Load Specifications
Load data in caliber .357 Mag. with .358 | 158gr | LEE Mold C358-158-SWC bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori N105 and ADI AP 100.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 39,233 psi | 90% | 1280 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 36,825 psi | 85% | 1414 fps | 94.4% |
| Accurate No. 9* | <<locked>> | 84% | 36,506 psi | 84% | 1401 fps | 88.7% |
| Accurate Solo 1000² | <<locked>> | 76% | 37,289 psi | 86% | 1168 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 36,201 psi | 83% | 1211 fps | 100% |
| Accurate TCM* | <<locked>> | 84% | 36,274 psi | 83% | 1394 fps | 90% |
| ADI AP 100 | <<locked>> | 96% | 36,463 psi | 84% | 1348 fps | 99.6% |
| ADI AP 70N² | <<locked>> | 68% | 37,463 psi | 86% | 1240 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 38,305 psi | 88% | 1076 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 37,144 psi | 85% | 1099 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 38,566 psi | 89% | 1152 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 39,262 psi | 90% | 1204 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 37,550 psi | 86% | 1214 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 38,493 psi | 88% | 1427 fps | 93.9% |
| Alliant BULLSEYE² | <<locked>> | 72% | 38,145 psi | 88% | 1302 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,667 psi | 89% | 1201 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 37,362 psi | 86% | 1299 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 36,535 psi | 84% | 1394 fps | 99.4% |
| Alliant RED DOT | <<locked>> | 80% | 37,144 psi | 85% | 1158 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 39,363 psi | 90% | 1316 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,318 psi | 83% | 1289 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 36,622 psi | 84% | 1165 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 37,202 psi | 86% | 1184 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 36,361 psi | 84% | 1184 fps | 100% |
| Hodgdon Clays | <<locked>> | 84% | 36,477 psi | 84% | 1089 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 34,330 psi | 79% | 1302 fps | 100% |
| Hodgdon Longshot² | <<locked>> | 64% | 38,450 psi | 88% | 1342 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,143 psi | 37% | 869 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 38,508 psi | 89% | 1253 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 36,825 psi | 85% | 1414 fps | 94.4% |
| Lovex D037.2* | <<locked>> | 84% | 37,318 psi | 86% | 1411 fps | 89.1% |
| Lovex S011² | <<locked>> | 64% | 35,476 psi | 82% | 1178 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 36,245 psi | 83% | 1243 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,869 psi | 85% | 1214 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 36,143 psi | 83% | 1211 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 38,261 psi | 88% | 1204 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 36,869 psi | 85% | 1171 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,637 psi | 84% | 1122 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 38,711 psi | 89% | 1316 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,317 psi | 81% | 1184 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,475 psi | 33% | 873 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 35,418 psi | 81% | 1270 fps | 100% |
| ReloadSwiss RS 24 | <<locked>> | 84% | 38,566 psi | 89% | 1421 fps | 96.8% |
| Rottweil P 801² | <<locked>> | 64% | 35,418 psi | 81% | 1158 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 37,550 psi | 86% | 1421 fps | 100% |
| Shooters World Heavy Pistol* | <<locked>> | 84% | 37,318 psi | 86% | 1411 fps | 89.1% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,825 psi | 85% | 1414 fps | 94.4% |
| SNPE Vectan A0 | <<locked>> | 84% | 37,318 psi | 86% | 1253 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,753 psi | 87% | 1211 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,854 psi | 85% | 1220 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 38,189 psi | 88% | 1109 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 36,463 psi | 84% | 1309 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,027 psi | 83% | 1217 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,347 psi | 86% | 1411 fps | 100% |
| Somchem MP200² | <<locked>> | 76% | 38,377 psi | 88% | 1302 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 38,101 psi | 88% | 1276 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 35,186 psi | 81% | 1355 fps | 97.9% |
| Vihtavuori 3N37 | <<locked>> | 80% | 35,636 psi | 82% | 1316 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 96% | 36,608 psi | 84% | 1385 fps | 96.8% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 35,418 psi | 81% | 1421 fps | 99.2% |
| Vihtavuori N320² | <<locked>> | 72% | 35,955 psi | 83% | 1165 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,893 psi | 71% | 1050 fps | 100% |
| Vihtavuori N330² | <<locked>> | 72% | 35,230 psi | 81% | 1214 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 38,058 psi | 87% | 1276 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 38,479 psi | 88% | 1342 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 36,840 psi | 85% | 1211 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 39,117 psi | 90% | 1260 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 23,308 psi | 54% | 1083 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 23,438 psi | 54% | 1204 fps | 87% |
| Accurate No. 9* | <<locked>> | 80% | 31,125 psi | 72% | 1325 fps | 86% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,149 psi | 56% | 1010 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,479 psi | 47% | 1010 fps | 100% |
| Accurate TCM*² | <<locked>> | 76% | 27,601 psi | 63% | 1263 fps | 85.3% |
| ADI AP 100*² | 6.2 gr | 60% | 13,445 psi | 31% | 925 fps | 86.6% |
| ADI AP 70N² | <<locked>> | 60% | 29,936 psi | 69% | 1155 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,905 psi | 62% | 951 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,773 psi | 59% | 968 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,975 psi | 55% | 984 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 25,773 psi | 59% | 1050 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,480 psi | 49% | 1020 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 84% | 25,048 psi | 58% | 1217 fps | 86.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,876 psi | 62% | 1158 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,801 psi | 55% | 1024 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,634 psi | 34% | 938 fps | 99.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 19,928 psi | 46% | 1112 fps | 92.6% |
| Alliant RED DOT² | <<locked>> | 60% | 22,684 psi | 52% | 981 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,734 psi | 71% | 1214 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,885 psi | 48% | 1073 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,872 psi | 53% | 1004 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,156 psi | 33% | 873 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,338 psi | 58% | 1063 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,321 psi | 49% | 906 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,646 psi | 68% | 1240 fps | 99.8% |
| Hodgdon Longshot² | <<locked>> | 60% | 33,286 psi | 77% | 1283 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,759 psi | 16% | 636 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,149 psi | 56% | 1076 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 23,438 psi | 54% | 1204 fps | 87% |
| Lovex D037.2* | <<locked>> | 80% | 32,590 psi | 75% | 1345 fps | 86.8% |
| Lovex S011² | <<locked>> | 60% | 31,473 psi | 72% | 1132 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 24,250 psi | 56% | 1099 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,522 psi | 45% | 988 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,523 psi | 47% | 1014 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,060 psi | 51% | 1010 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,786 psi | 55% | 1017 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,514 psi | 63% | 1020 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 30,052 psi | 69% | 1214 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 27,789 psi | 64% | 1102 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,251 psi | 14% | 636 fps | 99.1% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,290 psi | 44% | 1047 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 20,001 psi | 46% | 1115 fps | 86.7% |
| Rottweil P 801² | <<locked>> | 60% | 31,633 psi | 73% | 1115 fps | 100% |
| Rottweil P 806*² | 8.9 gr | 60% | 13,184 psi | 30% | 994 fps | 91.9% |
| Shooters World Heavy Pistol* | <<locked>> | 80% | 32,590 psi | 75% | 1345 fps | 86.8% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 23,438 psi | 54% | 1204 fps | 87% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,406 psi | 45% | 1007 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,540 psi | 56% | 1053 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,714 psi | 55% | 1060 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,427 psi | 65% | 1001 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 16,099 psi | 37% | 978 fps | 95.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,293 psi | 54% | 1056 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 21,321 psi | 49% | 1158 fps | 95.6% |
| Somchem MP200² | <<locked>> | 60% | 24,178 psi | 56% | 1122 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,524 psi | 49% | 1056 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 25,976 psi | 60% | 1214 fps | 94.3% |
| Vihtavuori 3N37² | <<locked>> | 60% | 18,985 psi | 44% | 1063 fps | 98.2% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 18,014 psi | 41% | 1070 fps | 85.9% |
| Vihtavuori N105*² | 8.4 gr | 72% | 14,504 psi | 33% | 1027 fps | 85.8% |
| Vihtavuori N320² | <<locked>> | 60% | 25,106 psi | 58% | 1043 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,299 psi | 28% | 781 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,178 psi | 56% | 1083 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,972 psi | 48% | 1053 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 16,273 psi | 37% | 1001 fps | 96.9% |
| Winchester 231² | <<locked>> | 60% | 33,011 psi | 76% | 1168 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,131 psi | 46% | 1020 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 67 powders for .357 Mag. loaded with the .358 | 158gr | LEE Mold C358-158-SWC. Alliant BLUE DOT delivers the highest muzzle velocity at 1,427 fps; across all powders the maximum-charge window runs from 869 fps to 1,427 fps. Alliant BLUE DOT gives the best case fill at 100 %, and 34 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 33–90 %, leaving at least 10 % headroom. Alliant BLUE DOT, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Rottweil P 806, Vihtavuori N105, ADI AP 100 rank at the top here: for .357 Mag. with the .358 | 158gr | LEE Mold C358-158-SWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, Accurate No. 9, Accurate TCM burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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.