Load Specifications
Load data in caliber .357 Maximum with .356 | 160gr | Rim Rock 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% | 36,216 psi | 81% | 1594 fps | 89.9% |
| Accurate No. 2² | <<locked>> | 68% | 40,611 psi | 90% | 1444 fps | 100% |
| Accurate No. 7² | <<locked>> | 64% | 36,143 psi | 80% | 1581 fps | 98.7% |
| Accurate No. 9² | <<locked>> | 72% | 36,738 psi | 82% | 1591 fps | 95.4% |
| Accurate Solo 1000² | <<locked>> | 68% | 37,188 psi | 83% | 1299 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 38,406 psi | 85% | 1365 fps | 100% |
| Accurate TCM² | <<locked>> | 72% | 36,535 psi | 81% | 1581 fps | 96.3% |
| ADI AP 100 | <<locked>> | 84% | 37,637 psi | 84% | 1522 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 40,205 psi | 89% | 1237 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 39,363 psi | 88% | 1260 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 39,769 psi | 88% | 1299 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 40,654 psi | 90% | 1352 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 39,856 psi | 89% | 1663 fps | 94.3% |
| Alliant BE-86² | <<locked>> | 72% | 39,842 psi | 89% | 1368 fps | 100% |
| Alliant BLUE DOT | <<locked>> | 84% | 37,130 psi | 83% | 1588 fps | 98.3% |
| Alliant BULLSEYE² | <<locked>> | 64% | 39,682 psi | 88% | 1460 fps | 100% |
| Alliant Green Dot² | <<locked>> | 68% | 37,246 psi | 83% | 1316 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 38,406 psi | 85% | 1444 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 36,869 psi | 82% | 1562 fps | 100% |
| Alliant Power Pro 300-MP* | <<locked>> | 88% | 36,651 psi | 82% | 1644 fps | 87.6% |
| Alliant RED DOT² | <<locked>> | 72% | 38,595 psi | 86% | 1302 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 39,784 psi | 88% | 1463 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 37,449 psi | 83% | 1302 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 40,683 psi | 90% | 1345 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 37,898 psi | 84% | 1325 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 39,276 psi | 87% | 1257 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 92% | 36,738 psi | 82% | 1696 fps | 94.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 21,944 psi | 49% | 1050 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 36,680 psi | 82% | 1358 fps | 100% |
| Lovex D037.1² | <<locked>> | 64% | 36,143 psi | 80% | 1581 fps | 98.7% |
| Lovex D037.2² | <<locked>> | 72% | 37,869 psi | 84% | 1608 fps | 95.8% |
| Lovex S020² | <<locked>> | 64% | 38,232 psi | 85% | 1398 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 39,755 psi | 88% | 1375 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 40,248 psi | 90% | 1375 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 39,697 psi | 88% | 1352 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 37,811 psi | 84% | 1312 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 37,014 psi | 82% | 1253 fps | 100% |
| Ramshot Enforcer | <<locked>> | 84% | 39,943 psi | 89% | 1670 fps | 95.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,914 psi | 47% | 1070 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 39,073 psi | 87% | 1437 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 39,233 psi | 87% | 1608 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 72% | 36,187 psi | 80% | 1535 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 72% | 37,869 psi | 84% | 1608 fps | 95.8% |
| Shooters World Major Pistol² | <<locked>> | 64% | 36,143 psi | 80% | 1581 fps | 98.7% |
| SNPE Vectan A0² | <<locked>> | 76% | 40,161 psi | 89% | 1424 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 39,450 psi | 88% | 1365 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 38,885 psi | 86% | 1378 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 40,089 psi | 89% | 1270 fps | 100% |
| SNPE Vectan BA6 1/2*ᴾ | <<locked>> | 100% | 27,992 psi | 62% | 1467 fps | 92.3% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 40,263 psi | 90% | 1499 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 37,811 psi | 84% | 1368 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 38,218 psi | 85% | 1568 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 36,550 psi | 81% | 1417 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 40,306 psi | 90% | 1437 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 39,726 psi | 88% | 1506 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 39,291 psi | 87% | 1588 fps | 100% |
| Vihtavuori N105 | <<locked>> | 84% | 36,361 psi | 81% | 1578 fps | 100% |
| Vihtavuori N110*ᴾ | <<locked>> | 100% | 35,389 psi | 79% | 1617 fps | 93.2% |
| Vihtavuori N320² | <<locked>> | 64% | 37,623 psi | 84% | 1309 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 39,189 psi | 87% | 1250 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 38,116 psi | 85% | 1371 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 37,173 psi | 83% | 1401 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 38,725 psi | 86% | 1486 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 38,450 psi | 86% | 1385 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*² | <<locked>> | 76% | 27,746 psi | 62% | 1450 fps | 85.1% |
| Accurate No. 2² | <<locked>> | 60% | 31,517 psi | 70% | 1332 fps | 100% |
| Accurate No. 7² | <<locked>> | 60% | 31,430 psi | 70% | 1503 fps | 97.4% |
| Accurate No. 9*² | <<locked>> | 60% | 23,960 psi | 53% | 1358 fps | 88.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,385 psi | 68% | 1211 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,775 psi | 62% | 1230 fps | 100% |
| Accurate TCM*² | <<locked>> | 60% | 24,091 psi | 54% | 1355 fps | 90.1% |
| ADI AP 100² | <<locked>> | 60% | 19,508 psi | 43% | 1204 fps | 97.9% |
| ADI APS 350² | <<locked>> | 60% | 30,821 psi | 69% | 1122 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,979 psi | 67% | 1142 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,950 psi | 67% | 1175 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,866 psi | 73% | 1257 fps | 100% |
| Alliant 2400*² | <<locked>> | 68% | 23,917 psi | 53% | 1375 fps | 85.5% |
| Alliant BE-86² | <<locked>> | 60% | 28,892 psi | 64% | 1234 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 18,246 psi | 41% | 1211 fps | 88% |
| Alliant BULLSEYE² | <<locked>> | 60% | 35,404 psi | 79% | 1407 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,516 psi | 68% | 1227 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,958 psi | 47% | 1178 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 28,877 psi | 64% | 1434 fps | 99.9% |
| Alliant Power Pro 300-MP* | <<locked>> | 84% | 32,111 psi | 71% | 1568 fps | 85.1% |
| Alliant RED DOT² | <<locked>> | 60% | 29,443 psi | 65% | 1184 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 28,964 psi | 64% | 1319 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,052 psi | 67% | 1211 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 7.9 gr | 60% | 20,334 psi | 45% | 1076 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 33,533 psi | 75% | 1276 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,266 psi | 56% | 1073 fps | 100% |
| Hodgdon LilGun* | <<locked>> | 80% | 23,801 psi | 53% | 1453 fps | 86.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,196 psi | 23% | 794 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,735 psi | 73% | 1309 fps | 100% |
| Lovex D037.1² | <<locked>> | 60% | 31,430 psi | 70% | 1503 fps | 97.4% |
| Lovex D037.2*² | <<locked>> | 60% | 24,308 psi | 54% | 1365 fps | 88.9% |
| Lovex S020² | <<locked>> | 60% | 33,286 psi | 74% | 1339 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,513 psi | 59% | 1204 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 29,501 psi | 66% | 1240 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,022 psi | 65% | 1217 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,966 psi | 69% | 1224 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,431 psi | 74% | 1211 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 23,134 psi | 51% | 1371 fps | 86.3% |
| ReloadSwiss RS 14² | 4.6 gr | 60% | 9,718 psi | 22% | 807 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,659 psi | 62% | 1289 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 26,121 psi | 58% | 1388 fps | 96.8% |
| Rottweil P 806² | <<locked>> | 60% | 23,801 psi | 53% | 1345 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 60% | 24,308 psi | 54% | 1365 fps | 88.9% |
| Shooters World Major Pistol² | <<locked>> | 60% | 31,430 psi | 70% | 1503 fps | 97.4% |
| SNPE Vectan A0² | <<locked>> | 60% | 26,281 psi | 58% | 1240 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 31,488 psi | 70% | 1266 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,835 psi | 69% | 1280 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,214 psi | 74% | 1184 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 88% | 20,262 psi | 45% | 1296 fps | 86% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 23,409 psi | 52% | 1253 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 30,777 psi | 68% | 1280 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 33,330 psi | 74% | 1499 fps | 100% |
| Somchem MP200² | <<locked>> | 60% | 32,822 psi | 73% | 1371 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,457 psi | 66% | 1296 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,514 psi | 61% | 1339 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 19,160 psi | 43% | 1227 fps | 93.5% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,288 psi | 36% | 1198 fps | 94.9% |
| Vihtavuori N110* | <<locked>> | 88% | 24,497 psi | 54% | 1421 fps | 86.9% |
| Vihtavuori N320² | <<locked>> | 60% | 33,272 psi | 74% | 1257 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.1 gr | 60% | 17,172 psi | 38% | 945 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,866 psi | 75% | 1319 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 29,443 psi | 65% | 1299 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,844 psi | 53% | 1273 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 27,760 psi | 62% | 1247 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 .356 | 160gr | Rim Rock RN. Hodgdon LilGun delivers the highest muzzle velocity at 1,696 fps; across all powders the maximum-charge window runs from 1,050 fps to 1,696 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 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 47–90 %, 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 .356 | 160gr | Rim Rock 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. ADI APS 350, Baschieri & Pellagri 102 Pistol, Hodgdon Clays 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.