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Message: <blockquote data-quote="oldngray" data-source="post: 3501602" data-attributes="member: 45230"><p>It depends. Straight wall pistol cartridges many many times. Bottleneck rifle cartridges operate at higher pressure and stretch more so fewer times. As they stretch the case gets longer so sometimes need to be trimmed. That brass comes from somewhere and its the case walls getting thinner. The general rule is to discard after the 3rd trimming. Still will usually get many times reloading from them. Plus you need to check the brass for signs of weak spots and toss out any you aren't sure about.</p></blockquote><p></p>