Different people tend to view pressure signs very differently. Some people only use a visual examination of the case after the first firing. Some people measure case head expansion after the first firing or two. A few people also pay close attention to the resistence when seating primers for at least five or six loadings. Tests done in ballistics labs have determined that the obvious pressure signs that most people look for, are not easily seen until the chamber pressure is in the 70,000-80,000 psi range. I know people that are happy if they can get three or four loadings out of their brass, yet I load some brass over a dozen times.
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