Load Specifications
Load data in caliber .380 ACP with .357 | 125gr | Speer JHP bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Maxam CSB 2 and 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% | 16,607 psi | 85% | 741 fps | 98% |
| Accurate Solo 1250* | <<locked>> | 88% | 17,216 psi | 88% | 784 fps | 92.2% |
| ADI AP 70N*² | <<locked>> | 72% | 17,303 psi | 88% | 804 fps | 93.5% |
| ADI APS 350² | <<locked>> | 64% | 16,607 psi | 85% | 679 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 16,157 psi | 83% | 696 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 16,650 psi | 85% | 741 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 16,520 psi | 84% | 755 fps | 97.5% |
| Alliant BE-86* | <<locked>> | 84% | 15,940 psi | 81% | 771 fps | 94.2% |
| Alliant Green Dot | <<locked>> | 80% | 17,622 psi | 90% | 778 fps | 98.2% |
| Alliant RED DOT² | <<locked>> | 76% | 16,302 psi | 83% | 751 fps | 99.9% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 17,376 psi | 89% | 764 fps | 96.6% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 15,461 psi | 79% | 768 fps | 97.5% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 17,260 psi | 88% | 797 fps | 97.6% |
| Hodgdon CFE Pistol*² | <<locked>> | 64% | 17,608 psi | 90% | 804 fps | 91.2% |
| Hodgdon Clays² | <<locked>> | 76% | 16,650 psi | 85% | 705 fps | 100% |
| Hodgdon TrailBoss*ᴾ | <<locked>> | 100% | 6,918 psi | 35% | 535 fps | 89.3% |
| Hodgdon Universal* | <<locked>> | 80% | 17,303 psi | 88% | 804 fps | 93.5% |
| Lovex S011*² | <<locked>> | 64% | 16,607 psi | 85% | 745 fps | 93.4% |
| Lovex S020* | <<locked>> | 80% | 16,389 psi | 84% | 781 fps | 86.8% |
| Maxam CSB 1* | <<locked>> | 92% | 17,550 psi | 90% | 787 fps | 92.7% |
| Maxam CSB 2 | <<locked>> | 96% | 17,231 psi | 88% | 840 fps | 98.1% |
| Maxam CSB 3 | <<locked>> | 84% | 17,550 psi | 90% | 784 fps | 96.9% |
| Maxam CSB 4² | <<locked>> | 76% | 15,809 psi | 81% | 748 fps | 98% |
| Maxam CSB 5² | <<locked>> | 72% | 16,317 psi | 83% | 745 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 16,694 psi | 85% | 830 fps | 99.3% |
| Rottweil P 801² | <<locked>> | 72% | 16,476 psi | 84% | 797 fps | 99.9% |
| SNPE Vectan A1*² | <<locked>> | 76% | 16,621 psi | 85% | 755 fps | 93.5% |
| SNPE Vectan BA 9*² | <<locked>> | 76% | 15,925 psi | 81% | 738 fps | 88.1% |
| SNPE Vectan BA10² | <<locked>> | 64% | 17,695 psi | 90% | 719 fps | 100% |
| SNPE Vectan BA9 1/2* | <<locked>> | 80% | 16,766 psi | 86% | 774 fps | 91.5% |
| Vihtavuori N320 | <<locked>> | 80% | 17,434 psi | 89% | 801 fps | 99.1% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 11,661 psi | 60% | 682 fps | 99.9% |
| Vihtavuori N330* | <<locked>> | 84% | 16,708 psi | 85% | 807 fps | 93.7% |
| Winchester 231*² | <<locked>> | 64% | 15,563 psi | 79% | 745 fps | 92.3% |
| Winchester AutoComp * | <<locked>> | 88% | 16,607 psi | 85% | 781 fps | 90.2% |
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% | 11,574 psi | 59% | 636 fps | 93.5% |
| Accurate Solo 1250*² | <<locked>> | 76% | 13,576 psi | 69% | 712 fps | 88.2% |
| ADI AP 70N*² | <<locked>> | 60% | 11,763 psi | 60% | 682 fps | 86.9% |
| ADI APS 350² | <<locked>> | 60% | 14,953 psi | 76% | 653 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 13,314 psi | 68% | 650 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 11,458 psi | 59% | 636 fps | 97.9% |
| ADI AS 50N*² | <<locked>> | 60% | 11,705 psi | 60% | 653 fps | 92.8% |
| Alliant BE-86*² | <<locked>> | 68% | 10,109 psi | 52% | 643 fps | 86.5% |
| Alliant Green Dot*² | <<locked>> | 60% | 10,588 psi | 54% | 627 fps | 91.3% |
| Alliant RED DOT² | <<locked>> | 60% | 11,240 psi | 57% | 646 fps | 97.2% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 10,341 psi | 53% | 620 fps | 88.8% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 72% | 7,905 psi | 40% | 581 fps | 86.4% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 9,558 psi | 49% | 630 fps | 88.7% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 15,345 psi | 78% | 758 fps | 88.8% |
| Hodgdon Clays² | <<locked>> | 60% | 11,313 psi | 58% | 607 fps | 99.9% |
| Hodgdon TrailBoss* | <<locked>> | 92% | 5,831 psi | 30% | 492 fps | 85.8% |
| Hodgdon Universal*² | <<locked>> | 64% | 10,878 psi | 56% | 659 fps | 85.3% |
| Lovex S011*² | <<locked>> | 60% | 14,025 psi | 72% | 696 fps | 90.7% |
| Lovex S020*² | <<locked>> | 76% | 15,185 psi | 78% | 758 fps | 85.5% |
| Maxam CSB 1*² | <<locked>> | 76% | 11,951 psi | 61% | 673 fps | 86% |
| Maxam CSB 2*² | 2.2 gr | 68% | 9,050 psi | 46% | 650 fps | 87.8% |
| Maxam CSB 3*² | <<locked>> | 60% | 9,645 psi | 49% | 614 fps | 87.5% |
| Maxam CSB 4*² | <<locked>> | 60% | 10,994 psi | 56% | 646 fps | 93.3% |
| Maxam CSB 5² | <<locked>> | 60% | 12,140 psi | 62% | 666 fps | 99.7% |
| ReloadSwiss RS 12*² | <<locked>> | 60% | 9,166 psi | 47% | 659 fps | 92% |
| Rottweil P 801² | <<locked>> | 60% | 11,835 psi | 60% | 705 fps | 98% |
| SNPE Vectan A1*² | <<locked>> | 60% | 11,414 psi | 58% | 646 fps | 87.1% |
| SNPE Vectan BA 9*² | <<locked>> | 68% | 13,764 psi | 70% | 696 fps | 85.4% |
| SNPE Vectan BA10² | <<locked>> | 60% | 14,692 psi | 75% | 673 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 68% | 12,372 psi | 63% | 682 fps | 86% |
| Vihtavuori N320*² | <<locked>> | 60% | 10,109 psi | 52% | 646 fps | 92.4% |
| Vihtavuori N32C Tin Star*² | 1.4 gr | 60% | 4,960 psi | 25% | 463 fps | 88% |
| Vihtavuori N330*² | <<locked>> | 68% | 11,327 psi | 58% | 686 fps | 86.2% |
| Winchester 231*² | <<locked>> | 60% | 14,402 psi | 74% | 722 fps | 91% |
| Winchester AutoComp *² | <<locked>> | 76% | 12,589 psi | 64% | 699 fps | 85.2% |
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 .380 ACP loaded with the .357 | 125gr | Speer JHP. Maxam CSB 2 delivers the highest muzzle velocity at 840 fps; across all powders the maximum-charge window runs from 535 fps to 840 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 18 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 35–90 %, leaving at least 10 % headroom. Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss, 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. Maxam CSB 2, Vihtavuori N32C Tin Star rank at the top here: for .380 ACP with the .357 | 125gr | Speer JHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate Solo 1250, ADI AP 70N, Alliant BE-86 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1000, Accurate Solo 1250, ADI AP 70N 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.