Load Specifications
Load data in caliber .357 Mag. with .355 | 75gr | CutEdge HGHP bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Alliant UNIQUE and ReloadSwiss RS 20.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 35,795 psi | 82% | 1936 fps | 99.6% |
| Accurate No. 5² | <<locked>> | 68% | 38,450 psi | 88% | 2070 fps | 95.4% |
| Accurate Solo 1000 | <<locked>> | 84% | 37,594 psi | 86% | 1860 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 36,260 psi | 83% | 1909 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 31,981 psi | 74% | 1923 fps | 90.6% |
| ADI AP 70N² | <<locked>> | 76% | 39,175 psi | 90% | 1982 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 37,434 psi | 86% | 1706 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 38,986 psi | 90% | 1775 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 37,202 psi | 86% | 1811 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 36,680 psi | 84% | 1867 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 38,827 psi | 89% | 1926 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 38,537 psi | 89% | 2044 fps | 100% |
| Alliant Green Dot | <<locked>> | 84% | 36,898 psi | 85% | 1873 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 33,402 psi | 77% | 1932 fps | 100% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 36,361 psi | 84% | 2083 fps | 91.9% |
| Alliant RED DOT | <<locked>> | 88% | 38,537 psi | 89% | 1864 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 36,405 psi | 84% | 2008 fps | 100% |
| Alliant UNIQUE | <<locked>> | 88% | 35,824 psi | 82% | 1995 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 37,463 psi | 86% | 1857 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 33,446 psi | 77% | 1801 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 38,493 psi | 88% | 1877 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 36,782 psi | 85% | 1936 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 37,956 psi | 87% | 1732 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 38,812 psi | 89% | 1929 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 72% | 36,332 psi | 84% | 2001 fps | 96.4% |
| Hodgdon Longshot² | <<locked>> | 68% | 35,665 psi | 82% | 1991 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 14,547 psi | 33% | 1316 fps | 100% |
| Hodgdon Universal | <<locked>> | 84% | 39,175 psi | 90% | 1982 fps | 100% |
| Lovex D036² | <<locked>> | 68% | 38,392 psi | 88% | 2067 fps | 95.3% |
| Lovex S011² | <<locked>> | 72% | 37,043 psi | 85% | 1890 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 36,419 psi | 84% | 1952 fps | 100% |
| Maxam CSB 1 | <<locked>> | 92% | 36,695 psi | 84% | 1913 fps | 100% |
| Maxam CSB 2 | <<locked>> | 88% | 36,405 psi | 84% | 1919 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 38,435 psi | 88% | 1913 fps | 100% |
| Maxam CSB 4 | <<locked>> | 84% | 37,376 psi | 86% | 1870 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 38,043 psi | 87% | 1811 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 35,549 psi | 82% | 1978 fps | 99.8% |
| Ramshot True Blue² | <<locked>> | 68% | 36,825 psi | 85% | 2005 fps | 97.9% |
| Ramshot Zip² | <<locked>> | 64% | 38,232 psi | 88% | 1929 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 76% | 36,448 psi | 84% | 1896 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,300 psi | 31% | 1306 fps | 99.7% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 37,753 psi | 87% | 2024 fps | 100% |
| Rottweil P 801² | <<locked>> | 72% | 37,507 psi | 86% | 1864 fps | 100% |
| Rottweil P 806 | <<locked>> | 96% | 36,405 psi | 84% | 2093 fps | 97.1% |
| Shooters World Auto Pistol² | <<locked>> | 68% | 38,392 psi | 88% | 2067 fps | 95.3% |
| SNPE Vectan A0 | <<locked>> | 92% | 37,173 psi | 85% | 1952 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 80% | 35,549 psi | 82% | 1870 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 38,290 psi | 88% | 1936 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 36,738 psi | 84% | 1739 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 96% | 36,419 psi | 84% | 1982 fps | 97.4% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 36,941 psi | 85% | 1932 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 37,072 psi | 85% | 2110 fps | 94.2% |
| Somchem MP200 | <<locked>> | 80% | 35,563 psi | 82% | 1969 fps | 99.9% |
| Somchem MS200 | <<locked>> | 88% | 38,218 psi | 88% | 1991 fps | 100% |
| Somchem S221*² | <<locked>> | 76% | 36,898 psi | 85% | 2034 fps | 89.5% |
| Vihtavuori 3N37 | <<locked>> | 88% | 35,578 psi | 82% | 2005 fps | 97.9% |
| Vihtavuori N310² | <<locked>> | 68% | 37,521 psi | 86% | 1762 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 36,100 psi | 83% | 1860 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 31,212 psi | 72% | 1667 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 37,985 psi | 87% | 1965 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 38,087 psi | 88% | 1991 fps | 100% |
| Vihtavuori N350 | <<locked>> | 92% | 35,868 psi | 82% | 2005 fps | 98.2% |
| Winchester 231² | <<locked>> | 72% | 38,972 psi | 90% | 1939 fps | 100% |
| Winchester AutoComp | <<locked>> | 92% | 39,189 psi | 90% | 1965 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 19,624 psi | 45% | 1555 fps | 93.4% |
| Accurate No. 5*² | <<locked>> | 60% | 29,225 psi | 67% | 1870 fps | 91.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 21,176 psi | 49% | 1532 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 17,448 psi | 40% | 1486 fps | 98.9% |
| ADI AP 100* | <<locked>> | 88% | 23,815 psi | 55% | 1722 fps | 85.1% |
| ADI AP 70N² | <<locked>> | 60% | 25,425 psi | 58% | 1716 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 23,859 psi | 55% | 1463 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 22,437 psi | 52% | 1473 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 21,074 psi | 48% | 1496 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 22,350 psi | 51% | 1581 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 18,043 psi | 41% | 1496 fps | 99.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 22,553 psi | 52% | 1683 fps | 98.1% |
| Alliant Green Dot² | <<locked>> | 60% | 20,537 psi | 47% | 1535 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 13,285 psi | 31% | 1348 fps | 89.8% |
| Alliant POWER PISTOL*² | <<locked>> | 76% | 26,658 psi | 61% | 1847 fps | 86.1% |
| Alliant RED DOT² | <<locked>> | 60% | 20,276 psi | 47% | 1499 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 25,469 psi | 59% | 1765 fps | 98.6% |
| Alliant UNIQUE*² | 7.7 gr | 60% | 17,796 psi | 41% | 1535 fps | 94.5% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 19,783 psi | 45% | 1506 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 12,705 psi | 29% | 1302 fps | 99.8% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 21,103 psi | 49% | 1558 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 32,474 psi | 75% | 1864 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 24,134 psi | 55% | 1486 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 34,693 psi | 80% | 1864 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 24,526 psi | 56% | 1736 fps | 90.6% |
| Hodgdon Longshot*² | <<locked>> | 60% | 27,122 psi | 62% | 1804 fps | 94.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,121 psi | 16% | 971 fps | 97.2% |
| Hodgdon Universal² | <<locked>> | 60% | 20,929 psi | 48% | 1601 fps | 100% |
| Lovex D036*² | <<locked>> | 60% | 29,182 psi | 67% | 1873 fps | 91.1% |
| Lovex S011² | <<locked>> | 60% | 26,310 psi | 60% | 1690 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 20,320 psi | 47% | 1598 fps | 98.1% |
| Maxam CSB 1² | <<locked>> | 60% | 16,433 psi | 38% | 1444 fps | 98.5% |
| Maxam CSB 2² | <<locked>> | 60% | 17,318 psi | 40% | 1503 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 19,305 psi | 44% | 1519 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 20,552 psi | 47% | 1535 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 23,540 psi | 54% | 1549 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 24,265 psi | 56% | 1726 fps | 96.8% |
| Ramshot True Blue*² | <<locked>> | 60% | 27,992 psi | 64% | 1821 fps | 94.7% |
| Ramshot Zip² | <<locked>> | 60% | 33,475 psi | 77% | 1850 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 23,482 psi | 54% | 1650 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 6,875 psi | 16% | 965 fps | 92.7% |
| ReloadSwiss RS 20² | 8 gr | 60% | 15,722 psi | 36% | 1490 fps | 95% |
| Rottweil P 801² | <<locked>> | 60% | 26,614 psi | 61% | 1673 fps | 100% |
| Rottweil P 806*² | 15.1 gr | 76% | 19,058 psi | 44% | 1670 fps | 86.2% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 29,182 psi | 67% | 1873 fps | 91.1% |
| SNPE Vectan A0*² | <<locked>> | 60% | 16,520 psi | 38% | 1447 fps | 93.3% |
| SNPE Vectan A1² | <<locked>> | 60% | 21,060 psi | 48% | 1568 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 20,247 psi | 47% | 1555 fps | 99% |
| SNPE Vectan BA10² | <<locked>> | 60% | 25,367 psi | 58% | 1539 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 68% | 17,709 psi | 41% | 1509 fps | 85.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 19,682 psi | 45% | 1552 fps | 99.5% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 25,512 psi | 59% | 1841 fps | 87.6% |
| Somchem MP200² | <<locked>> | 60% | 20,436 psi | 47% | 1608 fps | 95.3% |
| Somchem MS200² | <<locked>> | 60% | 18,710 psi | 43% | 1539 fps | 96.3% |
| Somchem S221*² | <<locked>> | 72% | 32,547 psi | 75% | 1946 fps | 87.2% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 17,753 psi | 41% | 1549 fps | 87.3% |
| Vihtavuori N310² | <<locked>> | 60% | 30,342 psi | 70% | 1644 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 21,060 psi | 48% | 1565 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,705 psi | 29% | 1240 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 19,131 psi | 44% | 1572 fps | 99.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 17,535 psi | 40% | 1509 fps | 94.8% |
| Vihtavuori N350*² | <<locked>> | 64% | 15,983 psi | 37% | 1483 fps | 85.6% |
| Winchester 231² | <<locked>> | 60% | 27,383 psi | 63% | 1732 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 17,390 psi | 40% | 1486 fps | 98.2% |
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 Mag. loaded with the .355 | 75gr | CutEdge HGHP. SNPE Vectan SP 2 delivers the highest muzzle velocity at 2,110 fps; across all powders the maximum-charge window runs from 1,306 fps to 2,110 fps. ADI AP 100 gives the best case fill at 100 %, and 45 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 31–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant Herco, Baschieri & Pellagri 102 Pistol 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. Rottweil P 806, Alliant UNIQUE, ReloadSwiss RS 20 rank at the top here: for .357 Mag. with the .355 | 75gr | CutEdge HGHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100, Alliant POWER PISTOL, SNPE Vectan SP 2 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.