Load Specifications
Load data in caliber .380 ACP with .355 | 90gr | Sierra Sports Master bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star.
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: 3.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000² | <<locked>> | 72% | 17,027 psi | 87% | 968 fps | 96.7% |
| Accurate Solo 1250* | <<locked>> | 84% | 16,360 psi | 84% | 988 fps | 88.6% |
| ADI AP 70N*² | <<locked>> | 72% | 17,419 psi | 89% | 1030 fps | 91% |
| ADI APS 350² | <<locked>> | 64% | 17,143 psi | 88% | 899 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 16,853 psi | 86% | 922 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 17,593 psi | 90% | 981 fps | 99.8% |
| ADI AS 50N² | <<locked>> | 72% | 16,534 psi | 84% | 974 fps | 95.6% |
| Alliant BE-86* | <<locked>> | 84% | 16,665 psi | 85% | 1007 fps | 92.3% |
| Alliant Green Dot² | <<locked>> | 76% | 16,375 psi | 84% | 974 fps | 95.6% |
| Alliant RED DOT² | <<locked>> | 76% | 16,215 psi | 83% | 971 fps | 99.1% |
| Baschieri & Pellagri 100*² | <<locked>> | 76% | 16,244 psi | 83% | 961 fps | 93.7% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 15,867 psi | 81% | 994 fps | 95.8% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 76% | 16,143 psi | 82% | 994 fps | 94.7% |
| Hodgdon CFE Pistol* | <<locked>> | 80% | 16,302 psi | 83% | 994 fps | 88% |
| Hodgdon Clays² | <<locked>> | 76% | 16,940 psi | 87% | 925 fps | 100% |
| Hodgdon Universal* | <<locked>> | 80% | 17,419 psi | 89% | 1030 fps | 91% |
| Lovex S011*² | <<locked>> | 64% | 16,230 psi | 83% | 951 fps | 90.6% |
| Maxam CSB 1* | <<locked>> | 88% | 17,260 psi | 88% | 1007 fps | 89.8% |
| Maxam CSB 2 | <<locked>> | 92% | 17,260 psi | 88% | 1076 fps | 96% |
| Maxam CSB 3* | <<locked>> | 80% | 16,491 psi | 84% | 988 fps | 94% |
| Maxam CSB 4² | <<locked>> | 76% | 16,853 psi | 86% | 988 fps | 97% |
| Maxam CSB 5² | <<locked>> | 72% | 17,303 psi | 88% | 984 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 17,492 psi | 89% | 1076 fps | 98.2% |
| Rottweil P 801² | <<locked>> | 72% | 17,100 psi | 87% | 1037 fps | 99.4% |
| SNPE Vectan A1*² | <<locked>> | 76% | 17,477 psi | 89% | 991 fps | 91.9% |
| SNPE Vectan BA9 1/2* | <<locked>> | 80% | 16,824 psi | 86% | 997 fps | 88.8% |
| Vihtavuori N320² | <<locked>> | 76% | 16,288 psi | 83% | 1004 fps | 96.8% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 11,995 psi | 61% | 883 fps | 99.2% |
| Vihtavuori N330* | <<locked>> | 80% | 16,085 psi | 82% | 1017 fps | 90.1% |
| Winchester 231*² | <<locked>> | 64% | 16,288 psi | 83% | 978 fps | 90.4% |
| Winchester AutoComp * | <<locked>> | 88% | 17,448 psi | 89% | 1020 fps | 88.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 3.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000*² | <<locked>> | 60% | 12,444 psi | 64% | 846 fps | 92.2% |
| Accurate Solo 1250*² | <<locked>> | 76% | 13,764 psi | 70% | 919 fps | 85.3% |
| ADI AP 70N*² | <<locked>> | 64% | 14,040 psi | 72% | 942 fps | 87% |
| ADI APS 350² | <<locked>> | 60% | 14,794 psi | 76% | 853 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 13,750 psi | 70% | 853 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 11,908 psi | 61% | 837 fps | 96.6% |
| ADI AS 50N*² | <<locked>> | 60% | 12,241 psi | 63% | 856 fps | 90.9% |
| Alliant BE-86*² | <<locked>> | 72% | 12,198 psi | 62% | 889 fps | 86.7% |
| Alliant Green Dot*² | <<locked>> | 60% | 11,371 psi | 58% | 830 fps | 89.7% |
| Alliant RED DOT*² | <<locked>> | 60% | 10,834 psi | 55% | 820 fps | 94.5% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 10,544 psi | 54% | 804 fps | 86.2% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 76% | 8,876 psi | 45% | 781 fps | 85.2% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 10,080 psi | 51% | 820 fps | 86.3% |
| Hodgdon CFE Pistol*² | <<locked>> | 76% | 14,765 psi | 75% | 955 fps | 86.1% |
| Hodgdon Clays² | <<locked>> | 60% | 11,211 psi | 57% | 787 fps | 99.3% |
| Hodgdon Universal*² | <<locked>> | 72% | 14,040 psi | 72% | 942 fps | 87% |
| Lovex S011*² | <<locked>> | 60% | 14,417 psi | 74% | 906 fps | 88.5% |
| Maxam CSB 1* | <<locked>> | 80% | 13,895 psi | 71% | 919 fps | 85.8% |
| Maxam CSB 2*² | <<locked>> | 72% | 10,283 psi | 53% | 873 fps | 86.7% |
| Maxam CSB 3*² | <<locked>> | 60% | 10,153 psi | 52% | 804 fps | 85.2% |
| Maxam CSB 4*² | <<locked>> | 60% | 10,762 psi | 55% | 820 fps | 90.1% |
| Maxam CSB 5² | <<locked>> | 60% | 12,241 psi | 63% | 866 fps | 98.8% |
| ReloadSwiss RS 12*² | <<locked>> | 60% | 9,558 psi | 49% | 850 fps | 89% |
| Rottweil P 801² | <<locked>> | 60% | 11,966 psi | 61% | 906 fps | 96% |
| SNPE Vectan A1*² | <<locked>> | 64% | 12,792 psi | 65% | 869 fps | 86.2% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 72% | 14,359 psi | 73% | 932 fps | 85.8% |
| Vihtavuori N320*² | <<locked>> | 60% | 10,341 psi | 53% | 833 fps | 89.6% |
| Vihtavuori N32C Tin Star*² | 2.2 gr | 64% | 5,714 psi | 29% | 640 fps | 87.6% |
| Vihtavuori N330*² | <<locked>> | 72% | 12,865 psi | 66% | 928 fps | 85.4% |
| Winchester 231*² | <<locked>> | 60% | 14,620 psi | 75% | 935 fps | 88.4% |
| Winchester AutoComp * | <<locked>> | 84% | 15,882 psi | 81% | 981 fps | 86.4% |
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 4 powders for .380 ACP loaded with the .355 | 90gr | Sierra Sports Master. Maxam CSB 2 delivers the highest muzzle velocity at 1,076 fps; across all powders the maximum-charge window runs from 883 fps to 1,076 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 4 of the 4 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (135 MPa), the top charges use 61–88 %, leaving at least 12 % headroom. Baschieri & Pellagri 102 Pistol, 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. Vihtavuori N32C Tin Star rank at the top here: for .380 ACP with the .355 | 90gr | Sierra Sports Master they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant BE-86 burn incompletely and react more sensitively to barrel length and temperature. Alliant BE-86, Baschieri & Pellagri 102 Pistol, Maxam CSB 2 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.