I have been running 2 100-round boxes of Lapua Palma brass for about four years of max loadings and finally, after 20 firings, they started showing small neck cracks. But only on about 20% of them. I am not an annealing junkie - I annealed every 5 firings. Primer pockets remain tight. I imagine if I had annealed every 4 firings they would have gone longer but I am very happy with the longevity attained. And yes, I know many anneal every firing. I'm not that guy.