Load Specifications
Load data in caliber .380 ACP with .355 | 121gr | Frontier Bullets CMJ FP atch bullet and 34 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% | 16,404 psi | 84% | 719 fps | 96.8% |
| Accurate Solo 1250* | <<locked>> | 88% | 17,579 psi | 90% | 774 fps | 90.8% |
| ADI AP 70N*² | <<locked>> | 68% | 15,867 psi | 81% | 751 fps | 90.3% |
| ADI APS 350² | <<locked>> | 64% | 17,405 psi | 89% | 679 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 17,129 psi | 87% | 699 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 16,795 psi | 86% | 725 fps | 99.8% |
| ADI AS 50N² | <<locked>> | 72% | 16,940 psi | 87% | 741 fps | 96.6% |
| Alliant BE-86* | <<locked>> | 84% | 16,781 psi | 86% | 771 fps | 93.4% |
| Alliant Green Dot² | <<locked>> | 76% | 16,795 psi | 86% | 741 fps | 96.6% |
| Alliant RED DOT² | <<locked>> | 76% | 16,505 psi | 84% | 735 fps | 99.5% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 17,608 psi | 90% | 751 fps | 95.5% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 15,243 psi | 78% | 748 fps | 96.1% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 17,245 psi | 88% | 784 fps | 96.4% |
| Hodgdon CFE Pistol*² | <<locked>> | 64% | 17,318 psi | 88% | 778 fps | 89% |
| Hodgdon Clays² | <<locked>> | 76% | 16,244 psi | 83% | 686 fps | 100% |
| Hodgdon TrailBoss*ᴾ | <<locked>> | 100% | 7,890 psi | 40% | 535 fps | 89.9% |
| Hodgdon Universal*² | <<locked>> | 76% | 15,867 psi | 81% | 751 fps | 90.3% |
| Lovex S011*² | <<locked>> | 64% | 16,607 psi | 85% | 728 fps | 91.8% |
| Maxam CSB 1* | <<locked>> | 88% | 16,853 psi | 86% | 758 fps | 90.3% |
| Maxam CSB 2 | <<locked>> | 92% | 16,708 psi | 85% | 817 fps | 96.7% |
| Maxam CSB 3* | <<locked>> | 80% | 16,520 psi | 84% | 748 fps | 94.8% |
| Maxam CSB 4² | <<locked>> | 76% | 17,172 psi | 88% | 758 fps | 97.8% |
| Maxam CSB 5² | <<locked>> | 72% | 17,506 psi | 89% | 751 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 17,564 psi | 90% | 827 fps | 99% |
| Rottweil P 801² | <<locked>> | 72% | 17,347 psi | 89% | 794 fps | 99.8% |
| SNPE Vectan A1*² | <<locked>> | 76% | 17,042 psi | 87% | 748 fps | 92.3% |
| SNPE Vectan BA 9*² | <<locked>> | 76% | 16,476 psi | 84% | 728 fps | 86.7% |
| SNPE Vectan BA10² | <<locked>> | 64% | 17,114 psi | 87% | 699 fps | 100% |
| SNPE Vectan BA9 1/2* | <<locked>> | 80% | 17,405 psi | 89% | 768 fps | 90.3% |
| Vihtavuori N320 | <<locked>> | 80% | 17,550 psi | 90% | 787 fps | 98.3% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 12,488 psi | 64% | 679 fps | 99.8% |
| Vihtavuori N330* | <<locked>> | 84% | 17,303 psi | 88% | 801 fps | 92.4% |
| Winchester 231*² | <<locked>> | 64% | 15,954 psi | 81% | 735 fps | 90.9% |
| Winchester AutoComp * | <<locked>> | 88% | 17,637 psi | 90% | 784 fps | 89.4% |
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% | 12,647 psi | 65% | 640 fps | 93.3% |
| Accurate Solo 1250*² | <<locked>> | 72% | 12,923 psi | 66% | 676 fps | 85.2% |
| ADI AP 70N*² | <<locked>> | 60% | 13,764 psi | 70% | 705 fps | 87.8% |
| ADI APS 350² | <<locked>> | 60% | 15,679 psi | 80% | 653 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 14,170 psi | 72% | 650 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 12,894 psi | 66% | 646 fps | 98.1% |
| ADI AS 50N*² | <<locked>> | 60% | 13,198 psi | 67% | 663 fps | 93.1% |
| Alliant BE-86*² | <<locked>> | 68% | 11,806 psi | 60% | 663 fps | 87.4% |
| Alliant Green Dot*² | <<locked>> | 60% | 12,067 psi | 62% | 636 fps | 91.7% |
| Alliant RED DOT² | <<locked>> | 60% | 11,516 psi | 59% | 627 fps | 96.2% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 10,820 psi | 55% | 607 fps | 87.7% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 68% | 8,282 psi | 42% | 561 fps | 85.1% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 10,530 psi | 54% | 636 fps | 88.6% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 16,317 psi | 83% | 758 fps | 88% |
| Hodgdon Clays² | <<locked>> | 60% | 12,227 psi | 62% | 610 fps | 99.9% |
| Hodgdon TrailBoss* | <<locked>> | 80% | 6,411 psi | 33% | 472 fps | 85.7% |
| Hodgdon Universal*² | <<locked>> | 64% | 12,792 psi | 65% | 679 fps | 86.3% |
| Lovex S011*² | <<locked>> | 60% | 15,287 psi | 78% | 702 fps | 90.4% |
| Maxam CSB 1*² | <<locked>> | 76% | 13,489 psi | 69% | 686 fps | 86.2% |
| Maxam CSB 2*² | 1.9 gr | 64% | 9,282 psi | 47% | 627 fps | 85.9% |
| Maxam CSB 3*² | <<locked>> | 60% | 10,965 psi | 56% | 623 fps | 88% |
| Maxam CSB 4*² | <<locked>> | 60% | 11,211 psi | 57% | 627 fps | 92% |
| Maxam CSB 5² | <<locked>> | 60% | 13,271 psi | 68% | 673 fps | 99.7% |
| ReloadSwiss RS 12*² | <<locked>> | 60% | 10,109 psi | 52% | 659 fps | 91.9% |
| Rottweil P 801² | <<locked>> | 60% | 12,720 psi | 65% | 702 fps | 97.7% |
| SNPE Vectan A1*² | <<locked>> | 60% | 11,922 psi | 61% | 636 fps | 86% |
| SNPE Vectan BA 9*² | <<locked>> | 72% | 15,258 psi | 78% | 705 fps | 85.3% |
| SNPE Vectan BA10² | <<locked>> | 60% | 15,606 psi | 80% | 676 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 72% | 14,040 psi | 72% | 699 fps | 86.4% |
| Vihtavuori N320*² | <<locked>> | 60% | 10,530 psi | 54% | 633 fps | 91.2% |
| Vihtavuori N32C Tin Star*² | 1.3 gr | 60% | 6,469 psi | 33% | 486 fps | 91.7% |
| Vihtavuori N330*² | <<locked>> | 72% | 12,908 psi | 66% | 702 fps | 86.7% |
| Winchester 231*² | <<locked>> | 60% | 14,837 psi | 76% | 712 fps | 89.7% |
| Winchester AutoComp * | <<locked>> | 80% | 14,562 psi | 74% | 722 fps | 85.9% |
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 34 powders for .380 ACP loaded with the .355 | 121gr | Frontier Bullets CMJ FP atch. ReloadSwiss RS 12 delivers the highest muzzle velocity at 827 fps; across all powders the maximum-charge window runs from 535 fps to 827 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 15 of the 34 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (135 MPa), the top charges use 40–90 %, 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 .355 | 121gr | Frontier Bullets CMJ FP atch 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.