I guess my question is: 1. When do you decide it's time to anneal or do you just fire it "X" amount of times and anneal because you think you should ? 2. Is it possible for some pieces brass of the same batch to harden quicker than others? ( I suppose anything is possible) I have some Hornady 300 WM brass. Not loaded to extremes. With just a bit of time behind me I have noticed some seat easier than others ( same bullet). The difference is slight but it can be felt. I'm using forester dies set for .002 tension. This brass all has been fired 4 times and a annealing machine is on the way. My process is not as stringent as some and more than others. I de-prime resize, media tumble and trim, .002 out of trim and I'm on it. I chamfer only when brass is new or gets trimmed. I've not used graphite powder yet although I bought some from the local hardware to try. My cleaning process seems to leave carbon in the necks that I've read helps make for consistency. So I put my stainless pin cleaner away. I've also noticed at times the upstroke of the handle on the Blue machine has some bounce back of few pieces during the upstroke during resizing. As if the brass was springing back or has hardened and has memory. Or maybe I'm just imagining that.