I'm not totally sure on that. I know that AXI mentions in one video they got a gun back with 80,000 rounds through it with no discernable degradation of slide to frame fit or accuracy. I haven't seen one of their barrel fits, but I'd assume it's pretty solid. Your average Wilson or NHC? Probably might start to lose a little bit of accuracy around the 40-50k round count mark. That being said, if you did have a gun with that high of round count and started to lose accuracy, WC or NHC would likely rebuild it for you under warranty. I've at least heard of WC doing so in a few cases. I agree that doing it right is preferred. But that's not to say some of the other shops are doing it wrong. They're building guns for a different purpose usually, and many shooters don't like that initial hard lock-up of some of the super-tight tolerance guns. It's just a different methodology. Ed Brown used to say 'tight doesn't mean it's right" in his FAQ section. Of course, he also said never shoot a gun to slide lock, at least in competition. Every builder has their nuances and beliefs on the best way to do something.