Shot another 100 of WWB and Fiocchi - no problems. The dealer took back my remaining 450 rounds of Prvi. Out of a box of 50, there were 12 rounds that did not fire and 6 of those did not fire on the 3rd and 4th trigger pull. Same problems with my Kel Tec P3AT and Colt Pony. Unfortunately all they had in .380 was PRVI so they refunded the cost of the remaining 450 rounds.
Chris