Load Specifications
Load data in caliber .357 Auto Mag. with .355 | 95gr | CamPro RN bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, 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: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 64% | 31,125 psi | 84% | 1804 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 29,515 psi | 80% | 1893 fps | 88.1% |
| Accurate Solo 1000² | <<locked>> | 64% | 30,197 psi | 82% | 1667 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 30,095 psi | 81% | 1732 fps | 100% |
| ADI AP 100 | <<locked>> | 84% | 31,560 psi | 85% | 1900 fps | 97.4% |
| ADI APS 350² | <<locked>> | 64% | 31,314 psi | 85% | 1558 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 33,214 psi | 90% | 1627 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 32,793 psi | 89% | 1673 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 32,808 psi | 89% | 1729 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 31,618 psi | 85% | 1736 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 84% | 31,038 psi | 84% | 1919 fps | 87.9% |
| Alliant Green Dot² | <<locked>> | 68% | 33,388 psi | 90% | 1745 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 33,083 psi | 89% | 1864 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 30,937 psi | 84% | 1932 fps | 96.4% |
| Alliant RED DOT² | <<locked>> | 68% | 32,039 psi | 87% | 1683 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 30,966 psi | 84% | 1837 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 32,909 psi | 89% | 1716 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 32,256 psi | 87% | 1709 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 33,286 psi | 90% | 1729 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 33,315 psi | 90% | 1627 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 19,174 psi | 52% | 1388 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 32,155 psi | 87% | 1785 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 29,515 psi | 80% | 1893 fps | 88.1% |
| Lovex S020² | <<locked>> | 64% | 32,808 psi | 89% | 1824 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 31,299 psi | 85% | 1749 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 31,633 psi | 86% | 1749 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 31,676 psi | 86% | 1729 fps | 100% |
| Maxam CSB 4² | <<locked>> | 64% | 30,211 psi | 82% | 1673 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 33,127 psi | 90% | 1667 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 17,854 psi | 48% | 1394 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 33,011 psi | 89% | 1860 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 32,198 psi | 87% | 1952 fps | 92.3% |
| Rottweil P 806² | <<locked>> | 76% | 33,127 psi | 90% | 1972 fps | 99.9% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 29,515 psi | 80% | 1893 fps | 88.1% |
| SNPE Vectan A0² | <<locked>> | 72% | 31,473 psi | 85% | 1798 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 64% | 31,082 psi | 84% | 1726 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 30,269 psi | 82% | 1736 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 31,241 psi | 84% | 1850 fps | 99.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 33,417 psi | 90% | 1798 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 31,096 psi | 84% | 1939 fps | 97.8% |
| Somchem MP200² | <<locked>> | 64% | 31,734 psi | 86% | 1841 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 31,618 psi | 85% | 1811 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 29,921 psi | 81% | 1847 fps | 99.9% |
| Vihtavuori 3N38* | <<locked>> | 84% | 32,242 psi | 87% | 1939 fps | 93.2% |
| Vihtavuori N105 | <<locked>> | 88% | 32,285 psi | 87% | 1998 fps | 96.6% |
| Vihtavuori N320² | <<locked>> | 64% | 32,576 psi | 88% | 1719 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 32,938 psi | 89% | 1627 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 32,677 psi | 88% | 1791 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 31,502 psi | 85% | 1811 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 32,416 psi | 88% | 1893 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 33,069 psi | 89% | 1798 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 27,122 psi | 73% | 1722 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 25,440 psi | 69% | 1791 fps | 85.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 27,325 psi | 74% | 1611 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 24,265 psi | 66% | 1611 fps | 100% |
| ADI AP 100*² | <<locked>> | 60% | 16,317 psi | 44% | 1463 fps | 86.6% |
| ADI APS 350² | <<locked>> | 60% | 28,732 psi | 78% | 1509 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 27,369 psi | 74% | 1522 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 26,876 psi | 73% | 1562 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 29,327 psi | 79% | 1667 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 25,034 psi | 68% | 1611 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 80% | 27,557 psi | 75% | 1834 fps | 85.6% |
| Alliant Green Dot² | <<locked>> | 60% | 27,122 psi | 73% | 1624 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 17,970 psi | 49% | 1496 fps | 99.4% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 23,772 psi | 64% | 1742 fps | 92.4% |
| Alliant RED DOT² | <<locked>> | 60% | 26,034 psi | 70% | 1568 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 24,613 psi | 67% | 1693 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 26,672 psi | 72% | 1604 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 17,448 psi | 47% | 1398 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 29,428 psi | 80% | 1663 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 23,192 psi | 63% | 1434 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,731 psi | 24% | 1033 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 28,500 psi | 77% | 1716 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 25,440 psi | 69% | 1791 fps | 85.2% |
| Lovex S020² | <<locked>> | 60% | 28,906 psi | 78% | 1749 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 22,800 psi | 62% | 1572 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 24,845 psi | 67% | 1617 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 25,686 psi | 69% | 1611 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 27,354 psi | 74% | 1621 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 29,979 psi | 81% | 1611 fps | 100% |
| ReloadSwiss RS 14² | 6 gr | 60% | 8,427 psi | 23% | 1040 fps | 99.7% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 23,061 psi | 62% | 1654 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 24,976 psi | 68% | 1768 fps | 87.5% |
| Rottweil P 806*² | <<locked>> | 60% | 18,681 psi | 51% | 1601 fps | 93.8% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 25,440 psi | 69% | 1791 fps | 85.2% |
| SNPE Vectan A0² | <<locked>> | 60% | 22,640 psi | 61% | 1601 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 27,731 psi | 75% | 1660 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 26,919 psi | 73% | 1670 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 19,595 psi | 53% | 1555 fps | 95.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 26,643 psi | 72% | 1670 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 27,093 psi | 73% | 1844 fps | 96.1% |
| Somchem MP200² | <<locked>> | 60% | 28,297 psi | 77% | 1772 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 25,266 psi | 68% | 1677 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 23,134 psi | 63% | 1680 fps | 98.3% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 22,698 psi | 61% | 1696 fps | 86.7% |
| Vihtavuori N105*² | 16.3 gr | 72% | 19,160 psi | 52% | 1647 fps | 87.3% |
| Vihtavuori N320² | <<locked>> | 60% | 29,472 psi | 80% | 1667 fps | 100% |
| Vihtavuori N32C Tin Star² | 7.9 gr | 60% | 14,939 psi | 40% | 1250 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 28,776 psi | 78% | 1722 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 24,961 psi | 67% | 1673 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 19,856 psi | 54% | 1581 fps | 96.9% |
| Winchester AutoComp ² | <<locked>> | 60% | 23,728 psi | 64% | 1611 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 51 powders for .357 Auto Mag. loaded with the .355 | 95gr | CamPro RN. Vihtavuori N105 delivers the highest muzzle velocity at 1,998 fps; across all powders the maximum-charge window runs from 1,388 fps to 1,998 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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. Vihtavuori N105, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .357 Auto Mag. with the .355 | 95gr | CamPro RN 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. 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.