Load Specifications
Load data in caliber .357 Mag. with .358 | 148gr | LEE Mold TL358-148-WC bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, ADI AP 100 and SNPE Vectan BA7 1/2.
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>> | 72% | 35,621 psi | 82% | 1316 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 38,711 psi | 89% | 1516 fps | 94.9% |
| Accurate No. 9* | <<locked>> | 84% | 38,174 psi | 88% | 1496 fps | 89.3% |
| Accurate Solo 1000² | <<locked>> | 76% | 37,942 psi | 87% | 1243 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 37,159 psi | 85% | 1293 fps | 100% |
| Accurate TCM* | <<locked>> | 84% | 38,218 psi | 88% | 1493 fps | 90.7% |
| ADI AP 100 | <<locked>> | 96% | 37,579 psi | 86% | 1440 fps | 99.7% |
| ADI AP 70N² | <<locked>> | 68% | 38,348 psi | 88% | 1322 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 38,667 psi | 89% | 1148 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 38,000 psi | 87% | 1175 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 36,492 psi | 84% | 1201 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 36,796 psi | 85% | 1250 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 39,233 psi | 90% | 1302 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 36,521 psi | 84% | 1473 fps | 93% |
| Alliant BULLSEYE² | <<locked>> | 72% | 39,102 psi | 90% | 1385 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 36,260 psi | 83% | 1247 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 38,363 psi | 88% | 1381 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 38,159 psi | 88% | 1493 fps | 99.5% |
| Alliant RED DOT | <<locked>> | 80% | 38,247 psi | 88% | 1240 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 35,404 psi | 81% | 1348 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,796 psi | 85% | 1368 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 36,854 psi | 85% | 1237 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 37,782 psi | 87% | 1257 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 37,753 psi | 87% | 1266 fps | 100% |
| Hodgdon Clays² | <<locked>> | 72% | 36,376 psi | 84% | 1135 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 35,752 psi | 82% | 1391 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,795 psi | 39% | 932 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 39,276 psi | 90% | 1332 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 38,711 psi | 89% | 1516 fps | 94.9% |
| Lovex D037.2* | <<locked>> | 84% | 38,957 psi | 90% | 1509 fps | 89.7% |
| Lovex S011² | <<locked>> | 64% | 35,955 psi | 83% | 1253 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 36,869 psi | 85% | 1325 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 37,521 psi | 86% | 1293 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 38,029 psi | 87% | 1299 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 38,406 psi | 88% | 1280 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 37,449 psi | 86% | 1247 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 37,768 psi | 87% | 1201 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 96% | 38,493 psi | 88% | 1535 fps | 87.8% |
| Ramshot Silhouette² | <<locked>> | 64% | 34,925 psi | 80% | 1345 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,694 psi | 82% | 1260 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,055 psi | 35% | 932 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 36,550 psi | 84% | 1355 fps | 100% |
| ReloadSwiss RS 24 | <<locked>> | 80% | 35,679 psi | 82% | 1460 fps | 95.8% |
| Rottweil P 801² | <<locked>> | 64% | 35,810 psi | 82% | 1227 fps | 100% |
| Rottweil P 806 | <<locked>> | 84% | 34,447 psi | 79% | 1457 fps | 100% |
| Shooters World Heavy Pistol* | <<locked>> | 84% | 38,957 psi | 90% | 1509 fps | 89.7% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 38,711 psi | 89% | 1516 fps | 94.9% |
| SNPE Vectan A0 | <<locked>> | 84% | 38,276 psi | 88% | 1339 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 38,812 psi | 89% | 1293 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 37,927 psi | 87% | 1302 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 38,928 psi | 89% | 1184 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 37,753 psi | 87% | 1398 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,724 psi | 84% | 1296 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 38,783 psi | 89% | 1503 fps | 100% |
| Somchem MP200² | <<locked>> | 72% | 35,708 psi | 82% | 1348 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 39,291 psi | 90% | 1362 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 36,506 psi | 84% | 1447 fps | 98.1% |
| Vihtavuori 3N37 | <<locked>> | 80% | 36,521 psi | 84% | 1404 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 92% | 36,608 psi | 84% | 1460 fps | 96.7% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 38,203 psi | 88% | 1529 fps | 99.5% |
| Vihtavuori N320² | <<locked>> | 72% | 36,187 psi | 83% | 1237 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 37,536 psi | 86% | 1178 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 38,682 psi | 89% | 1322 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 38,943 psi | 90% | 1362 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 37,405 psi | 86% | 1407 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 37,594 psi | 86% | 1289 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 36,143 psi | 83% | 1299 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% | 24,221 psi | 56% | 1161 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 24,207 psi | 56% | 1280 fps | 87.3% |
| Accurate No. 9* | <<locked>> | 80% | 33,098 psi | 76% | 1424 fps | 86.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 25,019 psi | 57% | 1083 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 21,074 psi | 48% | 1076 fps | 100% |
| Accurate TCM*² | <<locked>> | 76% | 28,703 psi | 66% | 1348 fps | 85.8% |
| ADI AP 100*² | 6.9 gr | 60% | 13,895 psi | 32% | 988 fps | 86.9% |
| ADI AP 70N² | <<locked>> | 60% | 30,589 psi | 70% | 1230 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 27,427 psi | 63% | 1017 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,947 psi | 60% | 1030 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,323 psi | 56% | 1047 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,469 psi | 61% | 1122 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 22,075 psi | 51% | 1089 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 80% | 23,163 psi | 53% | 1243 fps | 85.1% |
| Alliant BULLSEYE² | <<locked>> | 60% | 27,862 psi | 64% | 1240 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,873 psi | 55% | 1083 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,953 psi | 34% | 997 fps | 99.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,624 psi | 47% | 1188 fps | 92.9% |
| Alliant RED DOT² | <<locked>> | 60% | 24,004 psi | 55% | 1060 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 31,995 psi | 74% | 1302 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 21,205 psi | 49% | 1138 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,482 psi | 54% | 1070 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,649 psi | 34% | 932 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,570 psi | 59% | 1125 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 27,891 psi | 64% | 1033 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 30,676 psi | 71% | 1322 fps | 99.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,179 psi | 17% | 689 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 25,237 psi | 58% | 1155 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 24,207 psi | 56% | 1280 fps | 87.3% |
| Lovex D037.2* | <<locked>> | 80% | 33,794 psi | 78% | 1437 fps | 87.3% |
| Lovex S011² | <<locked>> | 60% | 31,415 psi | 72% | 1198 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 25,019 psi | 57% | 1171 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 20,102 psi | 46% | 1056 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,828 psi | 50% | 1093 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,800 psi | 52% | 1079 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,627 psi | 57% | 1089 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,630 psi | 64% | 1083 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 92% | 33,228 psi | 76% | 1460 fps | 85.1% |
| Ramshot Silhouette² | <<locked>> | 60% | 30,371 psi | 70% | 1286 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,819 psi | 66% | 1178 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,309 psi | 14% | 669 fps | 99% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 20,146 psi | 46% | 1119 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 20,972 psi | 48% | 1194 fps | 87.2% |
| Rottweil P 801² | <<locked>> | 60% | 32,343 psi | 74% | 1191 fps | 100% |
| Rottweil P 806*² | <<locked>> | 60% | 13,938 psi | 32% | 1063 fps | 92.2% |
| Shooters World Heavy Pistol* | <<locked>> | 80% | 33,794 psi | 78% | 1437 fps | 87.3% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 24,207 psi | 56% | 1280 fps | 87.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 20,276 psi | 47% | 1083 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 25,150 psi | 58% | 1125 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 24,352 psi | 56% | 1129 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 29,167 psi | 67% | 1073 fps | 100% |
| SNPE Vectan BA7 1/2² | 7.3 gr | 60% | 16,940 psi | 39% | 1050 fps | 95.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,554 psi | 54% | 1122 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 22,336 psi | 51% | 1240 fps | 95.9% |
| Somchem MP200² | <<locked>> | 60% | 24,613 psi | 57% | 1191 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 22,437 psi | 52% | 1132 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 27,224 psi | 63% | 1302 fps | 94.8% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,682 psi | 45% | 1135 fps | 98.3% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 19,827 psi | 46% | 1168 fps | 87.3% |
| Vihtavuori N105*² | 9.3 gr | 72% | 15,026 psi | 35% | 1096 fps | 86% |
| Vihtavuori N320² | <<locked>> | 60% | 25,367 psi | 58% | 1109 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 14,823 psi | 34% | 876 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,047 psi | 55% | 1142 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 21,567 psi | 50% | 1125 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 17,651 psi | 41% | 1086 fps | 97.5% |
| Winchester 231² | <<locked>> | 60% | 33,257 psi | 76% | 1240 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,668 psi | 48% | 1086 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 | 148gr | LEE Mold TL358-148-WC. Ramshot Enforcer delivers the highest muzzle velocity at 1,535 fps; across all powders the maximum-charge window runs from 932 fps to 1,535 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 32 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 35–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N105 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 N105, ADI AP 100, SNPE Vectan BA7 1/2 rank at the top here: for .357 Mag. with the .358 | 148gr | LEE Mold TL358-148-WC 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 Solo 1000, Accurate Solo 1250, ADI AP 100 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.