I've been with my agency for almost exactly 12 years now. Our issue weapon is the P229 in .357SIG with the standard DA/SA trigger.
My first P229 went 38,512 rounds with only one malfunction that wasn't due to bad ammo; my decocking lever spring broke at around round #32,800. Nothing that would stop you in a gunfight, though. She was a bit rattly at the end, more gray than black, and my groups had opened up a bit (flame cutting in the barrel throat that you could see with the naked eye, for one), but she still turned in perfect 300 scores during qual.
My second P229 went 38,846 rounds before she was surveyed for a replacement. No stoppages or malfunctions that were not caused by faulty ammo. About halfway through her service life an SRT kit was installed.
I'm on my third P229 now, with the SRT from Day 1. She has 8,684 rounds through her. The hook broke off my extractor at round #7,595 exactly. Other than that, no issues so far.
The majority of rounds fired have been Speer Gold Dot 125grn and Speer 100grn frangible. On my first P229, there was a bit of Speer Lawman 125grn TMJ as well.
Anyways, I was looking through my round count logs tonight and thought I would share this information.
Semper Fi!