BH- I do anneal after 2-3 firings. I'm using Winchester brass. I'm on the tenth firing for the brass and all seems well. I just wondered if there was a way to measure the case wall near the base? If there is a method, how thin is too thin?
Jim- that link isn't working for me was it for the RCBS casemaster gauging tool?
BH- If there is no thinning of the walls how do you conclude it no longer useful. It can't last forever. Does it just get to the point you can't anneal it? (it won't become flexible anymore)
I'm probably not FL sizing right anyway. More often than not after I anneal and size I find my case necks have stretched out and need trimmed to be uniform again.