Load Specifications
Load data in caliber .357 Mag. with .357 | 158gr | Geco HOLLOW POINT bullet and 67 powders. The key underlying parameters are shown in the table above.
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% | 35,288 psi | 81% | 1230 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 38,537 psi | 89% | 1427 fps | 94.8% |
| Accurate No. 9* | <<locked>> | 84% | 37,362 psi | 86% | 1401 fps | 88.9% |
| Accurate Solo 1000² | <<locked>> | 76% | 37,666 psi | 87% | 1161 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 36,941 psi | 85% | 1211 fps | 100% |
| Accurate TCM* | <<locked>> | 84% | 37,927 psi | 87% | 1404 fps | 90.5% |
| ADI AP 100 | <<locked>> | 96% | 37,521 psi | 86% | 1355 fps | 99.7% |
| ADI AP 70N² | <<locked>> | 68% | 38,769 psi | 89% | 1243 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 38,348 psi | 88% | 1073 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 37,289 psi | 86% | 1093 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 37,130 psi | 85% | 1129 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 36,985 psi | 85% | 1171 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 38,595 psi | 89% | 1214 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 35,998 psi | 83% | 1381 fps | 92.8% |
| Alliant BULLSEYE² | <<locked>> | 72% | 38,682 psi | 89% | 1299 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 36,506 psi | 84% | 1168 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 38,798 psi | 89% | 1302 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 37,637 psi | 87% | 1401 fps | 99.5% |
| Alliant RED DOT | <<locked>> | 80% | 38,986 psi | 90% | 1165 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 35,940 psi | 83% | 1273 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 37,521 psi | 86% | 1293 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 37,333 psi | 86% | 1161 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 38,261 psi | 88% | 1184 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 37,507 psi | 86% | 1188 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 76% | 37,942 psi | 87% | 1234 fps | 100% |
| Hodgdon Clays | <<locked>> | 84% | 36,680 psi | 84% | 1086 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 35,404 psi | 81% | 1306 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,796 psi | 41% | 883 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 35,795 psi | 82% | 1211 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 38,537 psi | 89% | 1427 fps | 94.8% |
| Lovex D037.2* | <<locked>> | 84% | 38,159 psi | 88% | 1411 fps | 89.2% |
| Lovex S011² | <<locked>> | 64% | 35,882 psi | 82% | 1171 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 37,289 psi | 86% | 1243 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 37,652 psi | 87% | 1214 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 38,508 psi | 89% | 1220 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 38,899 psi | 89% | 1204 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 37,420 psi | 86% | 1168 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 38,116 psi | 88% | 1129 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 35,143 psi | 81% | 1266 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 36,709 psi | 84% | 1188 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 16,418 psi | 38% | 889 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 36,361 psi | 84% | 1270 fps | 100% |
| ReloadSwiss RS 24 | <<locked>> | 80% | 35,723 psi | 82% | 1375 fps | 95.8% |
| Rottweil P 801² | <<locked>> | 64% | 36,738 psi | 84% | 1158 fps | 100% |
| Rottweil P 806 | <<locked>> | 84% | 35,201 psi | 81% | 1385 fps | 100% |
| Shooters World Heavy Pistol* | <<locked>> | 84% | 38,159 psi | 88% | 1411 fps | 89.2% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 38,537 psi | 89% | 1427 fps | 94.8% |
| SNPE Vectan A0 | <<locked>> | 84% | 38,029 psi | 87% | 1253 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 39,349 psi | 90% | 1217 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 38,435 psi | 88% | 1227 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 38,319 psi | 88% | 1102 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 37,521 psi | 86% | 1309 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,869 psi | 85% | 1217 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 39,015 psi | 90% | 1421 fps | 100% |
| Somchem MP200² | <<locked>> | 72% | 35,694 psi | 82% | 1263 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 39,044 psi | 90% | 1276 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 36,085 psi | 83% | 1355 fps | 98% |
| Vihtavuori 3N37 | <<locked>> | 80% | 36,840 psi | 85% | 1319 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 96% | 38,145 psi | 88% | 1394 fps | 97.1% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 37,086 psi | 85% | 1430 fps | 99.4% |
| Vihtavuori N320² | <<locked>> | 72% | 36,738 psi | 84% | 1165 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 31,981 psi | 74% | 1047 fps | 100% |
| Vihtavuori N330² | <<locked>> | 72% | 36,187 psi | 83% | 1214 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 39,001 psi | 90% | 1276 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 35,781 psi | 82% | 1302 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 37,579 psi | 86% | 1207 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 36,666 psi | 84% | 1227 fps | 100% |
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 24,743 psi | 57% | 1096 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 24,976 psi | 57% | 1220 fps | 88% |
| Accurate No. 9* | <<locked>> | 80% | 32,750 psi | 75% | 1339 fps | 86.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 25,367 psi | 58% | 1017 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 21,930 psi | 50% | 1020 fps | 100% |
| Accurate TCM*² | <<locked>> | 76% | 29,095 psi | 67% | 1276 fps | 86% |
| ADI AP 100*² | <<locked>> | 60% | 14,373 psi | 33% | 938 fps | 87.8% |
| ADI AP 70N² | <<locked>> | 60% | 31,169 psi | 72% | 1158 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 27,006 psi | 62% | 945 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,918 psi | 60% | 961 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 25,541 psi | 59% | 994 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,629 psi | 61% | 1047 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 22,423 psi | 52% | 1024 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 80% | 23,598 psi | 54% | 1178 fps | 85.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 28,282 psi | 65% | 1168 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 24,656 psi | 57% | 1024 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,838 psi | 36% | 951 fps | 99.7% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,929 psi | 48% | 1122 fps | 93.3% |
| Alliant RED DOT² | <<locked>> | 60% | 24,279 psi | 56% | 991 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 31,343 psi | 72% | 1214 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 22,031 psi | 51% | 1076 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 24,366 psi | 56% | 1014 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 15,708 psi | 36% | 889 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 26,426 psi | 61% | 1066 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 24,004 psi | 55% | 1063 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,582 psi | 50% | 899 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 30,690 psi | 71% | 1243 fps | 99.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,195 psi | 19% | 659 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 26,121 psi | 60% | 1093 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 24,976 psi | 57% | 1220 fps | 88% |
| Lovex D037.2* | <<locked>> | 80% | 33,489 psi | 77% | 1348 fps | 87% |
| Lovex S011² | <<locked>> | 60% | 31,908 psi | 73% | 1129 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 25,266 psi | 58% | 1102 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 20,320 psi | 47% | 991 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 22,524 psi | 52% | 1030 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 23,511 psi | 54% | 1017 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 25,208 psi | 58% | 1024 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,963 psi | 64% | 1017 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 30,937 psi | 71% | 1214 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 29,182 psi | 67% | 1102 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,513 psi | 17% | 653 fps | 99.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 20,233 psi | 47% | 1050 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 18,637 psi | 43% | 1070 fps | 85.1% |
| Rottweil P 801² | <<locked>> | 60% | 32,909 psi | 76% | 1115 fps | 100% |
| Rottweil P 806*² | <<locked>> | 60% | 15,113 psi | 35% | 1033 fps | 94.1% |
| Shooters World Heavy Pistol* | <<locked>> | 80% | 33,489 psi | 77% | 1348 fps | 87% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 24,976 psi | 57% | 1220 fps | 88% |
| SNPE Vectan A0² | <<locked>> | 60% | 20,740 psi | 48% | 1020 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 25,164 psi | 58% | 1053 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 24,337 psi | 56% | 1060 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,572 psi | 66% | 997 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 17,564 psi | 40% | 997 fps | 96.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 24,120 psi | 55% | 1060 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 22,814 psi | 52% | 1175 fps | 96.4% |
| Somchem MP200² | <<locked>> | 60% | 25,193 psi | 58% | 1125 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 23,119 psi | 53% | 1070 fps | 100% |
| Somchem S221² | <<locked>> | 60% | 27,543 psi | 63% | 1227 fps | 95% |
| Vihtavuori 3N37² | <<locked>> | 60% | 20,088 psi | 46% | 1070 fps | 98.6% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 19,319 psi | 44% | 1086 fps | 87% |
| Vihtavuori N105*² | <<locked>> | 72% | 15,838 psi | 36% | 1053 fps | 87.6% |
| Vihtavuori N320² | <<locked>> | 60% | 26,818 psi | 62% | 1053 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 13,445 psi | 31% | 784 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 25,962 psi | 60% | 1096 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 22,611 psi | 52% | 1070 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 17,274 psi | 40% | 1010 fps | 97.4% |
| Winchester 231² | <<locked>> | 60% | 33,750 psi | 78% | 1168 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 21,205 psi | 49% | 1024 fps | 100% |
* 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 15 powders for .357 Mag. loaded with the .357 | 158gr | Geco HOLLOW POINT. Vihtavuori N105 delivers the highest muzzle velocity at 1,430 fps; across all powders the maximum-charge window runs from 883 fps to 1,430 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 15 of the 15 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 38–89 %, leaving at least 11 % 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. As outliers, Alliant BLUE DOT burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, Hodgdon Clays, Hodgdon TrailBoss 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.