Load Specifications
Load data in caliber .357 Mag. with .36 | 125gr | Rim Rock SWC?FB bullet and 65 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 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% | 38,203 psi | 88% | 1480 fps | 100% |
| Accurate No. 7*² | <<locked>> | 76% | 36,042 psi | 83% | 1604 fps | 91.1% |
| Accurate Solo 1000² | <<locked>> | 76% | 36,434 psi | 84% | 1355 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 36,042 psi | 83% | 1411 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 38,914 psi | 89% | 1591 fps | 99% |
| ADI AP 70N² | <<locked>> | 68% | 37,666 psi | 87% | 1450 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 37,884 psi | 87% | 1257 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 36,941 psi | 85% | 1283 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 39,291 psi | 90% | 1355 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 39,247 psi | 90% | 1404 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 37,797 psi | 87% | 1417 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 37,826 psi | 87% | 1621 fps | 90.8% |
| Alliant BULLSEYE² | <<locked>> | 72% | 37,768 psi | 87% | 1509 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 38,653 psi | 89% | 1401 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 36,840 psi | 85% | 1499 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 35,824 psi | 82% | 1594 fps | 97.8% |
| Alliant RED DOT | <<locked>> | 80% | 37,260 psi | 86% | 1355 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 38,406 psi | 88% | 1522 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 35,708 psi | 82% | 1490 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 36,071 psi | 83% | 1355 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 36,463 psi | 84% | 1371 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 36,172 psi | 83% | 1375 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 38,595 psi | 89% | 1280 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 38,856 psi | 89% | 1568 fps | 100% |
| Hodgdon Longshot² | <<locked>> | 64% | 37,536 psi | 86% | 1542 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,984 psi | 39% | 1024 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 37,666 psi | 87% | 1450 fps | 100% |
| Lovex D037.1*² | <<locked>> | 76% | 36,042 psi | 83% | 1604 fps | 91.1% |
| Lovex S011² | <<locked>> | 68% | 38,798 psi | 89% | 1414 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 39,291 psi | 90% | 1486 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 36,347 psi | 84% | 1411 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 36,230 psi | 83% | 1411 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 37,492 psi | 86% | 1401 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 35,955 psi | 83% | 1358 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 36,593 psi | 84% | 1312 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 37,898 psi | 87% | 1519 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 38,783 psi | 89% | 1552 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 38,783 psi | 89% | 1421 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,548 psi | 36% | 1027 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 38,087 psi | 88% | 1509 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 38,000 psi | 87% | 1621 fps | 94.2% |
| Rottweil P 801² | <<locked>> | 68% | 39,001 psi | 90% | 1391 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 36,898 psi | 85% | 1624 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 36,042 psi | 83% | 1604 fps | 91.1% |
| SNPE Vectan A0 | <<locked>> | 84% | 36,680 psi | 84% | 1453 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 37,492 psi | 86% | 1411 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 36,535 psi | 84% | 1421 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 37,782 psi | 87% | 1293 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 35,665 psi | 82% | 1503 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 39,044 psi | 90% | 1457 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 37,043 psi | 85% | 1621 fps | 99.2% |
| Somchem MP200² | <<locked>> | 76% | 38,435 psi | 88% | 1516 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 37,159 psi | 85% | 1473 fps | 100% |
| Somchem S221² | <<locked>> | 72% | 39,334 psi | 90% | 1614 fps | 97.1% |
| Vihtavuori 3N37 | <<locked>> | 84% | 39,131 psi | 90% | 1572 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 96% | 38,870 psi | 89% | 1617 fps | 95.2% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 34,911 psi | 80% | 1624 fps | 97.4% |
| Vihtavuori N310² | <<locked>> | 64% | 39,218 psi | 90% | 1306 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 38,464 psi | 88% | 1394 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 36,085 psi | 83% | 1283 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,318 psi | 86% | 1444 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 37,362 psi | 86% | 1476 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 35,969 psi | 83% | 1526 fps | 100% |
| Winchester 231² | <<locked>> | 64% | 36,579 psi | 84% | 1407 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 38,667 psi | 89% | 1463 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% | 23,293 psi | 54% | 1253 fps | 99.8% |
| Accurate No. 7*² | <<locked>> | 68% | 26,803 psi | 62% | 1440 fps | 85.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,540 psi | 56% | 1184 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,595 psi | 47% | 1175 fps | 100% |
| ADI AP 100*² | 7.6 gr | 64% | 15,563 psi | 36% | 1119 fps | 85.9% |
| ADI AP 70N² | <<locked>> | 60% | 29,747 psi | 68% | 1342 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,498 psi | 61% | 1109 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,628 psi | 59% | 1129 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,352 psi | 56% | 1152 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,150 psi | 60% | 1227 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,495 psi | 49% | 1184 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 88% | 27,456 psi | 63% | 1437 fps | 85.1% |
| Alliant BULLSEYE² | <<locked>> | 60% | 26,745 psi | 61% | 1342 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,757 psi | 55% | 1191 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,142 psi | 35% | 1086 fps | 98.2% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 19,725 psi | 45% | 1263 fps | 89.1% |
| Alliant RED DOT² | <<locked>> | 60% | 23,322 psi | 54% | 1155 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 30,400 psi | 70% | 1407 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,885 psi | 48% | 1234 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,003 psi | 53% | 1171 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,765 psi | 34% | 1024 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,077 psi | 58% | 1227 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 26,890 psi | 62% | 1125 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 29,225 psi | 67% | 1421 fps | 98.8% |
| Hodgdon Longshot² | <<locked>> | 60% | 32,576 psi | 75% | 1470 fps | 99.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,847 psi | 18% | 764 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,860 psi | 57% | 1263 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 26,803 psi | 62% | 1440 fps | 85.9% |
| Lovex S011² | <<locked>> | 60% | 30,937 psi | 71% | 1316 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 24,134 psi | 55% | 1273 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,754 psi | 45% | 1152 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,929 psi | 48% | 1181 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,350 psi | 51% | 1178 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,149 psi | 56% | 1191 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,180 psi | 62% | 1188 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 29,283 psi | 67% | 1394 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 33,663 psi | 77% | 1483 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,166 psi | 65% | 1286 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,208 psi | 17% | 751 fps | 98.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,363 psi | 45% | 1214 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 68% | 22,989 psi | 53% | 1342 fps | 85.6% |
| Rottweil P 801² | <<locked>> | 60% | 31,575 psi | 73% | 1299 fps | 100% |
| Rottweil P 806*² | 10.3 gr | 60% | 14,272 psi | 33% | 1158 fps | 89.7% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 26,803 psi | 62% | 1440 fps | 85.9% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,725 psi | 45% | 1175 fps | 99.8% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,294 psi | 56% | 1224 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,438 psi | 54% | 1227 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,876 psi | 64% | 1165 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.5 gr | 60% | 16,549 psi | 38% | 1129 fps | 93% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,945 psi | 53% | 1224 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 21,727 psi | 50% | 1332 fps | 93% |
| Somchem MP200² | <<locked>> | 60% | 23,772 psi | 55% | 1286 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 21,901 psi | 50% | 1227 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 26,266 psi | 60% | 1391 fps | 91.6% |
| Vihtavuori 3N37² | <<locked>> | 60% | 18,927 psi | 44% | 1217 fps | 96% |
| Vihtavuori 3N38*² | <<locked>> | 76% | 21,799 psi | 50% | 1309 fps | 85.7% |
| Vihtavuori N105* | <<locked>> | 80% | 18,956 psi | 44% | 1296 fps | 87.3% |
| Vihtavuori N310² | <<locked>> | 60% | 35,201 psi | 81% | 1263 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 24,860 psi | 57% | 1211 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 14,794 psi | 34% | 958 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,235 psi | 53% | 1243 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,958 psi | 48% | 1217 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 17,492 psi | 40% | 1178 fps | 95.4% |
| Winchester 231² | <<locked>> | 60% | 32,590 psi | 75% | 1358 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,233 psi | 47% | 1181 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 65 powders for .357 Mag. loaded with the .36 | 125gr | Rim Rock SWC?FB. Rottweil P 806 delivers the highest muzzle velocity at 1,624 fps; across all powders the maximum-charge window runs from 1,024 fps to 1,624 fps. ADI AP 100 gives the best case fill at 100 %, and 30 of the 65 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, SNPE Vectan BA7 1/2, ADI AP 100 rank at the top here: for .357 Mag. with the .36 | 125gr | Rim Rock SWC?FB 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 AP 100, ADI APS 350, Alliant Herco 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.