Depending on how hot they are and other variables its hard tell.I as a general rule get about 10 reloads when i full length resize and between 15-20 with neck size.I anneal the cases after about the ninth or tenth reload.I check them VARY carefull everytime i clean the cases.If i get 1 out of a batch of 100 that cracks in the head area i toss the whole batch.