I was just reading about case stretching. It’s the first time I’ve heard of it. Do many people do it? What is the advantage? Does it keep the case thicker at the mouth so it lasts longer ? I assume it pulls brass from the Center or lower of the case. In a video it said the brass needs to be annealed. Is there a risk of the base getting too soft when you start annealing that far down ? When and how often should you do it?
Thanks