Load Specifications
Load data in caliber 9 mm Para with .355 | 124gr | X-TREME X-DEF HP bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 20, Alliant UNIQUE and Winchester AutoComp .
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% | 28,355 psi | 83% | 1063 fps | 95.8% |
| Accurate No. 5*² | <<locked>> | 68% | 29,544 psi | 87% | 1135 fps | 87.8% |
| Accurate Solo 1000 | <<locked>> | 80% | 29,602 psi | 87% | 1033 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 29,283 psi | 86% | 1079 fps | 100% |
| ADI AP 70N² | <<locked>> | 72% | 28,979 psi | 85% | 1089 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 30,734 psi | 90% | 948 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 30,501 psi | 89% | 978 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 29,022 psi | 85% | 1001 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 28,689 psi | 84% | 1037 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 30,400 psi | 89% | 1089 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 30,777 psi | 90% | 1142 fps | 99.3% |
| Alliant Green Dot | <<locked>> | 80% | 28,369 psi | 83% | 1033 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 26,832 psi | 79% | 1089 fps | 97.8% |
| Alliant RED DOT | <<locked>> | 84% | 29,225 psi | 86% | 1024 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 28,572 psi | 84% | 1112 fps | 98.3% |
| Alliant UNIQUE | <<locked>> | 88% | 28,123 psi | 83% | 1112 fps | 98.2% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 30,545 psi | 90% | 1050 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 26,281 psi | 77% | 1024 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 30,400 psi | 89% | 1076 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 84% | 29,718 psi | 87% | 1096 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 30,530 psi | 90% | 974 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 27,891 psi | 82% | 1102 fps | 89.4% |
| Hodgdon Longshot*² | <<locked>> | 72% | 30,734 psi | 90% | 1145 fps | 93.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,096 psi | 35% | 732 fps | 99.9% |
| Hodgdon Universal | <<locked>> | 80% | 28,979 psi | 85% | 1089 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 29,486 psi | 87% | 1135 fps | 87.8% |
| Lovex S011² | <<locked>> | 68% | 27,035 psi | 79% | 1020 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 29,225 psi | 86% | 1099 fps | 99.5% |
| Maxam CSB 1 | <<locked>> | 92% | 29,965 psi | 88% | 1086 fps | 100% |
| Maxam CSB 2 | <<locked>> | 88% | 28,514 psi | 84% | 1089 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 30,676 psi | 90% | 1079 fps | 100% |
| Maxam CSB 4 | <<locked>> | 84% | 30,255 psi | 89% | 1056 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 29,240 psi | 86% | 1001 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 28,282 psi | 83% | 1106 fps | 96.5% |
| Ramshot True Blue*² | <<locked>> | 68% | 28,195 psi | 83% | 1106 fps | 91.8% |
| ReloadSwiss RS 12² | <<locked>> | 76% | 28,050 psi | 82% | 1070 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,502 psi | 34% | 735 fps | 97.9% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 28,703 psi | 84% | 1138 fps | 99.6% |
| Rottweil P 801² | <<locked>> | 72% | 30,284 psi | 89% | 1063 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 25,498 psi | 75% | 1171 fps | 88.8% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 29,486 psi | 87% | 1135 fps | 87.8% |
| SNPE Vectan A0 | <<locked>> | 92% | 29,283 psi | 86% | 1086 fps | 98.3% |
| SNPE Vectan A1 | <<locked>> | 80% | 28,572 psi | 84% | 1053 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 27,456 psi | 81% | 1047 fps | 99.7% |
| SNPE Vectan BA10² | <<locked>> | 72% | 29,124 psi | 85% | 961 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 30,792 psi | 90% | 1129 fps | 92.2% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 29,240 psi | 86% | 1083 fps | 100% |
| Somchem MP200 | <<locked>> | 80% | 27,746 psi | 81% | 1093 fps | 97% |
| Somchem MS200 | <<locked>> | 88% | 30,487 psi | 89% | 1115 fps | 99.3% |
| Vihtavuori 3N37* | <<locked>> | 92% | 29,878 psi | 88% | 1145 fps | 93.1% |
| Vihtavuori N310² | <<locked>> | 64% | 30,298 psi | 89% | 984 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 29,936 psi | 88% | 1063 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 21,640 psi | 63% | 902 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 30,023 psi | 88% | 1115 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 30,400 psi | 89% | 1119 fps | 98.9% |
| Vihtavuori N350* | <<locked>> | 96% | 27,949 psi | 82% | 1115 fps | 92.5% |
| Winchester 231² | <<locked>> | 68% | 28,456 psi | 83% | 1060 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 29,907 psi | 88% | 1142 fps | 91.9% |
| Winchester AutoComp | <<locked>> | 92% | 30,632 psi | 90% | 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% | 16,462 psi | 48% | 856 fps | 87.7% |
| Accurate No. 5*² | <<locked>> | 64% | 26,527 psi | 78% | 1089 fps | 85.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,072 psi | 53% | 863 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 14,359 psi | 42% | 820 fps | 95.4% |
| ADI AP 70N² | <<locked>> | 60% | 20,566 psi | 60% | 955 fps | 99.4% |
| ADI APS 350² | <<locked>> | 60% | 20,972 psi | 62% | 827 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 19,334 psi | 57% | 830 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 18,405 psi | 54% | 850 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 18,681 psi | 55% | 883 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 14,823 psi | 43% | 837 fps | 98% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 18,942 psi | 56% | 938 fps | 94.2% |
| Alliant Green Dot² | <<locked>> | 60% | 17,535 psi | 51% | 863 fps | 100% |
| Alliant Herco*² | <<locked>> | 64% | 12,430 psi | 36% | 784 fps | 86.1% |
| Alliant RED DOT² | <<locked>> | 60% | 17,506 psi | 51% | 846 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 21,118 psi | 62% | 984 fps | 94.8% |
| Alliant UNIQUE*² | 3.4 gr | 60% | 14,881 psi | 44% | 853 fps | 89.3% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 16,389 psi | 48% | 840 fps | 99.5% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,805 psi | 32% | 732 fps | 97.8% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 16,795 psi | 49% | 879 fps | 99.9% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 15,940 psi | 47% | 860 fps | 96.2% |
| Hodgdon Clays² | <<locked>> | 60% | 16,476 psi | 48% | 781 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 24,990 psi | 73% | 1056 fps | 87.5% |
| Hodgdon Longshot*² | <<locked>> | 60% | 21,350 psi | 63% | 994 fps | 87% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,947 psi | 20% | 554 fps | 95.7% |
| Hodgdon Universal² | <<locked>> | 60% | 17,927 psi | 53% | 902 fps | 98.4% |
| Lovex D036*² | <<locked>> | 64% | 26,469 psi | 78% | 1086 fps | 85.8% |
| Lovex S011² | <<locked>> | 60% | 21,205 psi | 62% | 935 fps | 99.8% |
| Lovex S020*² | <<locked>> | 60% | 16,027 psi | 47% | 873 fps | 93.4% |
| Maxam CSB 1² | <<locked>> | 60% | 13,909 psi | 41% | 804 fps | 95.1% |
| Maxam CSB 2² | <<locked>> | 60% | 14,098 psi | 41% | 843 fps | 99.2% |
| Maxam CSB 3² | <<locked>> | 60% | 15,896 psi | 47% | 843 fps | 99.3% |
| Maxam CSB 4² | <<locked>> | 60% | 17,782 psi | 52% | 873 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 19,247 psi | 56% | 866 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 19,174 psi | 56% | 948 fps | 90.9% |
| Ramshot True Blue*² | <<locked>> | 60% | 21,886 psi | 64% | 997 fps | 87.5% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 18,550 psi | 54% | 925 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 6,657 psi | 20% | 545 fps | 90.4% |
| ReloadSwiss RS 20*² | 3.5 gr | 60% | 12,720 psi | 37% | 814 fps | 88.7% |
| Rottweil P 801² | <<locked>> | 60% | 22,205 psi | 65% | 955 fps | 100% |
| Rottweil P 806* | <<locked>> | 96% | 23,047 psi | 68% | 1129 fps | 86.8% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 26,469 psi | 78% | 1086 fps | 85.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,301 psi | 42% | 810 fps | 88.3% |
| SNPE Vectan A1² | <<locked>> | 60% | 17,216 psi | 51% | 869 fps | 98.6% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 16,534 psi | 49% | 856 fps | 95.3% |
| SNPE Vectan BA10² | <<locked>> | 60% | 21,553 psi | 63% | 866 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 84% | 21,611 psi | 63% | 984 fps | 86.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,505 psi | 48% | 869 fps | 96.8% |
| Somchem MP200*² | <<locked>> | 60% | 16,346 psi | 48% | 879 fps | 89.3% |
| Somchem MS200*² | <<locked>> | 60% | 15,490 psi | 45% | 846 fps | 91.3% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 19,667 psi | 58% | 974 fps | 86.1% |
| Vihtavuori N310² | <<locked>> | 60% | 27,253 psi | 80% | 951 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 17,187 psi | 50% | 876 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,863 psi | 29% | 669 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 15,432 psi | 45% | 879 fps | 97.8% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,431 psi | 42% | 830 fps | 89.2% |
| Vihtavuori N350* | <<locked>> | 80% | 18,739 psi | 55% | 955 fps | 85.6% |
| Winchester 231² | <<locked>> | 60% | 22,960 psi | 67% | 981 fps | 99.9% |
| Winchester 572*² | <<locked>> | 60% | 26,658 psi | 78% | 1089 fps | 90% |
| Winchester AutoComp *² | 3.7 gr | 60% | 14,518 psi | 43% | 830 fps | 94.3% |
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 26 powders for 9 mm Para loaded with the .355 | 124gr | X-TREME X-DEF HP. Vihtavuori 3N37 delivers the highest muzzle velocity at 1,145 fps; across all powders the maximum-charge window runs from 732 fps to 1,145 fps. Alliant Herco gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 34–90 %, 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. ReloadSwiss RS 20, Alliant UNIQUE, Winchester AutoComp rank at the top here: for 9 mm Para with the .355 | 124gr | X-TREME X-DEF HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, SNPE Vectan BA7 1/2, Vihtavuori 3N37, Vihtavuori N350 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, Alliant BE-86, Alliant Herco 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.