I guess it was just my luck, but the .380 Auto has been the biggest reloading challenge in my nearly 40 years of reloading. Resizing and all went well, it was belling the cases that turned out to be a major pain for me. I tried belling dies from several manufacturers and would wind up with a bulge just about where the bullet base would be. I had a few that would barely chamber. Finally I went a LEE Universal Expander and that worked fine. I also found that my Dillon 9mm expander die would work also.
In answer to your question, I read a ton of threads on 380 Auto brass looking for answers. It's hard to beat Win, RP, PMC or Fed. My particular 380 (A Kahr) was ammunition sensitive and prone to jamming. After a lot of reading about people replacing extractors or modifying them, I discovered the answer to my particular gun. As 35remington stated above in his post "properly sized extractor groove cut", and measure the case rim thickness. I would personally just remove the slide for cleaning and see what brand(s) seem to slip into the extractor groove with ease. Perhaps load 15-20 each and see if they cycle properly. I started with a KelTec P3AT and swapped out for the Kahr. I had already figured out the problems mentioned above before buying a Kahr. I've not had a single bobble with the Kahr new out of the box.
Best of luck finding what works best for you.
Murphy