Load Specifications
Load data in caliber 9 mm Para with .357 | 125gr | Hornady XTP bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, ReloadSwiss RS 20 and Vihtavuori N340.
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: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 28,036 psi | 82% | 1073 fps | 96.1% |
| Accurate No. 5*² | <<locked>> | 68% | 28,529 psi | 84% | 1135 fps | 87.9% |
| Accurate Solo 1000 | <<locked>> | 80% | 28,311 psi | 83% | 1030 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 27,514 psi | 81% | 1070 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 30,327 psi | 89% | 1122 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 29,907 psi | 88% | 948 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 28,268 psi | 83% | 961 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 30,066 psi | 88% | 1030 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 29,457 psi | 86% | 1060 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 29,341 psi | 86% | 1093 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 30,603 psi | 90% | 1155 fps | 99.4% |
| Alliant Green Dot | <<locked>> | 84% | 28,993 psi | 85% | 1060 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 25,367 psi | 74% | 1083 fps | 97.6% |
| Alliant RED DOT | <<locked>> | 84% | 28,863 psi | 85% | 1033 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 28,268 psi | 83% | 1119 fps | 98.5% |
| Alliant UNIQUE | <<locked>> | 92% | 29,254 psi | 86% | 1145 fps | 98.8% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 28,848 psi | 85% | 1043 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 25,222 psi | 74% | 1024 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 29,196 psi | 86% | 1076 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 27,557 psi | 81% | 1086 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 29,385 psi | 86% | 974 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 30,313 psi | 89% | 1093 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 26,687 psi | 78% | 1099 fps | 89.2% |
| Hodgdon Longshot*² | <<locked>> | 72% | 29,602 psi | 87% | 1145 fps | 93.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,414 psi | 31% | 719 fps | 99.5% |
| Hodgdon Universal | <<locked>> | 84% | 30,327 psi | 89% | 1122 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 28,471 psi | 84% | 1135 fps | 87.8% |
| Lovex S011² | <<locked>> | 72% | 29,617 psi | 87% | 1066 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 27,021 psi | 79% | 1086 fps | 99.3% |
| Maxam CSB 1 | <<locked>> | 96% | 30,603 psi | 90% | 1106 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 29,863 psi | 88% | 1122 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 30,443 psi | 89% | 1089 fps | 100% |
| Maxam CSB 4 | <<locked>> | 84% | 30,153 psi | 88% | 1066 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 30,705 psi | 90% | 1030 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 30,734 psi | 90% | 1155 fps | 97.7% |
| Ramshot True Blue*² | <<locked>> | 68% | 27,122 psi | 80% | 1102 fps | 91.8% |
| Ramshot Zip² | <<locked>> | 64% | 30,371 psi | 89% | 1096 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 29,225 psi | 86% | 1102 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,529 psi | 28% | 709 fps | 96% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 30,342 psi | 89% | 1171 fps | 99.9% |
| Rottweil P 801² | <<locked>> | 72% | 29,066 psi | 85% | 1066 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 23,902 psi | 70% | 1161 fps | 88.2% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 28,471 psi | 84% | 1135 fps | 87.8% |
| SNPE Vectan A0 | <<locked>> | 92% | 28,718 psi | 84% | 1093 fps | 98.4% |
| SNPE Vectan A1 | <<locked>> | 80% | 28,108 psi | 82% | 1060 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 30,545 psi | 90% | 1099 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 28,253 psi | 83% | 961 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 29,617 psi | 87% | 1129 fps | 92.3% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 28,529 psi | 84% | 1089 fps | 100% |
| Somchem MP200 | <<locked>> | 84% | 30,081 psi | 88% | 1142 fps | 98.1% |
| Somchem MS200 | <<locked>> | 88% | 29,704 psi | 87% | 1119 fps | 99.3% |
| Vihtavuori 3N37* | <<locked>> | 92% | 28,674 psi | 84% | 1145 fps | 93.1% |
| Vihtavuori N310² | <<locked>> | 64% | 28,906 psi | 85% | 984 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 28,137 psi | 83% | 1056 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 19,595 psi | 57% | 892 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 29,356 psi | 86% | 1122 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 29,631 psi | 87% | 1122 fps | 98.9% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 30,356 psi | 89% | 1165 fps | 94.2% |
| Winchester 231² | <<locked>> | 72% | 30,371 psi | 89% | 1096 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 28,979 psi | 85% | 1142 fps | 92% |
| Winchester AutoComp | <<locked>> | 92% | 29,356 psi | 86% | 1109 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 15,185 psi | 45% | 846 fps | 86.8% |
| Accurate No. 5*² | <<locked>> | 64% | 25,541 psi | 75% | 1086 fps | 85.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 17,071 psi | 50% | 860 fps | 100% |
| Accurate Solo 1250*² | <<locked>> | 60% | 12,966 psi | 38% | 807 fps | 94.4% |
| ADI AP 70N² | <<locked>> | 60% | 19,522 psi | 57% | 958 fps | 99.3% |
| ADI APS 350² | <<locked>> | 60% | 20,320 psi | 60% | 830 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 18,550 psi | 54% | 833 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 17,042 psi | 50% | 843 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 18,130 psi | 53% | 892 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 13,184 psi | 39% | 817 fps | 97.1% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 17,666 psi | 52% | 932 fps | 93.6% |
| Alliant Green Dot² | <<locked>> | 60% | 16,070 psi | 47% | 853 fps | 99.9% |
| Alliant Herco*² | <<locked>> | 68% | 11,661 psi | 34% | 787 fps | 85.3% |
| Alliant RED DOT² | <<locked>> | 60% | 16,070 psi | 47% | 843 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 19,827 psi | 58% | 974 fps | 94.4% |
| Alliant UNIQUE*² | 3.5 gr | 60% | 13,169 psi | 39% | 833 fps | 87.6% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 15,026 psi | 44% | 830 fps | 99.2% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,224 psi | 27% | 712 fps | 96.2% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 15,650 psi | 46% | 873 fps | 99.8% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 24,482 psi | 72% | 1043 fps | 99.6% |
| Hodgdon Clays² | <<locked>> | 60% | 15,635 psi | 46% | 784 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 26,672 psi | 78% | 1043 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 23,873 psi | 70% | 1053 fps | 87.3% |
| Hodgdon Longshot*² | <<locked>> | 60% | 19,479 psi | 57% | 974 fps | 86% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,076 psi | 15% | 515 fps | 90.7% |
| Hodgdon Universal² | <<locked>> | 60% | 16,041 psi | 47% | 889 fps | 97.7% |
| Lovex D036*² | <<locked>> | 64% | 25,498 psi | 75% | 1086 fps | 85.8% |
| Lovex S011² | <<locked>> | 60% | 21,147 psi | 62% | 948 fps | 99.9% |
| Lovex S020*² | <<locked>> | 60% | 15,084 psi | 44% | 873 fps | 92.9% |
| Maxam CSB 1*² | <<locked>> | 60% | 12,531 psi | 37% | 791 fps | 94% |
| Maxam CSB 2² | <<locked>> | 60% | 12,212 psi | 36% | 823 fps | 98.3% |
| Maxam CSB 3² | <<locked>> | 60% | 14,576 psi | 43% | 833 fps | 99% |
| Maxam CSB 4² | <<locked>> | 60% | 16,505 psi | 48% | 866 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 18,086 psi | 53% | 863 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 18,304 psi | 54% | 948 fps | 90.7% |
| Ramshot True Blue*² | <<locked>> | 60% | 20,798 psi | 61% | 997 fps | 87.2% |
| Ramshot Zip² | <<locked>> | 60% | 26,731 psi | 78% | 1053 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 16,346 psi | 48% | 909 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 64% | 5,265 psi | 15% | 531 fps | 85.8% |
| ReloadSwiss RS 20*² | 3.6 gr | 60% | 11,313 psi | 33% | 794 fps | 86.8% |
| Rottweil P 801² | <<locked>> | 60% | 20,030 psi | 59% | 945 fps | 100% |
| Rottweil P 806* | <<locked>> | 96% | 21,437 psi | 63% | 1115 fps | 86.1% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 25,498 psi | 75% | 1086 fps | 85.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,053 psi | 38% | 797 fps | 87.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 16,723 psi | 49% | 876 fps | 98.6% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 15,998 psi | 47% | 863 fps | 95.2% |
| SNPE Vectan BA10² | <<locked>> | 60% | 20,798 psi | 61% | 866 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 84% | 20,523 psi | 60% | 981 fps | 86% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 15,026 psi | 44% | 856 fps | 96% |
| Somchem MP200*² | <<locked>> | 60% | 15,374 psi | 45% | 876 fps | 88.8% |
| Somchem MS200*² | <<locked>> | 60% | 14,054 psi | 41% | 833 fps | 90.1% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 18,550 psi | 54% | 971 fps | 85.6% |
| Vihtavuori N310² | <<locked>> | 60% | 25,976 psi | 76% | 948 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 15,664 psi | 46% | 866 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,122 psi | 24% | 653 fps | 99.9% |
| Vihtavuori N330² | <<locked>> | 60% | 13,909 psi | 41% | 863 fps | 97% |
| Vihtavuori N340*² | 3.6 gr | 60% | 12,850 psi | 38% | 810 fps | 87.6% |
| Vihtavuori N350* | <<locked>> | 80% | 17,811 psi | 52% | 951 fps | 85.2% |
| Winchester 231² | <<locked>> | 60% | 21,364 psi | 63% | 971 fps | 99.8% |
| Winchester 572*² | <<locked>> | 60% | 25,802 psi | 76% | 1093 fps | 90.1% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,778 psi | 37% | 807 fps | 92.8% |
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 61 powders for 9 mm Para loaded with the .357 | 125gr | Hornady XTP. ReloadSwiss RS 20 delivers the highest muzzle velocity at 1,171 fps; across all powders the maximum-charge window runs from 709 fps to 1,171 fps. Alliant Herco gives the best case fill at 100 %, and 41 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 28–90 %, leaving at least 10 % headroom. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss 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. Alliant UNIQUE, ReloadSwiss RS 20, Vihtavuori N340 rank at the top here: for 9 mm Para with the .357 | 125gr | Hornady XTP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Hodgdon HS-6, Hodgdon Longshot burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate No. 5, Accurate Solo 1000 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.