Load Specifications
Load data in caliber .380 ACP with .356 | 100gr | Rim Rock FP bullet and 32 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>> | 76% | 17,042 psi | 87% | 883 fps | 96.9% |
| Accurate Solo 1250* | <<locked>> | 88% | 17,303 psi | 88% | 922 fps | 90% |
| ADI AP 70N*² | <<locked>> | 72% | 16,331 psi | 83% | 919 fps | 90.3% |
| ADI APS 350² | <<locked>> | 68% | 17,274 psi | 88% | 820 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 16,259 psi | 83% | 830 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 17,347 psi | 89% | 892 fps | 99.8% |
| ADI AS 50N² | <<locked>> | 72% | 15,534 psi | 79% | 869 fps | 95.1% |
| Alliant BE-86* | <<locked>> | 88% | 17,347 psi | 89% | 935 fps | 93.3% |
| Alliant Green Dot | <<locked>> | 80% | 17,550 psi | 90% | 915 fps | 96.7% |
| Alliant RED DOT | <<locked>> | 80% | 17,056 psi | 87% | 902 fps | 99.5% |
| Baschieri & Pellagri 100* | <<locked>> | 80% | 16,737 psi | 85% | 889 fps | 94.4% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 14,721 psi | 75% | 886 fps | 95.1% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 17,376 psi | 89% | 938 fps | 96% |
| Hodgdon CFE Pistol*² | <<locked>> | 64% | 16,795 psi | 86% | 922 fps | 87.8% |
| Hodgdon Clays² | <<locked>> | 68% | 17,303 psi | 88% | 830 fps | 100% |
| Hodgdon Universal* | <<locked>> | 80% | 16,331 psi | 83% | 919 fps | 90.3% |
| Lovex S011*² | <<locked>> | 68% | 17,709 psi | 90% | 899 fps | 92.4% |
| Maxam CSB 1* | <<locked>> | 92% | 17,390 psi | 89% | 922 fps | 90.3% |
| Maxam CSB 2 | <<locked>> | 96% | 17,564 psi | 90% | 994 fps | 96.7% |
| Maxam CSB 3* | <<locked>> | 84% | 17,013 psi | 87% | 912 fps | 94.8% |
| Maxam CSB 4 | <<locked>> | 80% | 17,042 psi | 87% | 909 fps | 97.3% |
| Maxam CSB 5² | <<locked>> | 72% | 17,027 psi | 87% | 896 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 17,506 psi | 89% | 991 fps | 98.6% |
| Rottweil P 801² | <<locked>> | 72% | 16,737 psi | 85% | 945 fps | 99.5% |
| SNPE Vectan A1*² | <<locked>> | 76% | 16,708 psi | 85% | 889 fps | 91.4% |
| SNPE Vectan BA10² | <<locked>> | 64% | 16,244 psi | 83% | 827 fps | 100% |
| SNPE Vectan BA9 1/2* | <<locked>> | 80% | 15,824 psi | 81% | 889 fps | 88.1% |
| Vihtavuori N320 | <<locked>> | 80% | 16,752 psi | 86% | 928 fps | 97.5% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 11,385 psi | 58% | 797 fps | 99.1% |
| Vihtavuori N330* | <<locked>> | 84% | 17,347 psi | 89% | 961 fps | 91.9% |
| Winchester 231*² | <<locked>> | 68% | 17,056 psi | 87% | 909 fps | 91.5% |
| Winchester AutoComp * | <<locked>> | 88% | 16,549 psi | 85% | 915 fps | 87.7% |
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% | 11,806 psi | 60% | 755 fps | 91.6% |
| Accurate Solo 1250* | <<locked>> | 80% | 14,170 psi | 72% | 850 fps | 86.3% |
| ADI AP 70N*² | <<locked>> | 64% | 13,503 psi | 69% | 850 fps | 86.8% |
| ADI APS 350² | <<locked>> | 60% | 14,518 psi | 74% | 771 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 13,866 psi | 71% | 781 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 10,936 psi | 56% | 738 fps | 95.8% |
| ADI AS 50N*² | <<locked>> | 60% | 11,690 psi | 60% | 768 fps | 90.6% |
| Alliant BE-86*² | <<locked>> | 72% | 11,226 psi | 57% | 787 fps | 85.6% |
| Alliant Green Dot*² | <<locked>> | 60% | 10,733 psi | 55% | 741 fps | 89.1% |
| Alliant RED DOT*² | <<locked>> | 60% | 10,660 psi | 54% | 745 fps | 94.7% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 10,196 psi | 52% | 722 fps | 86% |
| Baschieri & Pellagri 102 Pistol* | <<locked>> | 80% | 9,007 psi | 46% | 722 fps | 86.1% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 9,529 psi | 49% | 738 fps | 85.8% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 14,924 psi | 76% | 879 fps | 85.6% |
| Hodgdon Clays² | <<locked>> | 60% | 14,518 psi | 74% | 781 fps | 100% |
| Hodgdon Universal*² | <<locked>> | 72% | 13,503 psi | 69% | 850 fps | 86.8% |
| Lovex S011*² | <<locked>> | 60% | 14,417 psi | 74% | 827 fps | 88.8% |
| Maxam CSB 1* | <<locked>> | 80% | 13,547 psi | 69% | 833 fps | 85.7% |
| Maxam CSB 2*² | <<locked>> | 72% | 9,718 psi | 50% | 784 fps | 86.2% |
| Maxam CSB 3*² | <<locked>> | 64% | 10,399 psi | 53% | 745 fps | 86.2% |
| Maxam CSB 4*² | <<locked>> | 60% | 10,167 psi | 52% | 735 fps | 89.6% |
| Maxam CSB 5² | <<locked>> | 60% | 11,313 psi | 58% | 768 fps | 98.4% |
| ReloadSwiss RS 12*² | <<locked>> | 60% | 8,688 psi | 44% | 751 fps | 87.9% |
| Rottweil P 801² | <<locked>> | 60% | 11,023 psi | 56% | 807 fps | 95.4% |
| SNPE Vectan A1*² | <<locked>> | 64% | 12,328 psi | 63% | 784 fps | 85.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 15,011 psi | 77% | 804 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 76% | 14,852 psi | 76% | 866 fps | 86.9% |
| Vihtavuori N320*² | <<locked>> | 60% | 9,906 psi | 51% | 751 fps | 89.4% |
| Vihtavuori N32C Tin Star*² | 1.8 gr | 64% | 5,250 psi | 27% | 558 fps | 86.1% |
| Vihtavuori N330*² | <<locked>> | 76% | 13,445 psi | 69% | 866 fps | 86.9% |
| Winchester 231*² | <<locked>> | 60% | 13,227 psi | 68% | 820 fps | 87% |
| Winchester AutoComp * | <<locked>> | 84% | 14,808 psi | 76% | 876 fps | 85.6% |
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 32 powders for .380 ACP loaded with the .356 | 100gr | Rim Rock FP. Maxam CSB 2 delivers the highest muzzle velocity at 994 fps; across all powders the maximum-charge window runs from 797 fps to 994 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 18 of the 32 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (135 MPa), the top charges use 58–90 %, leaving at least 10 % 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 .356 | 100gr | Rim Rock FP 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.