Small Pistol primers and fast burning powders. Bullseye, HP-38, 231, Titegroup. Pay attention to C.O.L. In my experiance 380s tend to work most reliably when loaded to the shortest practical overall lengths.
Your results may, of course, vary!
Mark Lane to William Buckley: "Have you ever referred to Jessee Jackson as an ignoramus?"
Buckley: "If I didn't, I should have"