I have a set of Dillon 9mm dies. They are old, like 15+ years, and over 60K through them. Every now and again, I clean them, and measure what the sizing die is doing. I also run every round through a Dillon case gauge. They don't skip a beat. Dillon is a little back ordered as of the first of the year. Needed some small parts for my XL650, took about 2 months. But every other time in the last 15+ years, they have been Johnny on the spot. J