To give the history on the brass it was given to me. I don’t know how many times it was fired previously and how old it he brass is. I annealed all the brass about 2-3 firings ago. I am bumping the shoulders back approx 3000 th’s. They are all RP cases. I trim the necks every time back to minimum length as most have grown during firing. I have fired them in two different BCA 243 uppers. They have been sized each time in my small base RCBS sizer die. Is the brass getting worked that much after 2 to 3 firings that they are cracking already? It seemed after every firing I’ve been loosing around 3 to …or more, out of maybe 50 to 60 casings, to neck cracking. I would assume I need to Anneal them again…maybe after every firing? I have shot 243 RP casings umpteen times my bolt actions and can’t recall have a cracked neck in any of them.
I have the rest prepped ready to load. I’m wondering if I should anneal them before I prime and load? I always anneal before sizing the brass so it’s kinda backwards. Just wondering if it will save a few cases by doing so?