Load Specifications
Load data in caliber .357 Maximum with .357 | 180gr | Speer TMJ bullet and 66 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: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 84% | 38,986 psi | 87% | 1539 fps | 93% |
| Accurate No. 2² | <<locked>> | 64% | 37,463 psi | 83% | 1309 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 39,015 psi | 87% | 1516 fps | 99.7% |
| Accurate No. 9² | <<locked>> | 72% | 38,841 psi | 86% | 1522 fps | 97.4% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,827 psi | 86% | 1224 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,972 psi | 89% | 1283 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 39,030 psi | 87% | 1519 fps | 98.1% |
| ADI AP 100 | <<locked>> | 84% | 39,682 psi | 88% | 1444 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 37,420 psi | 83% | 1122 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,943 psi | 89% | 1178 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 37,492 psi | 83% | 1181 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,985 psi | 84% | 1227 fps | 100% |
| Alliant 2400 | <<locked>> | 80% | 37,594 psi | 84% | 1529 fps | 95.1% |
| Alliant BE-86² | <<locked>> | 68% | 37,550 psi | 84% | 1247 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 39,218 psi | 87% | 1516 fps | 99.4% |
| Alliant Green Dot² | <<locked>> | 68% | 38,247 psi | 85% | 1234 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,900 psi | 89% | 1358 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 38,711 psi | 86% | 1476 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 40,132 psi | 89% | 1594 fps | 91.1% |
| Alliant RED DOT² | <<locked>> | 72% | 40,147 psi | 89% | 1227 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 37,391 psi | 83% | 1332 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,725 psi | 86% | 1220 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 38,464 psi | 86% | 1230 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 39,276 psi | 87% | 1247 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,914 psi | 89% | 1175 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 35,824 psi | 80% | 1535 fps | 88.3% |
| Hodgdon LilGun | <<locked>> | 92% | 40,219 psi | 89% | 1640 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,974 psi | 51% | 991 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 38,058 psi | 85% | 1276 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 39,015 psi | 87% | 1516 fps | 99.7% |
| Lovex D037.2² | <<locked>> | 72% | 40,045 psi | 89% | 1535 fps | 97.6% |
| Lovex S020² | <<locked>> | 64% | 39,291 psi | 87% | 1309 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 37,086 psi | 82% | 1250 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 38,174 psi | 85% | 1253 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 37,304 psi | 83% | 1230 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,841 psi | 86% | 1230 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,637 psi | 84% | 1171 fps | 100% |
| Ramshot Enforcer | <<locked>> | 80% | 37,521 psi | 83% | 1535 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,553 psi | 48% | 1004 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 36,883 psi | 82% | 1309 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 68% | 36,216 psi | 81% | 1460 fps | 99.9% |
| ReloadSwiss RS 30*ᴾ | <<locked>> | 100% | 31,662 psi | 70% | 1483 fps | 89.4% |
| Rottweil P 806² | <<locked>> | 72% | 38,696 psi | 86% | 1460 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 40,045 psi | 89% | 1535 fps | 97.6% |
| Shooters World Major Pistol² | <<locked>> | 64% | 39,015 psi | 87% | 1516 fps | 99.7% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,884 psi | 84% | 1299 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 40,364 psi | 90% | 1276 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,900 psi | 89% | 1293 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,683 psi | 90% | 1188 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 30,023 psi | 67% | 1414 fps | 95.1% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 38,363 psi | 85% | 1375 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 39,363 psi | 88% | 1286 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 39,798 psi | 89% | 1480 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 38,377 psi | 85% | 1339 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 37,855 psi | 84% | 1309 fps | 100% |
| Somchem S265* | <<locked>> | 96% | 36,912 psi | 82% | 1480 fps | 87.5% |
| Vihtavuori 3N37² | <<locked>> | 68% | 36,999 psi | 82% | 1371 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 37,623 psi | 84% | 1463 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 38,870 psi | 86% | 1503 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 38,493 psi | 86% | 1562 fps | 96% |
| Vihtavuori N320² | <<locked>> | 64% | 38,769 psi | 86% | 1227 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 40,596 psi | 90% | 1175 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 39,030 psi | 87% | 1283 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 38,276 psi | 85% | 1312 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 40,611 psi | 90% | 1404 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 39,740 psi | 88% | 1299 fps | 100% |
Start Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100*² | <<locked>> | 72% | 25,759 psi | 57% | 1329 fps | 86% |
| Accurate No. 2² | <<locked>> | 60% | 32,808 psi | 73% | 1253 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 33,243 psi | 74% | 1434 fps | 98.9% |
| Accurate No. 9*² | <<locked>> | 60% | 25,382 psi | 56% | 1306 fps | 91.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,604 psi | 70% | 1142 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 29,312 psi | 65% | 1161 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 25,411 psi | 57% | 1299 fps | 92.9% |
| ADI AP 100² | <<locked>> | 60% | 20,552 psi | 46% | 1148 fps | 99.2% |
| ADI APS 350² | <<locked>> | 60% | 31,502 psi | 70% | 1053 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,850 psi | 69% | 1073 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,980 psi | 69% | 1102 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 34,345 psi | 76% | 1184 fps | 100% |
| Alliant 2400*² | <<locked>> | 64% | 22,655 psi | 50% | 1263 fps | 86.7% |
| Alliant BE-86² | <<locked>> | 60% | 30,052 psi | 67% | 1161 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 19,522 psi | 43% | 1165 fps | 91.3% |
| Alliant Green Dot² | <<locked>> | 60% | 31,154 psi | 69% | 1148 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 22,220 psi | 49% | 1115 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 30,095 psi | 67% | 1355 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 80% | 30,182 psi | 67% | 1444 fps | 86.2% |
| Alliant RED DOT² | <<locked>> | 60% | 30,472 psi | 68% | 1112 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 30,124 psi | 67% | 1240 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 31,502 psi | 70% | 1142 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 21,002 psi | 47% | 1007 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,635 psi | 77% | 1198 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,947 psi | 58% | 1004 fps | 100% |
| Hodgdon H110* | <<locked>> | 80% | 31,328 psi | 70% | 1463 fps | 85.9% |
| Hodgdon LilGun*² | <<locked>> | 76% | 22,437 psi | 50% | 1339 fps | 87.3% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,776 psi | 24% | 751 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 34,548 psi | 77% | 1237 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 33,243 psi | 74% | 1434 fps | 98.9% |
| Lovex D037.2*² | <<locked>> | 60% | 25,788 psi | 57% | 1312 fps | 91.9% |
| Lovex S020² | <<locked>> | 60% | 34,780 psi | 77% | 1260 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 27,383 psi | 61% | 1132 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 30,574 psi | 68% | 1165 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 30,400 psi | 68% | 1148 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,618 psi | 70% | 1145 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,621 psi | 77% | 1138 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 21,509 psi | 48% | 1253 fps | 87.1% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 10,298 psi | 23% | 764 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,993 psi | 64% | 1214 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 28,094 psi | 62% | 1335 fps | 98.7% |
| ReloadSwiss RS 30* | <<locked>> | 96% | 28,152 psi | 63% | 1414 fps | 86.8% |
| Rottweil P 806² | <<locked>> | 60% | 25,672 psi | 57% | 1283 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 25,788 psi | 57% | 1312 fps | 91.9% |
| Shooters World Major Pistol² | <<locked>> | 60% | 33,243 psi | 74% | 1434 fps | 98.9% |
| SNPE Vectan A0² | <<locked>> | 60% | 27,282 psi | 61% | 1165 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,605 psi | 73% | 1191 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 32,024 psi | 71% | 1204 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 34,214 psi | 76% | 1115 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 19,247 psi | 43% | 1194 fps | 87.4% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 24,163 psi | 54% | 1181 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,894 psi | 71% | 1201 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 35,186 psi | 78% | 1421 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 34,360 psi | 76% | 1293 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 30,603 psi | 68% | 1220 fps | 100% |
| Somchem S265* | <<locked>> | 92% | 32,938 psi | 73% | 1421 fps | 85.5% |
| Vihtavuori 3N37² | <<locked>> | 60% | 29,153 psi | 65% | 1270 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 20,160 psi | 45% | 1171 fps | 95.8% |
| Vihtavuori N105² | <<locked>> | 60% | 17,767 psi | 40% | 1158 fps | 97.5% |
| Vihtavuori N110* | <<locked>> | 80% | 20,436 psi | 45% | 1247 fps | 85.5% |
| Vihtavuori N320² | <<locked>> | 60% | 34,911 psi | 78% | 1184 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 17,825 psi | 40% | 886 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 35,273 psi | 78% | 1240 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 30,763 psi | 68% | 1224 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 25,208 psi | 56% | 1204 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 28,921 psi | 64% | 1171 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 66 powders for .357 Maximum loaded with the .357 | 180gr | Speer TMJ. Hodgdon LilGun delivers the highest muzzle velocity at 1,640 fps; across all powders the maximum-charge window runs from 991 fps to 1,640 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 20 of the 66 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, ReloadSwiss RS 30 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, Accurate 4100, Alliant Power Pro 300-MP, Hodgdon H110 burn incompletely and react more sensitively to barrel length and temperature. ADI APS 350, ADI APS 450, ADI AS 30 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.