Bought the pistol a few weeks ago and have sent 481 rounds down range to date. Toward the end of the 200 round break-in day on 13 Feb, the pistol was dirty after 100 rounds of WWB, 15 rounds of S&B, and lastly 100 rounds of Aquila. The last round in the last three mags of Aquila failed to feed. Gave it a good cleaning and started again. Of the next 120 rounds I had one Remington GS fail to feed, last round in the mag, and the remaining rounds all fed. These rounds included Speer Gold Dot, Remington GS, Hydra Shock, PMC Starfire, Wold Gold 94 Grain JHP and Hornady JHP. By then it was time to quit as the right side of my trigger finger, already warped by arthritis had been skinned up and band aid wasn't helping much. Went back out on the 16th and put another 84 rounds down range. Fired 16 rounds of Fiochi 90 grain JHP and had numerous failure to feed problems. Then tried five Hornady JHPs as they both appear to use the same 90 grain XTP round and these fed fine. Also fired some Win Silvertips with no problems. Got back home and compared the Hornady and Fiochi JHP and found that the OAL of the Fiochi rounds was just a bit longer and that is probably the cause of all the feeding failures. Hornady measured and average of 0.9574 in. and the Fiochi measured an average of 0.9645 inches. Might add here that the Fiochi feed fine in my LCP. Back out on the 25th and put 62 rounds of Rainier hand loads and six each rounds of GS and Gold Dot down range with no problems. With that final break in, I consider my P380 broken in and good to carry.