliant BE-86² | <<locked>> | 68% | 38,014 psi | 85% | 1404 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 40,379 psi | 90% | 1696 fps | 99.2% |
| Alliant Green Dot² | <<locked>> | 68% | 39,015 psi | 87% | 1394 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 37,115 psi | 83% | 1483 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 39,552 psi | 88% | 1654 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 36,347 psi | 81% | 1693 fps | 88.1% |
| Alliant RED DOT² | <<locked>> | 72% | 40,074 psi | 89% | 1378 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 38,072 psi | 85% | 1499 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 39,465 psi | 88% | 1381 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 38,928 psi | 87% | 1381 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 39,465 psi | 88% | 1394 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 36,463 psi | 81% | 1411 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 40,408 psi | 90% | 1325 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 37,652 psi | 84% | 1716 fps | 87.9% |
| Hodgdon LilGun* | <<locked>> | 88% | 37,086 psi | 82% | 1752 fps | 94.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,380 psi | 52% | 1119 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 38,725 psi | 86% | 1440 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 40,118 psi | 89% | 1696 fps | 99.6% |
| Lovex D037.2² | <<locked>> | 68% | 36,158 psi | 80% | 1640 fps | 95.7% |
| Lovex S020² | <<locked>> | 64% | 40,553 psi | 90% | 1480 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 38,029 psi | 85% | 1414 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 38,754 psi | 86% | 1414 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 37,739 psi | 84% | 1388 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 39,479 psi | 88% | 1388 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 38,508 psi | 86% | 1329 fps | 100% |
| Ramshot Enforcer | <<locked>> | 80% | 39,436 psi | 88% | 1722 fps | 95.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 22,307 psi | 50% | 1138 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 37,782 psi | 84% | 1476 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 68% | 37,275 psi | 83% | 1637 fps | 99.8% |
| ReloadSwiss RS 30*ᴾ | <<locked>> | 100% | 32,982 psi | 73% | 1654 fps | 88.7% |
| Rottweil P 806² | <<locked>> | 72% | 40,393 psi | 90% | 1637 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 68% | 36,158 psi | 80% | 1640 fps | 95.7% |
| Shooters World Major Pistol² | <<locked>> | 64% | 40,118 psi | 89% | 1696 fps | 99.6% |
| SNPE Vectan A0² | <<locked>> | 72% | 38,566 psi | 86% | 1463 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 64% | 36,796 psi | 82% | 1388 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 36,289 psi | 81% | 1404 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 37,565 psi | 84% | 1296 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 31,502 psi | 70% | 1581 fps | 94.7% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 39,247 psi | 87% | 1545 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 39,972 psi | 89% | 1450 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 38,928 psi | 87% | 1506 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 39,001 psi | 87% | 1480 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 37,956 psi | 84% | 1542 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 38,653 psi | 86% | 1640 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 40,422 psi | 90% | 1686 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 40,292 psi | 90% | 1745 fps | 95.6% |
| Vihtavuori N320² | <<locked>> | 64% | 39,479 psi | 88% | 1388 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 38,319 psi | 85% | 1296 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 39,943 psi | 89% | 1447 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 39,146 psi | 87% | 1483 fps | 100% |
| Vihtavuori N350² | <<locked>> | 72% | 37,159 psi | 83% | 1526 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 40,524 psi | 90% | 1463 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>> | 72% | 26,992 psi | 60% | 1483 fps | 85.3% |
| Accurate No. 2² | <<locked>> | 60% | 33,852 psi | 75% | 1421 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 34,592 psi | 77% | 1611 fps | 98.6% |
| Accurate No. 9*² | <<locked>> | 60% | 26,179 psi | 58% | 1457 fps | 90.8% |
| Accurate Solo 1000² | <<locked>> | 60% | 32,198 psi | 72% | 1289 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 29,356 psi | 65% | 1302 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 26,484 psi | 59% | 1457 fps | 92.2% |
| ADI AP 100² | <<locked>> | 60% | 20,987 psi | 47% | 1283 fps | 98.8% |
| ADI APS 350² | <<locked>> | 60% | 31,865 psi | 71% | 1191 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 31,169 psi | 69% | 1211 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 31,488 psi | 70% | 1247 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 34,519 psi | 77% | 1332 fps | 100% |
| Alliant 2400*² | <<locked>> | 64% | 23,424 psi | 52% | 1407 fps | 85.6% |
| Alliant BE-86² | <<locked>> | 60% | 30,560 psi | 68% | 1306 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 20,015 psi | 45% | 1299 fps | 90.2% |
| Alliant Green Dot² | <<locked>> | 60% | 31,749 psi | 71% | 1296 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 22,466 psi | 50% | 1250 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 31,082 psi | 69% | 1522 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 80% | 31,618 psi | 70% | 1608 fps | 85.5% |
| Alliant RED DOT² | <<locked>> | 60% | 30,618 psi | 68% | 1253 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 30,734 psi | 68% | 1398 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 31,502 psi | 70% | 1283 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 21,596 psi | 48% | 1138 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 35,505 psi | 79% | 1348 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 32,663 psi | 73% | 1358 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 26,295 psi | 58% | 1135 fps | 100% |
| Hodgdon H110* | <<locked>> | 80% | 32,750 psi | 73% | 1631 fps | 85.2% |
| Hodgdon LilGun*² | <<locked>> | 76% | 23,830 psi | 53% | 1496 fps | 86.7% |
| Hodgdon TrailBoss² | 5.2 gr | 60% | 10,834 psi | 24% | 846 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 34,548 psi | 77% | 1385 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 34,592 psi | 77% | 1611 fps | 98.6% |
| Lovex D037.2*² | <<locked>> | 60% | 26,905 psi | 60% | 1470 fps | 91.3% |
| Lovex S020² | <<locked>> | 60% | 36,013 psi | 80% | 1427 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 28,021 psi | 62% | 1276 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 31,111 psi | 69% | 1312 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 30,690 psi | 68% | 1293 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 32,126 psi | 71% | 1293 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,693 psi | 77% | 1280 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 22,423 psi | 50% | 1398 fps | 86.2% |
| ReloadSwiss RS 14² | 5.3 gr | 60% | 10,312 psi | 23% | 856 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 29,878 psi | 66% | 1371 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 28,790 psi | 64% | 1493 fps | 98.2% |
| ReloadSwiss RS 30* | <<locked>> | 96% | 29,515 psi | 66% | 1581 fps | 86.1% |
| Rottweil P 806² | <<locked>> | 60% | 26,716 psi | 59% | 1437 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 26,905 psi | 60% | 1470 fps | 91.3% |
| Shooters World Major Pistol² | <<locked>> | 60% | 34,592 psi | 77% | 1611 fps | 98.6% |
| SNPE Vectan A0² | <<locked>> | 60% | 27,891 psi | 62% | 1316 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 33,054 psi | 74% | 1339 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 32,518 psi | 72% | 1355 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 34,606 psi | 77% | 1257 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 20,204 psi | 45% | 1339 fps | 86.6% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 24,671 psi | 55% | 1322 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 32,401 psi | 72% | 1355 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 34,911 psi | 78% | 1453 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 31,067 psi | 69% | 1371 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 29,689 psi | 66% | 1424 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 20,900 psi | 46% | 1312 fps | 95.2% |
| Vihtavuori N105² | <<locked>> | 60% | 18,304 psi | 41% | 1289 fps | 96.7% |
| Vihtavuori N110* | <<locked>> | 84% | 24,323 psi | 54% | 1460 fps | 87.2% |
| Vihtavuori N320² | <<locked>> | 60% | 34,911 psi | 78% | 1332 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.1 gr | 60% | 18,405 psi | 41% | 1007 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 35,505 psi | 79% | 1394 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 30,951 psi | 69% | 1375 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 25,947 psi | 58% | 1355 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 29,269 psi | 65% | 1316 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 10 powders for .357 Maximum loaded with the .358 | 155gr | Rim Rock DEWC. Hodgdon LilGun delivers the highest muzzle velocity at 1,752 fps; across all powders the maximum-charge window runs from 1,119 fps to 1,752 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 10 of the 10 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 50–90 %, 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 .358 | 155gr | Rim Rock DEWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon LilGun, SNPE Vectan BA6 1/2 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 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.