Load Specifications
Load data in caliber .357 Maximum with .358 | 125gr | Rim Rock SWC?FB bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant BLUE DOT, Vihtavuori N105 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: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100* | <<locked>> | 88% | 40,030 psi | 89% | 1890 fps | 88.5% |
| Accurate No. 2² | <<locked>> | 68% | 39,653 psi | 88% | 1690 fps | 100% |
| Accurate No. 7² | <<locked>> | 68% | 40,466 psi | 90% | 1896 fps | 98.1% |
| Accurate No. 9*² | <<locked>> | 72% | 35,172 psi | 78% | 1801 fps | 92.2% |
| Accurate Solo 1000² | <<locked>> | 72% | 40,321 psi | 90% | 1578 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 37,507 psi | 83% | 1601 fps | 100% |
| Accurate TCM² | <<locked>> | 76% | 40,683 psi | 90% | 1890 fps | 95.4% |
| ADI AP 100 | <<locked>> | 88% | 40,059 psi | 89% | 1814 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 39,537 psi | 88% | 1457 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,059 psi | 87% | 1483 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,407 psi | 88% | 1532 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 39,494 psi | 88% | 1581 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 38,522 psi | 86% | 1886 fps | 91% |
| Alliant BE-86² | <<locked>> | 72% | 39,102 psi | 87% | 1601 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 88% | 39,987 psi | 89% | 1883 fps | 97.3% |
| Alliant BULLSEYE² | <<locked>> | 64% | 38,218 psi | 85% | 1699 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 39,552 psi | 88% | 1588 fps | 100% |
| Alliant Herco | <<locked>> | 88% | 40,582 psi | 90% | 1726 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 72% | 39,624 psi | 88% | 1864 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 37,942 psi | 84% | 1532 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 38,479 psi | 86% | 1706 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 40,364 psi | 90% | 1575 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 39,450 psi | 88% | 1568 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 36,985 psi | 82% | 1545 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 37,608 psi | 84% | 1614 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 38,145 psi | 85% | 1470 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 96% | 40,393 psi | 90% | 1998 fps | 92.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,364 psi | 48% | 1234 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 39,784 psi | 88% | 1647 fps | 100% |
| Lovex D037.1² | <<locked>> | 68% | 40,466 psi | 90% | 1896 fps | 98.1% |
| Lovex D037.2*² | <<locked>> | 72% | 36,550 psi | 81% | 1824 fps | 92.7% |
| Lovex S020² | <<locked>> | 64% | 36,811 psi | 82% | 1627 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 38,348 psi | 85% | 1604 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 39,044 psi | 87% | 1608 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 38,638 psi | 86% | 1585 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 36,999 psi | 82% | 1539 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 39,769 psi | 88% | 1522 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 38,218 psi | 85% | 1886 fps | 92% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,175 psi | 45% | 1250 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 37,840 psi | 84% | 1677 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 37,521 psi | 83% | 1834 fps | 98.6% |
| Rottweil P 806² | <<locked>> | 76% | 39,610 psi | 88% | 1834 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 36,550 psi | 81% | 1824 fps | 92.7% |
| Shooters World Major Pistol² | <<locked>> | 68% | 40,466 psi | 90% | 1896 fps | 98.1% |
| SNPE Vectan A0² | <<locked>> | 76% | 38,986 psi | 87% | 1663 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 38,218 psi | 85% | 1591 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 37,565 psi | 84% | 1608 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 39,668 psi | 88% | 1493 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 26,890 psi | 60% | 1654 fps | 88.2% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 39,537 psi | 88% | 1745 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 37,347 psi | 83% | 1608 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 36,637 psi | 81% | 1804 fps | 100% |
| Somchem MP200² | <<locked>> | 68% | 40,234 psi | 89% | 1719 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 39,581 psi | 88% | 1683 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 38,276 psi | 85% | 1745 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 38,130 psi | 85% | 1827 fps | 99.2% |
| Vihtavuori N105 | <<locked>> | 88% | 39,566 psi | 88% | 1883 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 33,692 psi | 75% | 1821 fps | 89.3% |
| Vihtavuori N320² | <<locked>> | 68% | 40,640 psi | 90% | 1588 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 38,450 psi | 86% | 1470 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 36,405 psi | 81% | 1594 fps | 100% |
| Vihtavuori N340² | <<locked>> | 72% | 40,176 psi | 89% | 1690 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 37,695 psi | 84% | 1729 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 36,912 psi | 82% | 1608 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>> | 84% | 34,925 psi | 78% | 1804 fps | 86.1% |
| Accurate No. 2² | <<locked>> | 60% | 30,269 psi | 67% | 1549 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 29,863 psi | 66% | 1703 fps | 94.5% |
| Accurate No. 9*² | <<locked>> | 64% | 26,498 psi | 59% | 1621 fps | 87.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 29,834 psi | 66% | 1424 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,035 psi | 60% | 1440 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 22,916 psi | 51% | 1529 fps | 85.6% |
| ADI AP 100² | 11 gr | 60% | 18,710 psi | 42% | 1375 fps | 95.2% |
| ADI APS 350² | <<locked>> | 60% | 30,429 psi | 68% | 1325 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,501 psi | 66% | 1342 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,428 psi | 65% | 1385 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,416 psi | 72% | 1480 fps | 100% |
| Alliant 2400*² | <<locked>> | 76% | 29,907 psi | 67% | 1716 fps | 86.3% |
| Alliant BE-86² | <<locked>> | 60% | 28,007 psi | 62% | 1440 fps | 100% |
| Alliant BLUE DOT*² | 13.8 gr | 64% | 19,972 psi | 44% | 1444 fps | 86.1% |
| Alliant BULLSEYE² | <<locked>> | 60% | 34,113 psi | 76% | 1637 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 29,820 psi | 66% | 1444 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,407 psi | 45% | 1368 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 27,514 psi | 61% | 1637 fps | 98.8% |
| Alliant RED DOT² | <<locked>> | 60% | 28,529 psi | 63% | 1388 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 27,992 psi | 62% | 1532 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 29,327 psi | 65% | 1421 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 19,479 psi | 43% | 1250 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 32,430 psi | 72% | 1483 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 29,921 psi | 67% | 1496 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 24,860 psi | 55% | 1263 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 88% | 30,081 psi | 67% | 1801 fps | 87.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,037 psi | 22% | 938 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 31,850 psi | 71% | 1532 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 29,863 psi | 66% | 1703 fps | 94.5% |
| Lovex D037.2*² | <<locked>> | 64% | 27,195 psi | 60% | 1640 fps | 87.6% |
| Lovex S020² | <<locked>> | 60% | 32,692 psi | 73% | 1568 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 25,353 psi | 56% | 1401 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,500 psi | 63% | 1450 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,616 psi | 64% | 1434 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,168 psi | 67% | 1437 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 32,416 psi | 72% | 1421 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 76% | 29,182 psi | 65% | 1713 fps | 87.2% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 9,485 psi | 21% | 945 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 26,818 psi | 60% | 1503 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 25,440 psi | 57% | 1591 fps | 94% |
| Rottweil P 806² | <<locked>> | 60% | 22,814 psi | 51% | 1535 fps | 99.8% |
| Shooters World Heavy Pistol*² | <<locked>> | 64% | 27,195 psi | 60% | 1640 fps | 87.6% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 29,863 psi | 66% | 1703 fps | 94.5% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,498 psi | 57% | 1447 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 30,589 psi | 68% | 1480 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 29,907 psi | 67% | 1493 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 32,735 psi | 73% | 1394 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 96% | 24,076 psi | 54% | 1585 fps | 85.8% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,495 psi | 50% | 1444 fps | 99.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 29,878 psi | 66% | 1496 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 31,618 psi | 70% | 1719 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 31,662 psi | 70% | 1594 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,471 psi | 63% | 1509 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 26,353 psi | 59% | 1545 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,130 psi | 40% | 1385 fps | 89.2% |
| Vihtavuori N105*² | 12.4 gr | 60% | 15,302 psi | 34% | 1345 fps | 90.2% |
| Vihtavuori N110* | <<locked>> | 96% | 29,805 psi | 66% | 1742 fps | 87% |
| Vihtavuori N320² | <<locked>> | 60% | 32,489 psi | 72% | 1476 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 16,911 psi | 38% | 1115 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 32,329 psi | 72% | 1535 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,108 psi | 63% | 1509 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,047 psi | 51% | 1470 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 26,687 psi | 59% | 1447 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 10 powders for .357 Maximum loaded with the .358 | 125gr | Rim Rock SWC?FB. Hodgdon LilGun delivers the highest muzzle velocity at 1,998 fps; across all powders the maximum-charge window runs from 1,234 fps to 1,998 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 10 of the 10 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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. Alliant BLUE DOT, Vihtavuori N105, ADI AP 100 rank at the top here: for .357 Maximum with the .358 | 125gr | Rim Rock SWC?FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon LilGun burn incompletely and react more sensitively to barrel length and temperature. 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.