Load Specifications
Load data in caliber .357 Maximum with .357 | 147gr | X-TREME RN bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star and ReloadSwiss RS 14.
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>> | 84% | 38,247 psi | 85% | 1696 fps | 89.8% |
| Accurate No. 2² | <<locked>> | 64% | 36,956 psi | 82% | 1476 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 38,261 psi | 85% | 1683 fps | 98.6% |
| Accurate No. 9² | <<locked>> | 72% | 38,261 psi | 85% | 1686 fps | 95.1% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,782 psi | 84% | 1378 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 39,494 psi | 88% | 1450 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 38,145 psi | 85% | 1677 fps | 96.1% |
| ADI AP 100 | <<locked>> | 84% | 38,856 psi | 86% | 1617 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 37,391 psi | 83% | 1273 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,769 psi | 88% | 1335 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 40,669 psi | 90% | 1378 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 38,000 psi | 85% | 1391 fps | 100% |
| Alliant 2400* | <<locked>> | 80% | 37,130 psi | 83% | 1693 fps | 92.3% |
| Alliant BE-86² | <<locked>> | 68% | 37,492 psi | 83% | 1411 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 38,493 psi | 86% | 1680 fps | 98% |
| Alliant BULLSEYE² | <<locked>> | 64% | 40,640 psi | 90% | 1552 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 38,174 psi | 85% | 1394 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 39,711 psi | 88% | 1532 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 37,913 psi | 84% | 1654 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 39,160 psi | 87% | 1749 fps | 87.6% |
| Alliant RED DOT² | <<locked>> | 72% | 39,740 psi | 88% | 1388 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 37,101 psi | 83% | 1503 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 38,101 psi | 85% | 1378 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 38,145 psi | 85% | 1388 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 38,754 psi | 86% | 1401 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,653 psi | 88% | 1329 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 38,870 psi | 86% | 1804 fps | 94% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,424 psi | 52% | 1125 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 38,334 psi | 85% | 1447 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 38,261 psi | 85% | 1683 fps | 98.6% |
| Lovex D037.2² | <<locked>> | 72% | 39,262 psi | 87% | 1699 fps | 95.4% |
| Lovex S020² | <<locked>> | 64% | 39,479 psi | 88% | 1486 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 40,654 psi | 90% | 1460 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 37,840 psi | 84% | 1414 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 40,190 psi | 89% | 1430 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 38,508 psi | 86% | 1391 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 38,014 psi | 85% | 1335 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 80% | 36,985 psi | 82% | 1696 fps | 93.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 22,611 psi | 50% | 1148 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 40,509 psi | 90% | 1529 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 40,147 psi | 89% | 1696 fps | 99.7% |
| Rottweil P 806² | <<locked>> | 72% | 38,914 psi | 87% | 1640 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 39,262 psi | 87% | 1699 fps | 95.4% |
| Shooters World Major Pistol² | <<locked>> | 64% | 38,261 psi | 85% | 1683 fps | 98.6% |
| SNPE Vectan A0² | <<locked>> | 72% | 37,536 psi | 83% | 1467 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,958 psi | 89% | 1444 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 39,436 psi | 88% | 1460 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,422 psi | 90% | 1342 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 29,646 psi | 66% | 1558 fps | 92.1% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 37,449 psi | 83% | 1539 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 38,914 psi | 87% | 1453 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 39,653 psi | 88% | 1663 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 38,130 psi | 85% | 1512 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 37,318 psi | 83% | 1476 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 36,492 psi | 81% | 1542 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 80% | 36,941 psi | 82% | 1631 fps | 99.6% |
| Vihtavuori N105 | <<locked>> | 84% | 38,203 psi | 85% | 1680 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 37,115 psi | 83% | 1713 fps | 93% |
| Vihtavuori N320² | <<locked>> | 64% | 38,580 psi | 86% | 1388 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 40,321 psi | 90% | 1329 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,711 psi | 86% | 1447 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 38,189 psi | 85% | 1486 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 39,697 psi | 88% | 1575 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 39,160 psi | 87% | 1463 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>> | 80% | 33,504 psi | 75% | 1617 fps | 87.5% |
| Accurate No. 2² | <<locked>> | 60% | 32,169 psi | 72% | 1411 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 33,228 psi | 74% | 1601 fps | 97.3% |
| Accurate No. 9*² | <<locked>> | 60% | 25,411 psi | 57% | 1444 fps | 88.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 31,430 psi | 70% | 1289 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 28,921 psi | 64% | 1309 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 25,556 psi | 57% | 1444 fps | 90% |
| ADI AP 100² | <<locked>> | 60% | 20,508 psi | 46% | 1280 fps | 97.8% |
| ADI APS 350² | <<locked>> | 60% | 31,415 psi | 70% | 1194 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,371 psi | 68% | 1211 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 31,386 psi | 70% | 1257 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 34,113 psi | 76% | 1339 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 25,875 psi | 58% | 1473 fps | 85.8% |
| Alliant BE-86² | <<locked>> | 60% | 29,820 psi | 66% | 1309 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 19,957 psi | 44% | 1302 fps | 88.6% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,969 psi | 80% | 1486 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 31,256 psi | 70% | 1302 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 22,307 psi | 50% | 1257 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 29,950 psi | 67% | 1516 fps | 99.9% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 34,403 psi | 77% | 1670 fps | 85.2% |
| Alliant RED DOT² | <<locked>> | 60% | 30,443 psi | 68% | 1260 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 30,182 psi | 67% | 1401 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 31,125 psi | 69% | 1289 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.4 gr | 60% | 21,727 psi | 48% | 1148 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 34,708 psi | 77% | 1355 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,947 psi | 58% | 1138 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 25,730 psi | 57% | 1552 fps | 86.4% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 11,632 psi | 26% | 860 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 33,968 psi | 76% | 1391 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 33,228 psi | 74% | 1601 fps | 97.3% |
| Lovex D037.2*² | <<locked>> | 60% | 26,121 psi | 58% | 1463 fps | 89.1% |
| Lovex S020² | <<locked>> | 60% | 34,853 psi | 78% | 1427 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 27,195 psi | 60% | 1276 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 31,082 psi | 69% | 1325 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 30,182 psi | 67% | 1299 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 31,502 psi | 70% | 1296 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,968 psi | 76% | 1283 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 24,947 psi | 55% | 1467 fps | 86.5% |
| ReloadSwiss RS 14² | 4.9 gr | 60% | 11,240 psi | 25% | 873 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 29,196 psi | 65% | 1375 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 27,862 psi | 62% | 1486 fps | 96.9% |
| Rottweil P 806² | <<locked>> | 60% | 26,266 psi | 58% | 1444 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 26,121 psi | 58% | 1463 fps | 89.1% |
| Shooters World Major Pistol² | <<locked>> | 60% | 33,228 psi | 74% | 1601 fps | 97.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 27,122 psi | 60% | 1316 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 32,489 psi | 72% | 1345 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 31,894 psi | 71% | 1362 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,982 psi | 76% | 1260 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 21,683 psi | 48% | 1381 fps | 86.1% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 24,221 psi | 54% | 1325 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 31,705 psi | 71% | 1358 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 35,041 psi | 78% | 1598 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 34,026 psi | 76% | 1457 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 30,371 psi | 68% | 1375 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 28,689 psi | 64% | 1421 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 20,595 psi | 46% | 1309 fps | 93.6% |
| Vihtavuori N105² | <<locked>> | 60% | 17,999 psi | 40% | 1289 fps | 95.5% |
| Vihtavuori N110* | <<locked>> | 88% | 26,339 psi | 59% | 1516 fps | 87% |
| Vihtavuori N320² | <<locked>> | 60% | 34,490 psi | 77% | 1339 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.5 gr | 60% | 18,695 psi | 42% | 1014 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 34,795 psi | 77% | 1398 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 30,400 psi | 68% | 1378 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 25,251 psi | 56% | 1355 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 28,689 psi | 64% | 1319 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 .357 | 147gr | X-TREME RN. Hodgdon LilGun delivers the highest muzzle velocity at 1,804 fps; across all powders the maximum-charge window runs from 1,125 fps to 1,804 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 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 50–90 %, 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. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Maximum with the .357 | 147gr | X-TREME RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4100, Alliant 2400, Alliant Power Pro 300-MP burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.