I'm new to reloading but I've probably sized 500 cases and never had this happen and it happened to every one of the 100 cases I sized today. I'm referring to the donut in the neck. It's a once fired Hornady 260 resized using a FL Redding type s with a 287 bushing (no expander ball) . I understand the concept of using too much lube can cause problems but im not using any more than i have in the past.