I have between 300 and 400 rounds through mine. Initially, the slide locked up prior to picking up a new round to chamber. Did this with several different brands of ammo, even switched magazines. I found a burr where the slide mates with the rail. Buffed it out and have had no problems of any kind since.
I have fired the number of rounds indicated, most after I buffed out the burr, mainly to develope confidence in the pistol. I trust it and carry it now.