Load Specifications
Load data in caliber 9 mm Steyr with .355 | 105gr | Lehigh Defense Xtreme Penetrator bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star and Hodgdon TrailBoss.
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: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000² | <<locked>> | 64% | 17,318 psi | 88% | 1040 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 16,824 psi | 86% | 1079 fps | 97.8% |
| ADI AS 30² | <<locked>> | 64% | 16,172 psi | 83% | 1004 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 17,492 psi | 89% | 1066 fps | 100% |
| Alliant BE-86² | <<locked>> | 72% | 16,404 psi | 84% | 1076 fps | 99.2% |
| Alliant Green Dot² | <<locked>> | 68% | 17,260 psi | 88% | 1063 fps | 100% |
| Alliant Herco* | <<locked>> | 88% | 16,636 psi | 85% | 1109 fps | 92.3% |
| Alliant RED DOT² | <<locked>> | 68% | 16,998 psi | 87% | 1043 fps | 100% |
| Alliant UNIQUE*² | <<locked>> | 72% | 15,708 psi | 80% | 1089 fps | 91.2% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 16,940 psi | 87% | 1047 fps | 99.8% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 16,288 psi | 83% | 1070 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 15,287 psi | 78% | 1047 fps | 99.8% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 16,230 psi | 83% | 1076 fps | 97% |
| Hodgdon Clays² | <<locked>> | 68% | 17,434 psi | 89% | 978 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 8,514 psi | 43% | 814 fps | 98.2% |
| Hodgdon Universal² | <<locked>> | 68% | 16,882 psi | 86% | 1099 fps | 98.4% |
| Lovex S020*² | <<locked>> | 68% | 16,694 psi | 85% | 1096 fps | 94.6% |
| Maxam CSB 1² | <<locked>> | 76% | 17,477 psi | 89% | 1089 fps | 98.2% |
| Maxam CSB 2² | <<locked>> | 76% | 16,578 psi | 85% | 1119 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 16,578 psi | 85% | 1056 fps | 99.7% |
| Maxam CSB 4² | <<locked>> | 64% | 16,346 psi | 83% | 1040 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 15,360 psi | 78% | 1083 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 7,324 psi | 37% | 787 fps | 92.4% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 17,593 psi | 90% | 1155 fps | 95.4% |
| SNPE Vectan A0*² | <<locked>> | 76% | 17,506 psi | 89% | 1083 fps | 92.4% |
| SNPE Vectan A1² | <<locked>> | 64% | 16,534 psi | 84% | 1050 fps | 98.6% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 15,809 psi | 81% | 1033 fps | 95.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 16,998 psi | 87% | 1083 fps | 97.6% |
| Somchem MP200*² | <<locked>> | 68% | 17,187 psi | 88% | 1109 fps | 91% |
| Somchem MS200*² | <<locked>> | 68% | 15,679 psi | 80% | 1053 fps | 92.2% |
| Vihtavuori N320² | <<locked>> | 64% | 15,954 psi | 81% | 1053 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 16,766 psi | 86% | 1027 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 15,664 psi | 80% | 1089 fps | 98.4% |
| Vihtavuori N340*² | <<locked>> | 72% | 16,404 psi | 84% | 1083 fps | 92.2% |
| Winchester AutoComp ² | <<locked>> | 76% | 17,390 psi | 89% | 1106 fps | 97.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000² | <<locked>> | 60% | 15,592 psi | 80% | 1001 fps | 100% |
| Accurate Solo 1250*² | <<locked>> | 60% | 11,153 psi | 57% | 919 fps | 92.2% |
| ADI AS 30² | <<locked>> | 60% | 14,431 psi | 74% | 965 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 15,011 psi | 77% | 1007 fps | 99.8% |
| Alliant BE-86² | <<locked>> | 60% | 11,371 psi | 58% | 938 fps | 95.5% |
| Alliant Green Dot² | <<locked>> | 60% | 14,069 psi | 72% | 984 fps | 99.5% |
| Alliant Herco*² | <<locked>> | 76% | 12,053 psi | 62% | 974 fps | 86.4% |
| Alliant RED DOT² | <<locked>> | 60% | 13,547 psi | 69% | 961 fps | 100% |
| Alliant UNIQUE*² | <<locked>> | 64% | 12,473 psi | 64% | 991 fps | 87% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 13,068 psi | 67% | 951 fps | 98.2% |
| Baschieri & Pellagri 102 Pistol*² | 3.6 gr | 60% | 7,411 psi | 38% | 797 fps | 93.2% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 13,561 psi | 69% | 1001 fps | 99.2% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 12,357 psi | 63% | 968 fps | 93.3% |
| Hodgdon Clays² | <<locked>> | 60% | 13,953 psi | 71% | 906 fps | 100% |
| Hodgdon TrailBoss*² | 2.2 gr | 64% | 3,960 psi | 20% | 591 fps | 85.8% |
| Hodgdon Universal² | <<locked>> | 60% | 13,285 psi | 68% | 1001 fps | 95.7% |
| Lovex S020*² | <<locked>> | 60% | 12,401 psi | 63% | 978 fps | 89.9% |
| Maxam CSB 1*² | <<locked>> | 60% | 10,704 psi | 55% | 899 fps | 91.6% |
| Maxam CSB 2² | <<locked>> | 60% | 9,732 psi | 50% | 925 fps | 96% |
| Maxam CSB 3² | <<locked>> | 60% | 12,807 psi | 65% | 961 fps | 98% |
| Maxam CSB 4² | <<locked>> | 60% | 13,924 psi | 71% | 981 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 13,851 psi | 71% | 1043 fps | 100% |
| ReloadSwiss RS 14* | <<locked>> | 84% | 5,221 psi | 27% | 682 fps | 85.9% |
| ReloadSwiss RS 20*² | <<locked>> | 64% | 10,805 psi | 55% | 945 fps | 86.2% |
| SNPE Vectan A0*² | <<locked>> | 64% | 12,894 psi | 66% | 958 fps | 87.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 14,475 psi | 74% | 997 fps | 97.3% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 13,822 psi | 71% | 978 fps | 93.2% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 12,807 psi | 65% | 971 fps | 94% |
| Somchem MP200*² | <<locked>> | 60% | 13,285 psi | 68% | 997 fps | 86.2% |
| Somchem MS200*² | <<locked>> | 60% | 12,459 psi | 64% | 961 fps | 88.2% |
| Vihtavuori N320² | <<locked>> | 60% | 13,489 psi | 69% | 994 fps | 99.8% |
| Vihtavuori N32C Tin Star² | 2.8 gr | 60% | 6,077 psi | 31% | 725 fps | 98.2% |
| Vihtavuori N330² | <<locked>> | 60% | 12,154 psi | 62% | 991 fps | 95.5% |
| Vihtavuori N340*² | <<locked>> | 60% | 11,240 psi | 57% | 932 fps | 85.3% |
| Winchester AutoComp *² | <<locked>> | 60% | 10,849 psi | 55% | 919 fps | 90.3% |
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 35 powders for 9 mm Steyr loaded with the .355 | 105gr | Lehigh Defense Xtreme Penetrator. ReloadSwiss RS 20 delivers the highest muzzle velocity at 1,155 fps; across all powders the maximum-charge window runs from 787 fps to 1,155 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 6 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (135 MPa), the top charges use 37–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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. Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star, Hodgdon TrailBoss rank at the top here: for 9 mm Steyr with the .355 | 105gr | Lehigh Defense Xtreme Penetrator they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Herco, Alliant UNIQUE, Lovex S020 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1000, Accurate Solo 1250, ADI AS 30 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.