Load Specifications
Load data in caliber .357 Maximum with .358 | 148gr | Rim Rock SWC Top Shelf 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% | 39,392 psi | 88% | 1706 fps | 89.9% |
| Accurate No. 2² | <<locked>> | 68% | 39,160 psi | 87% | 1496 fps | 100% |
| Accurate No. 7² | <<locked>> | 68% | 40,147 psi | 89% | 1703 fps | 98.8% |
| Accurate No. 9² | <<locked>> | 76% | 40,466 psi | 90% | 1709 fps | 95.6% |
| Accurate Solo 1000² | <<locked>> | 72% | 39,885 psi | 89% | 1394 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 37,188 psi | 83% | 1417 fps | 100% |
| Accurate TCM² | <<locked>> | 76% | 40,321 psi | 90% | 1703 fps | 96.5% |
| ADI AP 100 | <<locked>> | 88% | 40,103 psi | 89% | 1624 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 39,711 psi | 88% | 1289 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 38,740 psi | 86% | 1312 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 38,957 psi | 87% | 1348 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 39,653 psi | 88% | 1404 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 37,811 psi | 84% | 1696 fps | 92.3% |
| Alliant BE-86² | <<locked>> | 72% | 39,102 psi | 87% | 1424 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 88% | 39,436 psi | 88% | 1690 fps | 98.1% |
| Alliant BULLSEYE² | <<locked>> | 64% | 38,392 psi | 85% | 1512 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 39,842 psi | 89% | 1411 fps | 100% |
| Alliant Herco | <<locked>> | 88% | 40,567 psi | 90% | 1539 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 72% | 39,407 psi | 88% | 1667 fps | 100% |
| Alliant RED DOT² | <<locked>> | 72% | 37,811 psi | 84% | 1355 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 38,334 psi | 85% | 1516 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 40,030 psi | 89% | 1391 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 39,291 psi | 87% | 1394 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 36,608 psi | 81% | 1371 fps | 100% |
| Hodgdon Clays² | <<locked>> | 72% | 40,611 psi | 90% | 1312 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 96% | 39,566 psi | 88% | 1808 fps | 94% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,335 psi | 47% | 1093 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 39,624 psi | 88% | 1460 fps | 100% |
| Lovex D037.1² | <<locked>> | 68% | 40,147 psi | 89% | 1703 fps | 98.8% |
| Lovex D037.2*² | <<locked>> | 72% | 35,998 psi | 80% | 1640 fps | 94% |
| Lovex S020² | <<locked>> | 64% | 36,840 psi | 82% | 1447 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 38,522 psi | 86% | 1427 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 38,870 psi | 86% | 1424 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 38,609 psi | 86% | 1404 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 40,451 psi | 90% | 1404 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 39,958 psi | 89% | 1348 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 37,623 psi | 84% | 1703 fps | 93.3% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 40,509 psi | 90% | 1427 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,262 psi | 45% | 1112 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 37,507 psi | 83% | 1486 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 37,159 psi | 83% | 1644 fps | 99.3% |
| Rottweil P 806² | <<locked>> | 76% | 39,189 psi | 87% | 1644 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 35,998 psi | 80% | 1640 fps | 94% |
| Shooters World Major Pistol² | <<locked>> | 68% | 40,147 psi | 89% | 1703 fps | 98.8% |
| SNPE Vectan A0² | <<locked>> | 76% | 38,725 psi | 86% | 1473 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 38,261 psi | 85% | 1414 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 37,637 psi | 84% | 1427 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 39,465 psi | 88% | 1319 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 26,411 psi | 59% | 1490 fps | 89.8% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 39,175 psi | 87% | 1555 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 40,683 psi | 90% | 1467 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 36,230 psi | 81% | 1611 fps | 100% |
| Somchem MP200² | <<locked>> | 68% | 39,668 psi | 88% | 1526 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 38,957 psi | 87% | 1490 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 38,551 psi | 86% | 1562 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 37,695 psi | 84% | 1637 fps | 99.6% |
| Vihtavuori N105 | <<locked>> | 88% | 38,928 psi | 87% | 1686 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 33,098 psi | 74% | 1644 fps | 90.9% |
| Vihtavuori N320² | <<locked>> | 68% | 40,364 psi | 90% | 1404 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 38,159 psi | 85% | 1299 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 36,753 psi | 82% | 1421 fps | 100% |
| Vihtavuori N340² | <<locked>> | 72% | 39,929 psi | 89% | 1499 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 36,927 psi | 82% | 1532 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 37,086 psi | 82% | 1434 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% | 34,069 psi | 76% | 1621 fps | 87.4% |
| Accurate No. 2² | <<locked>> | 60% | 30,414 psi | 68% | 1381 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 29,544 psi | 66% | 1532 fps | 95.7% |
| Accurate No. 9*² | <<locked>> | 60% | 22,510 psi | 50% | 1378 fps | 86% |
| Accurate Solo 1000² | <<locked>> | 60% | 29,718 psi | 66% | 1260 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 26,905 psi | 60% | 1276 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 22,727 psi | 51% | 1378 fps | 87.6% |
| ADI AP 100² | 9.4 gr | 60% | 18,681 psi | 42% | 1234 fps | 96.6% |
| ADI APS 350² | <<locked>> | 60% | 30,487 psi | 68% | 1171 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,559 psi | 66% | 1191 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,385 psi | 65% | 1224 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,082 psi | 71% | 1306 fps | 100% |
| Alliant 2400*² | <<locked>> | 72% | 26,150 psi | 58% | 1480 fps | 85.8% |
| Alliant BE-86² | <<locked>> | 60% | 27,992 psi | 62% | 1280 fps | 100% |
| Alliant BLUE DOT*² | 11.1 gr | 60% | 17,651 psi | 39% | 1240 fps | 85.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 34,287 psi | 76% | 1457 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 29,791 psi | 66% | 1276 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,189 psi | 45% | 1217 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 27,601 psi | 61% | 1470 fps | 99.5% |
| Alliant RED DOT² | <<locked>> | 60% | 28,863 psi | 64% | 1234 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 27,949 psi | 62% | 1365 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 29,225 psi | 65% | 1260 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 19,696 psi | 44% | 1115 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 32,387 psi | 72% | 1319 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 31,125 psi | 69% | 1191 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 84% | 25,759 psi | 57% | 1552 fps | 86% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,008 psi | 22% | 830 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 31,749 psi | 71% | 1358 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 29,544 psi | 66% | 1532 fps | 95.7% |
| Lovex D037.2*² | <<locked>> | 60% | 23,206 psi | 52% | 1394 fps | 86.6% |
| Lovex S020² | <<locked>> | 60% | 32,750 psi | 73% | 1394 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 25,179 psi | 56% | 1240 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,543 psi | 63% | 1289 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,253 psi | 63% | 1266 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,211 psi | 67% | 1273 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 32,793 psi | 73% | 1260 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 72% | 25,077 psi | 56% | 1470 fps | 86.3% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 36,289 psi | 81% | 1378 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 9,514 psi | 21% | 840 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 26,542 psi | 59% | 1335 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 25,222 psi | 56% | 1427 fps | 95.4% |
| Rottweil P 806² | <<locked>> | 60% | 22,655 psi | 50% | 1381 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 23,206 psi | 52% | 1394 fps | 86.6% |
| Shooters World Major Pistol² | <<locked>> | 60% | 29,544 psi | 66% | 1532 fps | 95.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,425 psi | 57% | 1283 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 30,545 psi | 68% | 1316 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 29,849 psi | 66% | 1325 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 32,706 psi | 73% | 1234 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 92% | 21,263 psi | 47% | 1371 fps | 85.4% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,437 psi | 50% | 1289 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 29,834 psi | 66% | 1325 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 31,546 psi | 70% | 1539 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 31,633 psi | 70% | 1417 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,500 psi | 63% | 1345 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 26,310 psi | 59% | 1378 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 18,188 psi | 40% | 1250 fps | 91.3% |
| Vihtavuori N105*² | 10.6 gr | 60% | 15,214 psi | 34% | 1217 fps | 92.5% |
| Vihtavuori N110* | <<locked>> | 92% | 25,657 psi | 57% | 1503 fps | 86.2% |
| Vihtavuori N320² | <<locked>> | 60% | 32,387 psi | 72% | 1306 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 16,766 psi | 37% | 984 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 32,677 psi | 73% | 1368 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,427 psi | 63% | 1345 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 22,800 psi | 51% | 1309 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 26,789 psi | 60% | 1289 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 Maximum loaded with the .358 | 148gr | Rim Rock SWC Top Shelf. Hodgdon LilGun delivers the highest muzzle velocity at 1,808 fps; across all powders the maximum-charge window runs from 1,093 fps to 1,808 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 of the 64 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, 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. Alliant BLUE DOT, Vihtavuori N105, ADI AP 100 rank at the top here: for .357 Maximum with the .358 | 148gr | Rim Rock SWC Top Shelf they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Hodgdon LilGun burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, 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.