Load Specifications
Load data in caliber .357 Maximum with .357 | 158gr | Geco HOLLOW POINT bullet and 66 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% | 37,782 psi | 84% | 1640 fps | 90.9% |
| Accurate No. 2² | <<locked>> | 64% | 36,796 psi | 82% | 1421 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 37,492 psi | 83% | 1621 fps | 99% |
| Accurate No. 9² | <<locked>> | 72% | 38,276 psi | 85% | 1637 fps | 96.1% |
| Accurate Solo 1000² | <<locked>> | 68% | 38,276 psi | 85% | 1332 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,233 psi | 87% | 1398 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 38,130 psi | 85% | 1627 fps | 96.9% |
| ADI AP 100 | <<locked>> | 84% | 38,319 psi | 85% | 1555 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,669 psi | 90% | 1263 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,624 psi | 88% | 1283 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,147 psi | 89% | 1322 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 37,463 psi | 83% | 1335 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 36,434 psi | 81% | 1631 fps | 93.1% |
| Alliant BE-86² | <<locked>> | 68% | 36,463 psi | 81% | 1352 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 38,421 psi | 85% | 1627 fps | 98.6% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,582 psi | 90% | 1493 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 37,623 psi | 84% | 1339 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,305 psi | 87% | 1473 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,797 psi | 84% | 1594 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 38,522 psi | 86% | 1693 fps | 88.7% |
| Alliant RED DOT² | <<locked>> | 72% | 39,117 psi | 87% | 1332 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 40,466 psi | 90% | 1493 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,435 psi | 85% | 1332 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 37,710 psi | 84% | 1335 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,450 psi | 86% | 1352 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,465 psi | 88% | 1280 fps | 100% |
| Hodgdon H110* | <<locked>> | 88% | 39,929 psi | 89% | 1716 fps | 88.4% |
| Hodgdon LilGun | <<locked>> | 92% | 38,856 psi | 86% | 1749 fps | 95.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,452 psi | 50% | 1076 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 37,623 psi | 84% | 1391 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 37,492 psi | 83% | 1621 fps | 99% |
| Lovex D037.2² | <<locked>> | 72% | 38,769 psi | 86% | 1644 fps | 96.2% |
| Lovex S020² | <<locked>> | 64% | 39,044 psi | 87% | 1427 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 40,451 psi | 90% | 1404 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 36,956 psi | 82% | 1355 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,900 psi | 89% | 1378 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,189 psi | 85% | 1335 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,536 psi | 83% | 1283 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 36,274 psi | 81% | 1637 fps | 94.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,393 psi | 48% | 1096 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,682 psi | 88% | 1463 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 40,219 psi | 89% | 1640 fps | 99.9% |
| Rottweil P 806² | <<locked>> | 72% | 37,434 psi | 83% | 1572 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 38,769 psi | 86% | 1644 fps | 96.2% |
| Shooters World Major Pistol² | <<locked>> | 64% | 37,492 psi | 83% | 1621 fps | 99% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,434 psi | 83% | 1414 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,914 psi | 89% | 1391 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,392 psi | 88% | 1404 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,292 psi | 90% | 1293 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 28,979 psi | 64% | 1503 fps | 93% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 37,362 psi | 83% | 1486 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,580 psi | 86% | 1398 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 39,117 psi | 87% | 1601 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 37,811 psi | 84% | 1457 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 37,014 psi | 82% | 1417 fps | 100% |
| Somchem S265*ᴾ | <<locked>> | 100% | 40,219 psi | 89% | 1640 fps | 87.2% |
| Vihtavuori 3N37² | <<locked>> | 72% | 40,538 psi | 90% | 1535 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 36,143 psi | 80% | 1568 fps | 99.8% |
| Vihtavuori N105 | <<locked>> | 84% | 38,130 psi | 85% | 1624 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 36,651 psi | 82% | 1657 fps | 93.9% |
| Vihtavuori N320² | <<locked>> | 64% | 38,072 psi | 85% | 1335 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,697 psi | 88% | 1276 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,261 psi | 85% | 1391 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 37,840 psi | 84% | 1430 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,624 psi | 88% | 1519 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,812 psi | 86% | 1411 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% | 28,485 psi | 63% | 1483 fps | 85.9% |
| Accurate No. 2² | <<locked>> | 60% | 32,547 psi | 72% | 1368 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 32,329 psi | 72% | 1539 fps | 97.8% |
| Accurate No. 9*² | <<locked>> | 60% | 24,685 psi | 55% | 1394 fps | 89.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,053 psi | 69% | 1240 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,326 psi | 63% | 1257 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,918 psi | 55% | 1391 fps | 90.8% |
| ADI AP 100² | <<locked>> | 60% | 19,769 psi | 44% | 1227 fps | 98.2% |
| ADI APS 350² | <<locked>> | 60% | 30,980 psi | 69% | 1145 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,603 psi | 68% | 1171 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,705 psi | 68% | 1204 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 33,475 psi | 74% | 1283 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 25,048 psi | 56% | 1417 fps | 86.6% |
| Alliant BE-86² | <<locked>> | 60% | 29,138 psi | 65% | 1257 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,942 psi | 42% | 1243 fps | 88.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 36,448 psi | 81% | 1440 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 31,169 psi | 69% | 1257 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,306 psi | 47% | 1201 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,443 psi | 65% | 1460 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 33,591 psi | 75% | 1611 fps | 86.2% |
| Alliant RED DOT² | <<locked>> | 60% | 29,631 psi | 66% | 1207 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 29,385 psi | 65% | 1342 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,574 psi | 68% | 1237 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.3 gr | 60% | 20,769 psi | 46% | 1099 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,258 psi | 76% | 1302 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,440 psi | 57% | 1093 fps | 100% |
| Hodgdon H110* | <<locked>> | 84% | 34,766 psi | 77% | 1634 fps | 85.9% |
| Hodgdon LilGun* | <<locked>> | 80% | 24,801 psi | 55% | 1493 fps | 87.2% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,617 psi | 24% | 820 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,765 psi | 75% | 1342 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 32,329 psi | 72% | 1539 fps | 97.8% |
| Lovex D037.2*² | <<locked>> | 60% | 25,077 psi | 56% | 1401 fps | 89.6% |
| Lovex S020² | <<locked>> | 60% | 34,229 psi | 76% | 1368 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 27,035 psi | 60% | 1230 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 30,081 psi | 67% | 1266 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,617 psi | 66% | 1247 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,575 psi | 70% | 1253 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 34,098 psi | 76% | 1240 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,757 psi | 53% | 1404 fps | 87% |
| ReloadSwiss RS 14² | 4.8 gr | 60% | 9,834 psi | 22% | 820 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 28,631 psi | 64% | 1322 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,876 psi | 60% | 1424 fps | 97.3% |
| Rottweil P 806² | <<locked>> | 60% | 24,787 psi | 55% | 1378 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 25,077 psi | 56% | 1401 fps | 89.6% |
| Shooters World Major Pistol² | <<locked>> | 60% | 32,329 psi | 72% | 1539 fps | 97.8% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,687 psi | 59% | 1263 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,198 psi | 72% | 1296 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,604 psi | 70% | 1309 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,707 psi | 75% | 1211 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,987 psi | 47% | 1332 fps | 87% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,554 psi | 52% | 1273 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,169 psi | 69% | 1302 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 34,330 psi | 76% | 1532 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 33,562 psi | 75% | 1401 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,820 psi | 66% | 1322 fps | 100% |
| Somchem S265* | <<locked>> | 96% | 35,795 psi | 80% | 1575 fps | 85.1% |
| Vihtavuori 3N37² | <<locked>> | 60% | 28,094 psi | 62% | 1365 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,653 psi | 44% | 1253 fps | 94% |
| Vihtavuori N105² | <<locked>> | 60% | 16,824 psi | 37% | 1227 fps | 95.5% |
| Vihtavuori N110* | <<locked>> | 84% | 22,423 psi | 50% | 1388 fps | 85.2% |
| Vihtavuori N320² | <<locked>> | 60% | 33,852 psi | 75% | 1283 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.4 gr | 60% | 17,463 psi | 39% | 965 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,214 psi | 76% | 1342 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,791 psi | 66% | 1325 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 24,555 psi | 55% | 1302 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,963 psi | 62% | 1266 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 66 powders for .357 Maximum loaded with the .357 | 158gr | Geco HOLLOW POINT. Hodgdon LilGun delivers the highest muzzle velocity at 1,749 fps; across all powders the maximum-charge window runs from 1,076 fps to 1,749 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 19 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, 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 .357 | 158gr | Geco HOLLOW POINT 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. 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.