Getting back to the original post, I reload for both of my .380's. One is a Bersa Thunder and the other is the Kel-Tec. I typically use cast RN but have used cast truncated cone as well. Both fed well. As in any Semi-Auto OAL is important, as is minimum power levels. Too light will not cycle the action properly, but you probably already know that. My personal recipe is 3.0 gr of AA#2, but it seems to me I've used Bullseye as well, I'm not sure.
My handloads are for range use only, for carry I use Hydra-Shoks in the Bersa and Golden Sabers in the K-T. I'll not comment on the legal aspect of reloads since I'm no lawyer and it's been beaten to death already.
Cast bullets are a great way to save money and increase your practice time, and reloading the .380 is very staightforward. With a 3 gr powder charge you'll get over 2300 rounds out of a pound of powder. The worse part about reloading for any auto is recovering your brass, the KT has a top eject that tends to launch the empty cases high in the air and it's easy to lose them. The Bersa has a side eject but it's not much better.
GH1