Load Specifications
Load data in caliber 9 mm Para with .355 | 124gr | Geco HEXAGON bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, Somchem MS200 and Hodgdon Universal.
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>> | 84% | 27,963 psi | 82% | 1037 fps | 94.5% |
| Accurate Solo 1000 | <<locked>> | 84% | 28,311 psi | 83% | 1004 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 29,689 psi | 87% | 1070 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 29,689 psi | 87% | 1089 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 29,080 psi | 85% | 915 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 27,905 psi | 82% | 935 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 29,776 psi | 87% | 1001 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 29,486 psi | 87% | 1037 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 28,413 psi | 83% | 1053 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 30,168 psi | 89% | 1115 fps | 98.6% |
| Alliant Green Dot | <<locked>> | 92% | 30,501 psi | 89% | 1053 fps | 100% |
| Alliant Herco*ᴾ | <<locked>> | 100% | 21,553 psi | 63% | 991 fps | 94.4% |
| Alliant RED DOT | <<locked>> | 92% | 29,849 psi | 88% | 1024 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 30,545 psi | 90% | 1119 fps | 98.2% |
| Alliant UNIQUE | <<locked>> | 96% | 29,066 psi | 85% | 1112 fps | 97.9% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 27,920 psi | 82% | 1007 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 21,683 psi | 64% | 958 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 28,021 psi | 82% | 1040 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 27,514 psi | 81% | 1060 fps | 99.7% |
| Hodgdon Clays | <<locked>> | 92% | 29,356 psi | 86% | 948 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 27,064 psi | 79% | 1024 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 80% | 30,400 psi | 89% | 1115 fps | 89.4% |
| Hodgdon Longshot*² | <<locked>> | 76% | 29,892 psi | 88% | 1112 fps | 91.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 9,369 psi | 27% | 676 fps | 98.2% |
| Hodgdon Universal | <<locked>> | 88% | 28,268 psi | 83% | 1070 fps | 100% |
| Lovex S011² | <<locked>> | 76% | 30,313 psi | 89% | 1047 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 29,472 psi | 86% | 1089 fps | 99.1% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 30,501 psi | 89% | 1076 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 30,414 psi | 89% | 1109 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 29,530 psi | 87% | 1050 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 28,863 psi | 85% | 1027 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 30,400 psi | 89% | 1004 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 29,254 psi | 86% | 1102 fps | 96% |
| Ramshot True Blue*² | <<locked>> | 76% | 30,806 psi | 90% | 1119 fps | 91.9% |
| Ramshot Zip² | <<locked>> | 68% | 30,095 psi | 88% | 1066 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 27,891 psi | 82% | 1066 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 8,093 psi | 24% | 646 fps | 92.4% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 29,559 psi | 87% | 1132 fps | 99.4% |
| Rottweil P 801 | <<locked>> | 80% | 30,661 psi | 90% | 1063 fps | 100% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 30,284 psi | 89% | 1079 fps | 97.9% |
| SNPE Vectan A1 | <<locked>> | 88% | 30,734 psi | 90% | 1063 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 29,544 psi | 87% | 1056 fps | 99.7% |
| SNPE Vectan BA10² | <<locked>> | 76% | 29,486 psi | 87% | 951 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 25,672 psi | 75% | 1037 fps | 88% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 28,094 psi | 82% | 1053 fps | 99.9% |
| Somchem MP200 | <<locked>> | 88% | 29,254 psi | 86% | 1096 fps | 96.8% |
| Somchem MS200 | <<locked>> | 92% | 28,456 psi | 83% | 1073 fps | 98.3% |
| Vihtavuori 3N37*ᴾ | <<locked>> | 100% | 30,197 psi | 89% | 1132 fps | 92.1% |
| Vihtavuori N310² | <<locked>> | 68% | 29,515 psi | 87% | 968 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 29,660 psi | 87% | 1050 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 16,955 psi | 50% | 840 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 28,834 psi | 85% | 1089 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 28,500 psi | 84% | 1076 fps | 97.7% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 25,599 psi | 75% | 1060 fps | 89.7% |
| Winchester 231² | <<locked>> | 76% | 30,095 psi | 88% | 1066 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 30,240 psi | 89% | 1060 fps | 100% |
| Winchester 572*² | <<locked>> | 68% | 29,747 psi | 87% | 1119 fps | 90.6% |
| Winchester AutoComp | <<locked>> | 96% | 28,834 psi | 85% | 1073 fps | 99.8% |
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>> | 64% | 15,635 psi | 46% | 830 fps | 85.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 15,838 psi | 46% | 814 fps | 99.8% |
| Accurate Solo 1250*² | <<locked>> | 60% | 11,951 psi | 35% | 761 fps | 91.6% |
| ADI AP 70N² | <<locked>> | 60% | 16,926 psi | 50% | 886 fps | 97.3% |
| ADI APS 350² | <<locked>> | 60% | 18,463 psi | 54% | 784 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 17,172 psi | 50% | 791 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 15,490 psi | 45% | 797 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 15,911 psi | 47% | 830 fps | 99.6% |
| Alliant BE-86*² | <<locked>> | 60% | 11,806 psi | 35% | 764 fps | 94.5% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 16,041 psi | 47% | 869 fps | 90.4% |
| Alliant Green Dot² | <<locked>> | 60% | 14,765 psi | 43% | 807 fps | 99.2% |
| Alliant Herco*² | <<locked>> | 76% | 12,952 psi | 38% | 807 fps | 85.7% |
| Alliant RED DOT² | <<locked>> | 60% | 14,330 psi | 42% | 791 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 17,579 psi | 52% | 902 fps | 91% |
| Alliant UNIQUE*² | 3.2 gr | 64% | 13,082 psi | 38% | 810 fps | 85.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 13,953 psi | 41% | 787 fps | 97.8% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 7,919 psi | 23% | 653 fps | 92.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 13,547 psi | 40% | 810 fps | 98.4% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 21,756 psi | 64% | 974 fps | 98.2% |
| Hodgdon Clays² | <<locked>> | 60% | 14,127 psi | 41% | 735 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 24,439 psi | 72% | 988 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 23,670 psi | 69% | 1017 fps | 85.1% |
| Hodgdon Longshot*² | <<locked>> | 68% | 23,192 psi | 68% | 1014 fps | 87.2% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,757 psi | 14% | 489 fps | 87.8% |
| Hodgdon Universal² | 3 gr | 60% | 14,243 psi | 42% | 827 fps | 95.2% |
| Lovex S011² | <<locked>> | 60% | 18,362 psi | 54% | 873 fps | 98.5% |
| Lovex S020*² | <<locked>> | 60% | 12,792 psi | 38% | 797 fps | 88.4% |
| Maxam CSB 1*² | <<locked>> | 60% | 10,892 psi | 32% | 725 fps | 90.1% |
| Maxam CSB 2² | <<locked>> | 60% | 10,240 psi | 30% | 758 fps | 95.4% |
| Maxam CSB 3² | <<locked>> | 60% | 13,431 psi | 39% | 787 fps | 97.4% |
| Maxam CSB 4² | <<locked>> | 60% | 14,301 psi | 42% | 801 fps | 99.5% |
| Maxam CSB 5² | <<locked>> | 60% | 16,418 psi | 48% | 820 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 16,056 psi | 47% | 873 fps | 86.5% |
| Ramshot True Blue*² | <<locked>> | 64% | 20,943 psi | 61% | 968 fps | 85.3% |
| Ramshot Zip² | <<locked>> | 60% | 23,496 psi | 69% | 978 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 14,127 psi | 41% | 850 fps | 99.8% |
| ReloadSwiss RS 14*² | <<locked>> | 76% | 5,627 psi | 17% | 541 fps | 85.4% |
| ReloadSwiss RS 20*² | <<locked>> | 68% | 12,633 psi | 37% | 810 fps | 87.2% |
| Rottweil P 801² | <<locked>> | 60% | 16,940 psi | 50% | 876 fps | 100% |
| SNPE Vectan A0*² | <<locked>> | 64% | 13,140 psi | 39% | 774 fps | 85.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 14,649 psi | 43% | 810 fps | 96.3% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 14,011 psi | 41% | 794 fps | 91.7% |
| SNPE Vectan BA10² | <<locked>> | 60% | 19,551 psi | 57% | 827 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 96% | 23,627 psi | 69% | 1004 fps | 86.5% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 13,460 psi | 39% | 797 fps | 93.2% |
| Somchem MP200*² | <<locked>> | 64% | 15,040 psi | 44% | 843 fps | 86.5% |
| Somchem MS200*² | 3 gr | 60% | 12,618 psi | 37% | 774 fps | 86.3% |
| Vihtavuori 3N37* | <<locked>> | 84% | 20,160 psi | 59% | 974 fps | 85.2% |
| Vihtavuori N310² | <<locked>> | 60% | 22,902 psi | 67% | 892 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 14,359 psi | 42% | 823 fps | 99.7% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 6,860 psi | 20% | 600 fps | 98.4% |
| Vihtavuori N330*² | <<locked>> | 60% | 12,270 psi | 36% | 801 fps | 94% |
| Vihtavuori N340*² | <<locked>> | 64% | 12,923 psi | 38% | 794 fps | 85.9% |
| Vihtavuori N350* | <<locked>> | 92% | 21,219 psi | 62% | 988 fps | 86.4% |
| Winchester 231² | <<locked>> | 60% | 19,029 psi | 56% | 906 fps | 98.7% |
| Winchester 244² | <<locked>> | 60% | 26,034 psi | 76% | 1010 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 22,742 psi | 67% | 1010 fps | 85.9% |
| Winchester AutoComp *² | <<locked>> | 60% | 10,994 psi | 32% | 738 fps | 88.6% |
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 58 powders for 9 mm Para loaded with the .355 | 124gr | Geco HEXAGON. ReloadSwiss RS 20 delivers the highest muzzle velocity at 1,132 fps; across all powders the maximum-charge window runs from 646 fps to 1,132 fps. Alliant Herco gives the best case fill at 100 %, and 47 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 24–90 %, 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, Somchem MS200, Hodgdon Universal rank at the top here: for 9 mm Para with the .355 | 124gr | Geco HEXAGON they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 2, Alliant Herco, Hodgdon HS-6 burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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.