I'm well over 500 rounds with my new 45 ACP Shield as of yesterday. It's never failed. Numerous factory brands, and reloads. My wife even put a hole through the bullseye with her first shot with it, yesterday. She has a Glock 43 and Smith & Wesson Model 60 357/38 Special.

I even went to the trouble of loading the mags, without a loader. Stiffer than initial loads, such as a 15 capacity XDM 45, but doable. They do loosen up. I've also owned a 9mm Shield for around a year and a half. I trust it very much. It, and the Glock just keep going.