Load Specifications
Bullet:.355 | 124gr | Speer TMJ
Bullet Manufacturer:Speer
Bullet Weight:124 gr
Bullet Diameter:0.355"
Bullet Length:<<locked>>
Caliber:.357 Mag. load data
Case Length (l3):1.29"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:25.6 Grains of Water
Primer Size:Small Pistol Magnum (SPM)
Barrel Length:6"
Max. allowed Pressure:43,511 psi
Load data in caliber .357 Mag. with .355 | 124gr | Speer TMJ bullet and 132 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, SNPE Vectan BA7 1/2 and Vihtavuori N350.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 37,028 psi | 85% | 1460 fps | 100% |
| Accurate No. 2² | <<locked>> | 76% | 38,870 psi | 89% | 1503 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 38,638 psi | 89% | 1581 fps | 99.4% |
| Accurate No. 7* | <<locked>> | 80% | 39,102 psi | 90% | 1640 fps | 91.8% |
| Accurate No. 7*² | <<locked>> | 76% | 36,709 psi | 84% | 1624 fps | 91.5% |
| Accurate Solo 1000 | <<locked>> | 80% | 38,696 psi | 89% | 1375 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,390 psi | 84% | 1365 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 38,450 psi | 88% | 1437 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 39,363 psi | 90% | 1463 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 37,072 psi | 85% | 1558 fps | 98.3% |
| ADI AP 100ᴾ | <<locked>> | 100% | 39,131 psi | 90% | 1604 fps | 99% |
| ADI AP 70N² | <<locked>> | 68% | 36,390 psi | 84% | 1427 fps | 100% |
| ADI AP 70N² | <<locked>> | 68% | 37,478 psi | 86% | 1457 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,202 psi | 86% | 1243 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,898 psi | 87% | 1270 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 39,218 psi | 90% | 1302 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 36,840 psi | 85% | 1293 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 37,753 psi | 87% | 1332 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 39,204 psi | 90% | 1365 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 37,811 psi | 87% | 1385 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 39,117 psi | 90% | 1414 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 36,172 psi | 83% | 1398 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 37,449 psi | 86% | 1424 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 35,824 psi | 82% | 1578 fps | 89.1% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 38,479 psi | 88% | 1640 fps | 91.1% |
| Alliant BULLSEYE² | <<locked>> | 72% | 36,492 psi | 84% | 1490 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 72% | 37,579 psi | 86% | 1522 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,174 psi | 88% | 1391 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 35,998 psi | 83% | 1381 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 38,522 psi | 89% | 1516 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 37,231 psi | 86% | 1516 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 38,348 psi | 88% | 1627 fps | 98.1% |
| Alliant POWER PISTOL | <<locked>> | 80% | 36,158 psi | 83% | 1611 fps | 97.9% |
| Alliant RED DOT | <<locked>> | 80% | 36,535 psi | 84% | 1342 fps | 100% |
| Alliant RED DOT | <<locked>> | 80% | 37,202 psi | 86% | 1365 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 37,304 psi | 86% | 1503 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 38,189 psi | 88% | 1532 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 37,913 psi | 87% | 1516 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 36,274 psi | 83% | 1509 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 38,479 psi | 88% | 1378 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 35,940 psi | 83% | 1365 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 38,232 psi | 88% | 1385 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 36,883 psi | 85% | 1388 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 38,754 psi | 89% | 1401 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 36,463 psi | 84% | 1388 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 80% | 38,334 psi | 88% | 1447 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,536 psi | 86% | 1280 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 38,682 psi | 89% | 1309 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 36,956 psi | 85% | 1535 fps | 99.8% |
| Hodgdon HS-6² | <<locked>> | 68% | 39,073 psi | 90% | 1581 fps | 100% |
| Hodgdon Longshot² | <<locked>> | 64% | 36,303 psi | 83% | 1519 fps | 100% |
| Hodgdon Longshot² | <<locked>> | 64% | 37,826 psi | 87% | 1555 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,273 psi | 37% | 1007 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,056 psi | 39% | 1033 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 36,390 psi | 84% | 1427 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 38,319 psi | 88% | 1467 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 38,667 psi | 89% | 1581 fps | 99.4% |
| Lovex D037.1* | <<locked>> | 80% | 39,102 psi | 90% | 1640 fps | 91.8% |
| Lovex D037.1*² | <<locked>> | 76% | 36,709 psi | 84% | 1624 fps | 91.5% |
| Lovex S011² | <<locked>> | 68% | 37,492 psi | 86% | 1394 fps | 100% |
| Lovex S011² | <<locked>> | 68% | 38,638 psi | 89% | 1424 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 38,130 psi | 88% | 1467 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 35,418 psi | 81% | 1450 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 38,725 psi | 89% | 1434 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,970 psi | 85% | 1430 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 38,421 psi | 88% | 1434 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 36,898 psi | 85% | 1430 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 36,230 psi | 83% | 1378 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 37,362 psi | 86% | 1407 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 39,117 psi | 90% | 1391 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 36,738 psi | 84% | 1378 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 38,783 psi | 89% | 1332 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,593 psi | 84% | 1322 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 36,463 psi | 84% | 1496 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 38,334 psi | 88% | 1535 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 37,550 psi | 86% | 1529 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 39,059 psi | 90% | 1568 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 37,347 psi | 86% | 1404 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,201 psi | 81% | 1391 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,866 psi | 34% | 1010 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,621 psi | 36% | 1037 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 37,086 psi | 85% | 1496 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 38,624 psi | 89% | 1529 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 35,665 psi | 82% | 1578 fps | 92.7% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 38,130 psi | 88% | 1634 fps | 94.3% |
| Rottweil P 801² | <<locked>> | 68% | 38,595 psi | 89% | 1381 fps | 100% |
| Rottweil P 801² | <<locked>> | 64% | 35,491 psi | 82% | 1358 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 34,824 psi | 80% | 1594 fps | 99.9% |
| Rottweil P 806 | <<locked>> | 88% | 37,594 psi | 86% | 1644 fps | 100% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 38,667 psi | 89% | 1581 fps | 99.4% |
| Shooters World Major Pistol* | <<locked>> | 80% | 39,102 psi | 90% | 1640 fps | 91.8% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,709 psi | 84% | 1624 fps | 91.5% |
| SNPE Vectan A0 | <<locked>> | 88% | 39,131 psi | 90% | 1480 fps | 100% |
| SNPE Vectan A0 | <<locked>> | 84% | 37,188 psi | 85% | 1473 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 36,651 psi | 84% | 1394 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,985 psi | 87% | 1427 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 38,972 psi | 90% | 1444 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,999 psi | 85% | 1437 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,362 psi | 86% | 1280 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,724 psi | 87% | 1302 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 38,290 psi | 88% | 1529 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 35,940 psi | 83% | 1519 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 38,029 psi | 87% | 1440 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 36,303 psi | 83% | 1434 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 34,809 psi | 80% | 1578 fps | 98.5% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,347 psi | 86% | 1634 fps | 99.2% |
| Somchem MP200² | <<locked>> | 76% | 36,724 psi | 84% | 1490 fps | 100% |
| Somchem MP200² | <<locked>> | 76% | 38,058 psi | 87% | 1522 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 36,114 psi | 83% | 1453 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 37,681 psi | 87% | 1493 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 37,768 psi | 87% | 1585 fps | 96.2% |
| Somchem S221² | <<locked>> | 68% | 34,679 psi | 80% | 1555 fps | 95.7% |
| Vihtavuori 3N37 | <<locked>> | 84% | 37,753 psi | 87% | 1549 fps | 100% |
| Vihtavuori 3N37 | <<locked>> | 84% | 39,291 psi | 90% | 1585 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 38,261 psi | 88% | 1604 fps | 94.5% |
| Vihtavuori 3N38* | <<locked>> | 96% | 36,869 psi | 85% | 1601 fps | 94.6% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 32,300 psi | 74% | 1575 fps | 96% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 34,998 psi | 80% | 1634 fps | 97.4% |
| Vihtavuori N320² | <<locked>> | 76% | 38,319 psi | 88% | 1388 fps | 100% |
| Vihtavuori N320² | <<locked>> | 72% | 35,926 psi | 83% | 1375 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,791 psi | 68% | 1204 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,821 psi | 71% | 1230 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,289 psi | 86% | 1440 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 39,233 psi | 90% | 1473 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 36,550 psi | 84% | 1460 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 38,087 psi | 88% | 1496 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 36,230 psi | 83% | 1519 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 38,000 psi | 87% | 1558 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 35,447 psi | 81% | 1391 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 36,390 psi | 84% | 1417 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 37,159 psi | 85% | 1440 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 39,015 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% | 22,655 psi | 52% | 1237 fps | 99.6% |
| Accurate No. 2² | <<locked>> | 60% | 23,293 psi | 54% | 1266 fps | 99.8% |
| Accurate No. 5² | <<locked>> | 60% | 34,026 psi | 78% | 1512 fps | 98.6% |
| Accurate No. 7*² | <<locked>> | 72% | 29,414 psi | 68% | 1483 fps | 86.9% |
| Accurate No. 7*² | <<locked>> | 68% | 27,470 psi | 63% | 1463 fps | 86.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,641 psi | 54% | 1168 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,642 psi | 57% | 1198 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,841 psi | 46% | 1155 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,668 psi | 48% | 1184 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,375 psi | 38% | 1138 fps | 86.2% |
| ADI AP 100*² | <<locked>> | 64% | 15,519 psi | 36% | 1125 fps | 85.8% |
| ADI AP 70N² | <<locked>> | 60% | 28,340 psi | 65% | 1316 fps | 100% |
| ADI AP 70N² | <<locked>> | 60% | 29,689 psi | 68% | 1352 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,237 psi | 60% | 1099 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,658 psi | 61% | 1119 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,758 psi | 57% | 1112 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,005 psi | 57% | 1129 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,351 psi | 54% | 1132 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,511 psi | 56% | 1165 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 25,309 psi | 58% | 1211 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,252 psi | 60% | 1237 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 20,392 psi | 47% | 1161 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,495 psi | 49% | 1191 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 29,428 psi | 68% | 1467 fps | 85.6% |
| Alliant BLUE DOT* | <<locked>> | 88% | 28,123 psi | 65% | 1460 fps | 85.5% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,020 psi | 60% | 1325 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,731 psi | 61% | 1352 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,858 psi | 53% | 1171 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,859 psi | 55% | 1201 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,620 psi | 34% | 1070 fps | 97.6% |
| Alliant Herco² | <<locked>> | 60% | 15,185 psi | 35% | 1096 fps | 98.3% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,840 psi | 43% | 1237 fps | 87.7% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,160 psi | 46% | 1286 fps | 89.6% |
| Alliant RED DOT² | <<locked>> | 60% | 22,974 psi | 53% | 1145 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 23,511 psi | 54% | 1165 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 29,138 psi | 67% | 1385 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,327 psi | 70% | 1417 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,189 psi | 46% | 1217 fps | 99.8% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,885 psi | 48% | 1247 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,205 psi | 51% | 1155 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,090 psi | 53% | 1181 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,156 psi | 33% | 1007 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,837 psi | 34% | 1030 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 24,323 psi | 56% | 1214 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,454 psi | 59% | 1243 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 22,423 psi | 52% | 1214 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,827 psi | 48% | 1047 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,248 psi | 49% | 1066 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 28,021 psi | 64% | 1394 fps | 98.2% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,588 psi | 68% | 1437 fps | 98.9% |
| Hodgdon Longshot² | <<locked>> | 60% | 31,212 psi | 72% | 1444 fps | 99.7% |
| Hodgdon Longshot² | <<locked>> | 60% | 32,909 psi | 76% | 1486 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,498 psi | 17% | 748 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,731 psi | 18% | 764 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,120 psi | 55% | 1247 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,918 psi | 57% | 1273 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 33,982 psi | 78% | 1512 fps | 98.6% |
| Lovex D037.1*² | <<locked>> | 72% | 29,414 psi | 68% | 1483 fps | 86.9% |
| Lovex D037.1*² | <<locked>> | 68% | 27,470 psi | 63% | 1463 fps | 86.4% |
| Lovex S011² | <<locked>> | 60% | 29,515 psi | 68% | 1293 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 30,908 psi | 71% | 1325 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 23,511 psi | 54% | 1257 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 24,787 psi | 57% | 1293 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,014 psi | 44% | 1135 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,812 psi | 46% | 1161 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,059 psi | 46% | 1165 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,625 psi | 50% | 1204 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,524 psi | 49% | 1161 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,466 psi | 52% | 1191 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,235 psi | 53% | 1171 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,265 psi | 56% | 1201 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 26,194 psi | 60% | 1171 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,311 psi | 63% | 1201 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 28,413 psi | 65% | 1378 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 29,791 psi | 68% | 1411 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 32,372 psi | 74% | 1457 fps | 99.8% |
| Ramshot True Blue² | <<locked>> | 60% | 34,026 psi | 78% | 1499 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 26,600 psi | 61% | 1260 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,195 psi | 65% | 1296 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,150 psi | 16% | 748 fps | 98.6% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,339 psi | 17% | 764 fps | 99% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 18,115 psi | 42% | 1181 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,392 psi | 45% | 1220 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 25,005 psi | 57% | 1381 fps | 86.6% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 23,221 psi | 53% | 1358 fps | 85.9% |
| Rottweil P 801² | <<locked>> | 60% | 30,139 psi | 69% | 1276 fps | 100% |
| Rottweil P 801² | <<locked>> | 60% | 31,531 psi | 72% | 1309 fps | 100% |
| Rottweil P 806*² | 10.4 gr | 60% | 13,343 psi | 31% | 1129 fps | 87.9% |
| Rottweil P 806*² | 10.4 gr | 60% | 14,156 psi | 33% | 1161 fps | 89.4% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 33,982 psi | 78% | 1512 fps | 98.6% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 29,414 psi | 68% | 1483 fps | 86.9% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 27,470 psi | 63% | 1463 fps | 86.4% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,116 psi | 44% | 1155 fps | 99.5% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,725 psi | 45% | 1181 fps | 99.8% |
| SNPE Vectan A1² | <<locked>> | 60% | 23,772 psi | 55% | 1211 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,236 psi | 56% | 1230 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,945 psi | 53% | 1214 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,424 psi | 54% | 1234 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,862 psi | 64% | 1158 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,949 psi | 64% | 1175 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.7 gr | 60% | 16,157 psi | 37% | 1112 fps | 92% |
| SNPE Vectan BA7 1/2*² | 7.7 gr | 60% | 16,897 psi | 39% | 1145 fps | 93.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,292 psi | 51% | 1207 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,612 psi | 54% | 1243 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 20,262 psi | 47% | 1296 fps | 91.4% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 21,611 psi | 50% | 1339 fps | 92.9% |
| Somchem MP200² | <<locked>> | 60% | 23,279 psi | 54% | 1273 fps | 99.9% |
| Somchem MP200² | <<locked>> | 60% | 24,308 psi | 56% | 1306 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,277 psi | 49% | 1211 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,901 psi | 50% | 1240 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 25,208 psi | 58% | 1365 fps | 90.3% |
| Somchem S221*² | <<locked>> | 60% | 26,527 psi | 61% | 1407 fps | 91.8% |
| Vihtavuori 3N37² | <<locked>> | 60% | 18,057 psi | 42% | 1191 fps | 95% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,377 psi | 45% | 1234 fps | 96.3% |
| Vihtavuori 3N38* | <<locked>> | 80% | 21,843 psi | 50% | 1306 fps | 85.1% |
| Vihtavuori 3N38* | <<locked>> | 80% | 23,119 psi | 53% | 1348 fps | 86.9% |
| Vihtavuori N105* | <<locked>> | 80% | 17,941 psi | 41% | 1266 fps | 85.4% |
| Vihtavuori N105*² | <<locked>> | 76% | 17,129 psi | 39% | 1253 fps | 85.1% |
| Vihtavuori N320² | <<locked>> | 60% | 24,308 psi | 56% | 1198 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 25,295 psi | 58% | 1227 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,676 psi | 29% | 906 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 13,169 psi | 30% | 928 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,438 psi | 54% | 1243 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,207 psi | 56% | 1270 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,508 psi | 47% | 1204 fps | 99.9% |
| Vihtavuori N340² | <<locked>> | 60% | 21,147 psi | 49% | 1230 fps | 100% |
| Vihtavuori N350*² | 7.5 gr | 60% | 15,780 psi | 36% | 1125 fps | 93.4% |
| Vihtavuori N350*² | 7.5 gr | 60% | 16,723 psi | 38% | 1165 fps | 94.7% |
| Winchester 231² | <<locked>> | 60% | 31,343 psi | 72% | 1335 fps | 100% |
| Winchester 231² | <<locked>> | 60% | 32,474 psi | 75% | 1365 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 19,740 psi | 45% | 1168 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,726 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 41 powders for .357 Mag. loaded with the .355 | 124gr | Speer TMJ. Rottweil P 806 delivers the highest muzzle velocity at 1,644 fps; across all powders the maximum-charge window runs from 1,007 fps to 1,644 fps. ADI AP 100 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 34–90 %, leaving at least 10 % headroom. ADI AP 100, ADI AP 100, Alliant Herco 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, SNPE Vectan BA7 1/2, Vihtavuori N350 rank at the top here: for .357 Mag. with the .355 | 124gr | Speer TMJ they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ReloadSwiss RS 24, ReloadSwiss RS 24, Vihtavuori 3N38 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, Hodgdon TrailBoss, ReloadSwiss RS 14 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.