Load Specifications
Load data in caliber .357 Maximum with .356 | 145gr | H&N HP HS bullet and 63 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% | 36,564 psi | 81% | 1696 fps | 89% |
| Accurate No. 2² | <<locked>> | 68% | 40,451 psi | 90% | 1545 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,245 psi | 81% | 1680 fps | 98.2% |
| Accurate No. 9*² | <<locked>> | 72% | 36,593 psi | 81% | 1686 fps | 94.5% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,405 psi | 83% | 1398 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,566 psi | 86% | 1467 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 36,608 psi | 81% | 1680 fps | 95.5% |
| ADI AP 100 | <<locked>> | 84% | 37,202 psi | 83% | 1621 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,219 psi | 89% | 1329 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,595 psi | 88% | 1355 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,059 psi | 89% | 1398 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 40,582 psi | 90% | 1450 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 39,900 psi | 89% | 1765 fps | 93.4% |
| Alliant BE-86² | <<locked>> | 72% | 39,798 psi | 89% | 1467 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,217 psi | 83% | 1693 fps | 97.8% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,885 psi | 89% | 1568 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 37,405 psi | 83% | 1414 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,595 psi | 86% | 1549 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,840 psi | 82% | 1663 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 38,406 psi | 85% | 1398 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,450 psi | 88% | 1565 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,289 psi | 83% | 1394 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,335 psi | 90% | 1437 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,739 psi | 84% | 1417 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 38,754 psi | 86% | 1342 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 36,753 psi | 82% | 1795 fps | 93.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,002 psi | 49% | 1129 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 36,448 psi | 81% | 1457 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,245 psi | 81% | 1680 fps | 98.2% |
| Lovex D037.2*² | <<locked>> | 72% | 37,608 psi | 84% | 1706 fps | 94.9% |
| Lovex S020² | <<locked>> | 64% | 38,159 psi | 85% | 1499 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,624 psi | 88% | 1473 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 40,277 psi | 90% | 1476 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,407 psi | 88% | 1450 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,927 psi | 84% | 1411 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 40,350 psi | 90% | 1391 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 39,929 psi | 89% | 1772 fps | 94.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,885 psi | 46% | 1148 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,189 psi | 87% | 1542 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,189 psi | 87% | 1713 fps | 99.6% |
| Rottweil P 806² | <<locked>> | 72% | 36,492 psi | 81% | 1640 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 37,608 psi | 84% | 1706 fps | 94.9% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,245 psi | 81% | 1680 fps | 98.2% |
| SNPE Vectan A0² | <<locked>> | 76% | 40,190 psi | 89% | 1529 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,073 psi | 87% | 1457 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,479 psi | 86% | 1473 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,263 psi | 90% | 1365 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 27,847 psi | 62% | 1552 fps | 91.1% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 40,350 psi | 90% | 1604 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 37,884 psi | 84% | 1470 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 37,927 psi | 84% | 1673 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,825 psi | 82% | 1522 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,596 psi | 90% | 1545 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,494 psi | 88% | 1608 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,610 psi | 88% | 1699 fps | 99.9% |
| Vihtavuori N105 | <<locked>> | 84% | 36,172 psi | 80% | 1683 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,375 psi | 79% | 1713 fps | 92.2% |
| Vihtavuori N320² | <<locked>> | 64% | 37,043 psi | 82% | 1398 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,059 psi | 87% | 1342 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 37,536 psi | 83% | 1463 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 36,927 psi | 82% | 1499 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,624 psi | 86% | 1591 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,261 psi | 85% | 1480 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* | <<locked>> | 80% | 31,937 psi | 71% | 1617 fps | 86.6% |
| Accurate No. 2² | <<locked>> | 60% | 31,430 psi | 70% | 1427 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,386 psi | 70% | 1598 fps | 96.7% |
| Accurate No. 9*² | <<locked>> | 60% | 23,598 psi | 52% | 1434 fps | 87.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,501 psi | 68% | 1302 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,152 psi | 63% | 1325 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 23,888 psi | 53% | 1437 fps | 88.8% |
| ADI AP 100² | <<locked>> | 60% | 19,319 psi | 43% | 1280 fps | 97.2% |
| ADI APS 350² | <<locked>> | 60% | 30,908 psi | 69% | 1207 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,762 psi | 66% | 1224 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,371 psi | 68% | 1270 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,779 psi | 73% | 1348 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 27,557 psi | 61% | 1542 fps | 87% |
| Alliant BE-86² | <<locked>> | 60% | 28,660 psi | 64% | 1319 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,246 psi | 41% | 1283 fps | 86.7% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,317 psi | 79% | 1506 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,603 psi | 68% | 1319 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 21,045 psi | 47% | 1260 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,485 psi | 63% | 1519 fps | 99.7% |
| Alliant RED DOT² | <<locked>> | 60% | 29,356 psi | 65% | 1273 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,442 psi | 63% | 1404 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,443 psi | 68% | 1306 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.6 gr | 60% | 20,218 psi | 45% | 1152 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,243 psi | 74% | 1362 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,353 psi | 56% | 1152 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 84% | 27,586 psi | 61% | 1624 fps | 87.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,138 psi | 23% | 853 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,808 psi | 73% | 1404 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,386 psi | 70% | 1598 fps | 96.7% |
| Lovex D037.2*² | <<locked>> | 60% | 24,323 psi | 54% | 1450 fps | 87.7% |
| Lovex S020² | <<locked>> | 60% | 33,620 psi | 75% | 1440 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,353 psi | 59% | 1289 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,240 psi | 65% | 1329 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,979 psi | 64% | 1309 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,980 psi | 69% | 1316 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,649 psi | 75% | 1302 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 72% | 26,295 psi | 58% | 1526 fps | 87.5% |
| ReloadSwiss RS 14² | 5 gr | 60% | 9,631 psi | 21% | 863 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,528 psi | 61% | 1378 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,136 psi | 58% | 1480 fps | 96.1% |
| Rottweil P 806² | <<locked>> | 60% | 23,743 psi | 53% | 1430 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,323 psi | 54% | 1450 fps | 87.7% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,386 psi | 70% | 1598 fps | 96.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,339 psi | 59% | 1329 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,734 psi | 71% | 1362 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,111 psi | 69% | 1375 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,315 psi | 74% | 1273 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 92% | 22,423 psi | 50% | 1430 fps | 86.9% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,974 psi | 51% | 1329 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,821 psi | 69% | 1371 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 32,895 psi | 73% | 1594 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,822 psi | 73% | 1467 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,443 psi | 65% | 1391 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,702 psi | 62% | 1434 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,898 psi | 42% | 1296 fps | 92.2% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,360 psi | 36% | 1276 fps | 93.9% |
| Vihtavuori N110* | <<locked>> | 88% | 24,439 psi | 54% | 1503 fps | 85.4% |
| Vihtavuori N320² | <<locked>> | 60% | 33,707 psi | 75% | 1355 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.7 gr | 60% | 17,318 psi | 39% | 1017 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,663 psi | 75% | 1414 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,283 psi | 65% | 1391 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,931 psi | 53% | 1362 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,427 psi | 61% | 1329 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 63 powders for .357 Maximum loaded with the .356 | 145gr | H&N HP HS. Hodgdon LilGun delivers the highest muzzle velocity at 1,795 fps; across all powders the maximum-charge window runs from 1,129 fps to 1,795 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 46–90 %, 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 .356 | 145gr | H&N HP HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Accurate No. 9, Alliant 2400 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.