Load Specifications
Load data in caliber .357 Maximum with .358 | 170gr | Rim Rock SWC?FB bullet and 65 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% | 37,971 psi | 84% | 1575 fps | 91.7% |
| Accurate No. 2² | <<locked>> | 64% | 36,970 psi | 82% | 1352 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 37,492 psi | 83% | 1545 fps | 99.3% |
| Accurate No. 9² | <<locked>> | 72% | 38,261 psi | 85% | 1562 fps | 96.6% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,913 psi | 84% | 1260 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,450 psi | 88% | 1329 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 37,971 psi | 84% | 1552 fps | 97.4% |
| ADI AP 100 | <<locked>> | 84% | 38,537 psi | 86% | 1483 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,654 psi | 90% | 1198 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,929 psi | 89% | 1220 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,466 psi | 90% | 1257 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,072 psi | 82% | 1260 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 36,941 psi | 82% | 1568 fps | 94.1% |
| Alliant BE-86² | <<locked>> | 68% | 36,985 psi | 82% | 1286 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 38,348 psi | 85% | 1555 fps | 99% |
| Alliant Green Dot² | <<locked>> | 68% | 38,000 psi | 85% | 1276 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,073 psi | 87% | 1401 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,681 psi | 84% | 1516 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 38,218 psi | 85% | 1617 fps | 89.4% |
| Alliant RED DOT² | <<locked>> | 72% | 39,291 psi | 87% | 1263 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 40,292 psi | 90% | 1414 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,363 psi | 85% | 1263 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 37,811 psi | 84% | 1266 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,479 psi | 86% | 1283 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,131 psi | 87% | 1211 fps | 100% |
| Hodgdon H110* | <<locked>> | 88% | 39,624 psi | 88% | 1637 fps | 89.1% |
| Hodgdon LilGun | <<locked>> | 92% | 38,638 psi | 86% | 1673 fps | 95.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,408 psi | 50% | 1020 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 37,637 psi | 84% | 1319 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 37,492 psi | 83% | 1545 fps | 99.3% |
| Lovex D037.2² | <<locked>> | 72% | 38,841 psi | 86% | 1568 fps | 96.8% |
| Lovex S020² | <<locked>> | 64% | 38,653 psi | 86% | 1348 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 40,118 psi | 89% | 1329 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 36,999 psi | 82% | 1286 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 40,625 psi | 90% | 1312 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,609 psi | 86% | 1273 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,623 psi | 84% | 1214 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 36,114 psi | 80% | 1565 fps | 94.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,422 psi | 48% | 1040 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 40,408 psi | 90% | 1398 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 40,451 psi | 90% | 1568 fps | 100% |
| Rottweil P 806² | <<locked>> | 72% | 37,623 psi | 84% | 1499 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,841 psi | 86% | 1568 fps | 96.8% |
| Shooters World Major Pistol² | <<locked>> | 64% | 37,492 psi | 83% | 1545 fps | 99.3% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,289 psi | 83% | 1339 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,798 psi | 89% | 1319 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,305 psi | 87% | 1332 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,640 psi | 90% | 1227 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,935 psi | 64% | 1440 fps | 93.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 37,405 psi | 83% | 1414 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,856 psi | 86% | 1329 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 39,233 psi | 87% | 1526 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,710 psi | 84% | 1381 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 37,318 psi | 83% | 1352 fps | 100% |
| Somchem S265*ᴾ | <<locked>> | 100% | 40,306 psi | 90% | 1572 fps | 88% |
| Vihtavuori 3N37² | <<locked>> | 72% | 40,640 psi | 90% | 1463 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 40,596 psi | 90% | 1552 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 37,840 psi | 84% | 1545 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 36,840 psi | 82% | 1588 fps | 94.7% |
| Vihtavuori N320² | <<locked>> | 64% | 37,724 psi | 84% | 1260 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 40,103 psi | 89% | 1214 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,479 psi | 86% | 1322 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 37,637 psi | 84% | 1355 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,552 psi | 88% | 1444 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 39,001 psi | 87% | 1342 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% | 28,601 psi | 64% | 1421 fps | 86.9% |
| Accurate No. 2² | <<locked>> | 60% | 32,445 psi | 72% | 1296 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 32,532 psi | 72% | 1470 fps | 98.3% |
| Accurate No. 9*² | <<locked>> | 60% | 24,801 psi | 55% | 1335 fps | 90.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,922 psi | 69% | 1175 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,456 psi | 63% | 1194 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,889 psi | 55% | 1332 fps | 91.7% |
| ADI AP 100² | <<locked>> | 60% | 19,769 psi | 44% | 1171 fps | 98.6% |
| ADI APS 350² | <<locked>> | 60% | 31,082 psi | 69% | 1086 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,327 psi | 67% | 1106 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,400 psi | 68% | 1138 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,533 psi | 75% | 1217 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 24,801 psi | 55% | 1352 fps | 87.4% |
| Alliant BE-86² | <<locked>> | 60% | 29,718 psi | 66% | 1201 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 19,000 psi | 42% | 1191 fps | 89.8% |
| Alliant Green Dot² | <<locked>> | 60% | 31,111 psi | 69% | 1191 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,538 psi | 48% | 1145 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,414 psi | 65% | 1391 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 33,504 psi | 75% | 1545 fps | 87.1% |
| Alliant RED DOT² | <<locked>> | 60% | 29,907 psi | 67% | 1148 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 29,182 psi | 65% | 1273 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,705 psi | 68% | 1175 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 7.8 gr | 60% | 20,856 psi | 46% | 1043 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,026 psi | 76% | 1234 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,541 psi | 57% | 1037 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 34,751 psi | 77% | 1565 fps | 86.8% |
| Hodgdon LilGun*² | <<locked>> | 76% | 21,495 psi | 48% | 1355 fps | 85.2% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,631 psi | 24% | 778 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,562 psi | 75% | 1270 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 32,532 psi | 72% | 1470 fps | 98.3% |
| Lovex D037.2*² | <<locked>> | 60% | 25,179 psi | 56% | 1342 fps | 90.6% |
| Lovex S020² | <<locked>> | 60% | 34,330 psi | 76% | 1299 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,614 psi | 59% | 1161 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 30,298 psi | 67% | 1204 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,646 psi | 66% | 1181 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,575 psi | 70% | 1188 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,953 psi | 76% | 1171 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 20,552 psi | 46% | 1270 fps | 85.1% |
| ReloadSwiss RS 14² | 4.6 gr | 60% | 10,138 psi | 23% | 787 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,558 psi | 64% | 1253 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 27,253 psi | 61% | 1365 fps | 97.9% |
| Rottweil P 806² | <<locked>> | 60% | 24,656 psi | 55% | 1312 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 25,179 psi | 56% | 1342 fps | 90.6% |
| Shooters World Major Pistol² | <<locked>> | 60% | 32,532 psi | 72% | 1470 fps | 98.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,992 psi | 60% | 1204 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,242 psi | 72% | 1230 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,647 psi | 70% | 1243 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,634 psi | 75% | 1148 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 18,710 psi | 42% | 1217 fps | 85.6% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,714 psi | 53% | 1214 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,546 psi | 70% | 1240 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 34,185 psi | 76% | 1457 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 33,243 psi | 74% | 1325 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 30,284 psi | 67% | 1260 fps | 100% |
| Somchem S265* | <<locked>> | 96% | 36,056 psi | 80% | 1509 fps | 86.1% |
| Vihtavuori 3N37² | <<locked>> | 60% | 28,529 psi | 63% | 1306 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,624 psi | 44% | 1198 fps | 94.7% |
| Vihtavuori N105² | <<locked>> | 60% | 17,172 psi | 38% | 1181 fps | 96.5% |
| Vihtavuori N110* | <<locked>> | 84% | 22,597 psi | 50% | 1335 fps | 86.5% |
| Vihtavuori N320² | <<locked>> | 60% | 34,026 psi | 76% | 1217 fps | 100% |
| Vihtavuori N32C Tin Star² | 6 gr | 60% | 17,477 psi | 39% | 915 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,156 psi | 76% | 1273 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,733 psi | 66% | 1257 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,700 psi | 55% | 1240 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 28,021 psi | 62% | 1204 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 65 powders for .357 Maximum loaded with the .358 | 170gr | Rim Rock SWC?FB. Hodgdon LilGun delivers the highest muzzle velocity at 1,673 fps; across all powders the maximum-charge window runs from 1,020 fps to 1,673 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 19 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 48–90 %, 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 | 170gr | Rim Rock SWC?FB 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. ADI APS 350, ADI APS 450, Baschieri & Pellagri 102 Pistol 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.