Load Specifications
Load data in caliber .357 Mag. with .355 | 124gr | CamPro HP bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori N350 and ADI AP 100.
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>> | 76% | 38,841 psi | 89% | 1499 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 36,680 psi | 84% | 1624 fps | 91.4% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,361 psi | 84% | 1365 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 39,334 psi | 90% | 1463 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 39,102 psi | 90% | 1604 fps | 99% |
| ADI AP 70N² | <<locked>> | 68% | 37,449 psi | 86% | 1457 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,869 psi | 87% | 1270 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 36,854 psi | 85% | 1293 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 39,204 psi | 90% | 1365 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 39,088 psi | 90% | 1414 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 37,420 psi | 86% | 1427 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 38,479 psi | 88% | 1640 fps | 91.1% |
| Alliant BULLSEYE² | <<locked>> | 72% | 37,550 psi | 86% | 1519 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 35,969 psi | 83% | 1378 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 37,202 psi | 86% | 1516 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 36,869 psi | 85% | 1624 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 80% | 37,246 psi | 86% | 1365 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 39,001 psi | 90% | 1542 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,245 psi | 83% | 1509 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 35,911 psi | 83% | 1365 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 36,854 psi | 85% | 1388 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 36,434 psi | 84% | 1388 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 38,653 psi | 89% | 1309 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 39,044 psi | 90% | 1581 fps | 100% |
| Hodgdon Longshot² | <<locked>> | 64% | 37,840 psi | 87% | 1555 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,042 psi | 39% | 1033 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 38,290 psi | 88% | 1467 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 36,680 psi | 84% | 1624 fps | 91.4% |
| Lovex S011² | <<locked>> | 68% | 38,609 psi | 89% | 1424 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 35,389 psi | 81% | 1450 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,941 psi | 85% | 1427 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 36,912 psi | 85% | 1430 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 37,333 psi | 86% | 1407 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 36,709 psi | 84% | 1378 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,564 psi | 84% | 1322 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 38,305 psi | 88% | 1535 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 39,030 psi | 90% | 1568 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,172 psi | 81% | 1391 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,606 psi | 36% | 1037 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 38,580 psi | 89% | 1529 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 38,087 psi | 88% | 1634 fps | 94.3% |
| Rottweil P 801² | <<locked>> | 64% | 35,462 psi | 82% | 1358 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 37,608 psi | 86% | 1644 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,680 psi | 84% | 1624 fps | 91.4% |
| SNPE Vectan A0 | <<locked>> | 84% | 37,173 psi | 85% | 1473 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,956 psi | 87% | 1427 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,999 psi | 85% | 1437 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,710 psi | 87% | 1302 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 35,911 psi | 83% | 1519 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,274 psi | 83% | 1437 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,289 psi | 86% | 1634 fps | 99.2% |
| Somchem MP200² | <<locked>> | 76% | 38,072 psi | 88% | 1522 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 37,652 psi | 87% | 1493 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 35,317 psi | 81% | 1565 fps | 95.9% |
| Vihtavuori 3N37 | <<locked>> | 84% | 39,349 psi | 90% | 1585 fps | 100% |
| Vihtavuori 3N38* | <<locked>> | 96% | 36,825 psi | 85% | 1601 fps | 94.6% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 34,969 psi | 80% | 1634 fps | 97.4% |
| Vihtavuori N320² | <<locked>> | 72% | 35,940 psi | 83% | 1375 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,792 psi | 71% | 1230 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 39,204 psi | 90% | 1473 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 38,058 psi | 87% | 1496 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 37,971 psi | 87% | 1558 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 36,361 psi | 84% | 1417 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 38,957 psi | 90% | 1476 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% | 23,264 psi | 53% | 1263 fps | 99.8% |
| Accurate No. 7*² | <<locked>> | 68% | 27,441 psi | 63% | 1463 fps | 86.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,627 psi | 57% | 1198 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,668 psi | 48% | 1184 fps | 100% |
| ADI AP 100*² | 7.7 gr | 64% | 15,505 psi | 36% | 1125 fps | 85.8% |
| ADI AP 70N² | <<locked>> | 60% | 29,704 psi | 68% | 1352 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,643 psi | 61% | 1119 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,730 psi | 59% | 1142 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,497 psi | 56% | 1165 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,237 psi | 60% | 1237 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,524 psi | 49% | 1194 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 88% | 28,123 psi | 65% | 1460 fps | 85.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,701 psi | 61% | 1352 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,830 psi | 55% | 1201 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,577 psi | 36% | 1109 fps | 98.5% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,146 psi | 46% | 1283 fps | 89.5% |
| Alliant RED DOT² | <<locked>> | 60% | 23,496 psi | 54% | 1165 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,313 psi | 70% | 1417 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,914 psi | 48% | 1247 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,076 psi | 53% | 1181 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,823 psi | 34% | 1030 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,425 psi | 58% | 1243 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,234 psi | 49% | 1063 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,559 psi | 68% | 1437 fps | 98.9% |
| Hodgdon Longshot² | <<locked>> | 60% | 32,880 psi | 76% | 1486 fps | 99.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,716 psi | 18% | 764 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,889 psi | 57% | 1273 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 27,441 psi | 63% | 1463 fps | 86.3% |
| Lovex S011² | <<locked>> | 60% | 30,908 psi | 71% | 1325 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 24,801 psi | 57% | 1293 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,798 psi | 46% | 1161 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,596 psi | 50% | 1204 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,452 psi | 52% | 1191 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,250 psi | 56% | 1201 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,296 psi | 63% | 1201 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 29,762 psi | 68% | 1411 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 33,997 psi | 78% | 1499 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,166 psi | 65% | 1296 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,353 psi | 17% | 764 fps | 99% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,377 psi | 45% | 1220 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 23,250 psi | 53% | 1358 fps | 85.9% |
| Rottweil P 801² | <<locked>> | 60% | 31,531 psi | 72% | 1309 fps | 100% |
| Rottweil P 806*² | 10.4 gr | 60% | 14,185 psi | 33% | 1161 fps | 89.5% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 27,441 psi | 63% | 1463 fps | 86.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,711 psi | 45% | 1181 fps | 99.8% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,221 psi | 56% | 1230 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,409 psi | 54% | 1234 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,934 psi | 64% | 1175 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 16,926 psi | 39% | 1145 fps | 93.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,583 psi | 54% | 1243 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 22,133 psi | 51% | 1352 fps | 93.3% |
| Somchem MP200² | <<locked>> | 60% | 24,294 psi | 56% | 1309 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,886 psi | 50% | 1240 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 26,498 psi | 61% | 1407 fps | 91.8% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,363 psi | 45% | 1234 fps | 96.3% |
| Vihtavuori 3N38* | <<locked>> | 80% | 23,569 psi | 54% | 1362 fps | 87.3% |
| Vihtavuori N105*² | <<locked>> | 76% | 17,143 psi | 39% | 1253 fps | 85.1% |
| Vihtavuori N320² | <<locked>> | 60% | 25,324 psi | 58% | 1227 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 13,198 psi | 30% | 928 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,192 psi | 56% | 1270 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 21,132 psi | 49% | 1230 fps | 100% |
| Vihtavuori N350*² | 7.5 gr | 60% | 16,708 psi | 38% | 1165 fps | 94.7% |
| Winchester 231² | <<locked>> | 60% | 32,460 psi | 75% | 1365 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,697 psi | 48% | 1198 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 64 powders for .357 Mag. loaded with the .355 | 124gr | CamPro HP. Rottweil P 806 delivers the highest muzzle velocity at 1,644 fps; across all powders the maximum-charge window runs from 1,033 fps to 1,644 fps. ADI AP 100 gives the best case fill at 100 %, and 29 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 36–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant BLUE DOT, Hodgdon TrailBoss 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. Rottweil P 806, Vihtavuori N350, ADI AP 100 rank at the top here: for .357 Mag. with the .355 | 124gr | CamPro HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, Alliant BLUE DOT, Lovex D037.1 burn incompletely and react more sensitively to barrel length and temperature. ADI APS 350, Alliant Herco, Baschieri & Pellagri 102 Pistol 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.