SIG P228
When my agency transitioned from revolvers to auto pistol, the handgun used for that move, and subsequently issued to all LEO's in the early stage of the process, was the SIG P228.
The first step was to train a cadre of instructors with the pistol, then have the cadre conduct transition classes throughout the agency across the country. The cadre class was 5 days, with about 3+ days of shooting, the line transition classes we then conducted typically went 3, shooting for all 3. The goal was 1000 rds per each shooter. The agency had acquired a boatload of NATO 124 gr FMJ, W-W mfg.
Day 1, we were lectured, issued factory new pistols, field stripped, cleaned and lubed them, shooting started the next day. Over the next 3 days, I likely saw 24, 000 plus rounds fired, and shot over 1000 myself. The pistols were cleaned and lubed after each day. Over that time, I saw 2 failures to feed, with JHP ammo during a final qualification course....both from the same pistol, and the shooter admitted he had not cleaned and lubed the evening previous.
In the two following classes that I conducted or assisted on elsewhere, I likely witnessed 20,000 rounds fired, with NO failures from any pistols. As the P228 began to see field service with bi annual qualifications and assorted training, the reliablility continued.
I was much impressed, as my experience with SA was rather limited at the time (early 90's) and not overly positive. The P228's ran like sewing machines.