Load Specifications
Load data in caliber .357 Maximum with .357 | 77gr | Inceptor ARX Prefered Defense bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori N350 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 7.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 36,666 psi | 82% | 2087 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 39,001 psi | 87% | 2238 fps | 98.6% |
| Accurate No. 7* | <<locked>> | 80% | 39,697 psi | 88% | 2287 fps | 89.9% |
| Accurate Solo 1000 | <<locked>> | 80% | 38,667 psi | 86% | 1988 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 37,507 psi | 83% | 2051 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 37,420 psi | 83% | 2198 fps | 97.1% |
| ADI AP 70N² | <<locked>> | 72% | 40,335 psi | 90% | 2116 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 39,929 psi | 89% | 1850 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 38,493 psi | 86% | 1873 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 37,463 psi | 83% | 1923 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 37,362 psi | 83% | 1988 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 39,885 psi | 89% | 2054 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 36,550 psi | 81% | 2211 fps | 87.3% |
| Alliant BULLSEYE² | <<locked>> | 76% | 39,784 psi | 88% | 2198 fps | 100% |
| Alliant Green Dot | <<locked>> | 80% | 37,507 psi | 83% | 1995 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 38,754 psi | 86% | 2159 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 38,537 psi | 86% | 2293 fps | 96.8% |
| Alliant RED DOT | <<locked>> | 84% | 39,508 psi | 88% | 1991 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 40,654 psi | 90% | 2215 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 38,043 psi | 85% | 2169 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 38,072 psi | 85% | 1978 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 38,377 psi | 85% | 1982 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 39,363 psi | 88% | 1998 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 37,463 psi | 83% | 1854 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 37,478 psi | 83% | 2175 fps | 99.3% |
| Hodgdon Longshot² | <<locked>> | 64% | 36,158 psi | 80% | 2146 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,331 psi | 36% | 1453 fps | 100% |
| Hodgdon Universal | <<locked>> | 80% | 40,335 psi | 90% | 2116 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 39,044 psi | 87% | 2238 fps | 98.6% |
| Lovex D037.1* | <<locked>> | 80% | 39,697 psi | 88% | 2287 fps | 89.9% |
| Lovex S011² | <<locked>> | 68% | 37,188 psi | 83% | 2005 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 38,087 psi | 85% | 2103 fps | 100% |
| Maxam CSB 1 | <<locked>> | 88% | 38,232 psi | 85% | 2047 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 38,725 psi | 86% | 2060 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 39,189 psi | 87% | 2037 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 38,522 psi | 86% | 1998 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 38,305 psi | 85% | 1923 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 36,143 psi | 80% | 2119 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 37,086 psi | 82% | 2159 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 37,898 psi | 84% | 2024 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,287 psi | 34% | 1463 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 88% | 40,234 psi | 89% | 2185 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 88% | 40,625 psi | 90% | 2303 fps | 92.7% |
| Rottweil P 801² | <<locked>> | 68% | 37,942 psi | 84% | 1978 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 35,810 psi | 80% | 2231 fps | 99.5% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 39,044 psi | 87% | 2238 fps | 98.6% |
| Shooters World Major Pistol* | <<locked>> | 80% | 39,697 psi | 88% | 2287 fps | 89.9% |
| SNPE Vectan A0 | <<locked>> | 88% | 38,595 psi | 86% | 2103 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 80% | 40,059 psi | 89% | 2054 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 38,957 psi | 87% | 2067 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 39,827 psi | 89% | 1896 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 37,956 psi | 84% | 2159 fps | 99.7% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 37,855 psi | 84% | 2064 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 39,624 psi | 88% | 2320 fps | 98.4% |
| Somchem MP200² | <<locked>> | 76% | 36,608 psi | 81% | 2119 fps | 100% |
| Somchem MS200 | <<locked>> | 84% | 39,305 psi | 87% | 2139 fps | 100% |
| Somchem S221*² | <<locked>> | 72% | 38,218 psi | 85% | 2224 fps | 94.7% |
| Vihtavuori 3N37 | <<locked>> | 84% | 37,579 psi | 84% | 2185 fps | 99.9% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 38,508 psi | 86% | 2241 fps | 92.7% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 32,532 psi | 72% | 2198 fps | 94.2% |
| Vihtavuori N310² | <<locked>> | 64% | 39,755 psi | 88% | 1896 fps | 100% |
| Vihtavuori N320² | <<locked>> | 76% | 37,840 psi | 84% | 1991 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,211 psi | 67% | 1742 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 37,376 psi | 83% | 2067 fps | 100% |
| Vihtavuori N340 | <<locked>> | 84% | 39,726 psi | 88% | 2142 fps | 100% |
| Vihtavuori N350 | <<locked>> | 92% | 40,103 psi | 89% | 2221 fps | 100% |
| Winchester 231² | <<locked>> | 68% | 39,059 psi | 87% | 2057 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 37,043 psi | 82% | 2051 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 No. 2² | <<locked>> | 60% | 22,408 psi | 50% | 1765 fps | 98.4% |
| Accurate No. 5² | <<locked>> | 60% | 33,750 psi | 75% | 2129 fps | 97.2% |
| Accurate No. 7*² | <<locked>> | 76% | 34,476 psi | 77% | 2182 fps | 87.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,337 psi | 52% | 1686 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,218 psi | 45% | 1677 fps | 100% |
| ADI AP 100*² | <<locked>> | 72% | 18,536 psi | 41% | 1690 fps | 85.6% |
| ADI AP 70N² | <<locked>> | 60% | 28,921 psi | 64% | 1906 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,933 psi | 58% | 1601 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,613 psi | 55% | 1614 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,627 psi | 53% | 1650 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 24,976 psi | 56% | 1745 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 20,871 psi | 46% | 1680 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 32,808 psi | 73% | 2129 fps | 85.3% |
| Alliant BULLSEYE² | <<locked>> | 60% | 25,643 psi | 57% | 1896 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,206 psi | 52% | 1703 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,113 psi | 34% | 1542 fps | 96.1% |
| Alliant POWER PISTOL*² | <<locked>> | 64% | 21,857 psi | 49% | 1857 fps | 87.6% |
| Alliant RED DOT² | <<locked>> | 60% | 22,495 psi | 50% | 1650 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 29,167 psi | 65% | 1985 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,218 psi | 45% | 1739 fps | 99% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,568 psi | 50% | 1677 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,562 psi | 32% | 1460 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 24,424 psi | 54% | 1736 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,697 psi | 46% | 1519 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 28,384 psi | 63% | 1975 fps | 96.8% |
| Hodgdon Longshot² | <<locked>> | 60% | 31,183 psi | 69% | 2041 fps | 98.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,064 psi | 18% | 1102 fps | 99.9% |
| Hodgdon Universal² | <<locked>> | 60% | 24,120 psi | 54% | 1791 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 33,736 psi | 75% | 2129 fps | 97.2% |
| Lovex D037.1*² | <<locked>> | 76% | 34,476 psi | 77% | 2182 fps | 87.5% |
| Lovex S011² | <<locked>> | 60% | 29,356 psi | 65% | 1864 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 23,235 psi | 52% | 1795 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,014 psi | 42% | 1634 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,407 psi | 45% | 1690 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,393 psi | 48% | 1677 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,264 psi | 52% | 1699 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 26,078 psi | 58% | 1699 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 28,195 psi | 63% | 1955 fps | 99.9% |
| Ramshot True Blue² | <<locked>> | 60% | 32,547 psi | 72% | 2067 fps | 99.2% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 27,093 psi | 60% | 1827 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,687 psi | 17% | 1096 fps | 97.7% |
| ReloadSwiss RS 20² | 9.5 gr | 60% | 18,391 psi | 41% | 1699 fps | 99.5% |
| ReloadSwiss RS 24*² | <<locked>> | 76% | 28,645 psi | 64% | 2034 fps | 86.6% |
| Rottweil P 801² | <<locked>> | 60% | 30,429 psi | 68% | 1847 fps | 100% |
| Rottweil P 806*² | 14.1 gr | 60% | 13,808 psi | 31% | 1594 fps | 85.4% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 33,736 psi | 75% | 2129 fps | 97.2% |
| Shooters World Major Pistol*² | <<locked>> | 76% | 34,476 psi | 77% | 2182 fps | 87.5% |
| SNPE Vectan A0² | <<locked>> | 60% | 18,956 psi | 42% | 1647 fps | 98.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 23,453 psi | 52% | 1736 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,553 psi | 50% | 1732 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,224 psi | 61% | 1673 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 16,259 psi | 36% | 1578 fps | 89.5% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,118 psi | 49% | 1732 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 20,827 psi | 46% | 1841 fps | 89% |
| Somchem MP200² | <<locked>> | 60% | 23,119 psi | 51% | 1814 fps | 99.3% |
| Somchem MS200² | <<locked>> | 60% | 20,943 psi | 47% | 1729 fps | 99.6% |
| Somchem S221*² | <<locked>> | 60% | 25,643 psi | 57% | 1923 fps | 88% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 18,492 psi | 41% | 1699 fps | 92.9% |
| Vihtavuori 3N38* | <<locked>> | 88% | 28,007 psi | 62% | 2005 fps | 87.2% |
| Vihtavuori N105* | <<locked>> | 88% | 22,916 psi | 51% | 1939 fps | 87.6% |
| Vihtavuori N310² | <<locked>> | 60% | 35,476 psi | 79% | 1827 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 24,671 psi | 55% | 1745 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,981 psi | 29% | 1319 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,032 psi | 51% | 1781 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,276 psi | 45% | 1716 fps | 99.2% |
| Vihtavuori N350*² | 10.1 gr | 60% | 15,809 psi | 35% | 1598 fps | 90.7% |
| Winchester 231² | <<locked>> | 60% | 30,966 psi | 69% | 1916 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 19,914 psi | 44% | 1677 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 68 powders for .357 Maximum loaded with the .357 | 77gr | Inceptor ARX Prefered Defense. SNPE Vectan SP 2 delivers the highest muzzle velocity at 2,320 fps; across all powders the maximum-charge window runs from 1,453 fps to 2,320 fps. ADI AP 100 gives the best case fill at 100 %, and 43 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 34–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant BLUE DOT, Alliant Herco 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, Vihtavuori N350, ReloadSwiss RS 20 rank at the top here: for .357 Maximum with the .357 | 77gr | Inceptor ARX Prefered Defense 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.