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<blockquote data-quote="19elkhunter51" data-source="post: 1678330" data-attributes="member: 14169"><p>I don't crimp any of my rifle cartridges. 22-250, 243, 25-06, 30-06, 300 WM, 300 RUM and 338 Edge. When I first started reloading my rifle cartridges vacillated over crimp/no crimp. At that time most of what I read indicated that no crimp yielded the best accuracy. I like that thought. I did measure a lot of last round in the magazine cartridges. Never found any that had moved in an amount that I could measure with a caliper or micrometer. I don't bother to measure any more. One thing that I do to help consistency in neck tension is use Imperial graphite powder on the inside of the necks of my cases.</p><p>Pistol cartridges are the same. I was a competitive shooter for a long time and NEVER had a bullet move forward to stop the cylinder. Just my experience and your mileage may vary. When I was shooting a lot, I reloaded right at or slightly more than ten thousand rounds of 38 and 45 combined. I usually had one or two problems a year with my pistol cartridges and most of those involved a primer upside down in the case. </p><p>I have recently started shooting two of the most inaccurate rifles I have ever owned. One is an AR 15 and the other is an LR 10. I am just starting to load for those two rifles and I am strongly considering using a crimp on the cartridges. I believe that there is no room for a malfunction in these two weapons and to the extent possible I want these to be more reliable than accurate. I believe these two rifles only need to be accurate to three hundred yards and that accuracy is not as small as the the area of a game animal.</p></blockquote><p></p>
[QUOTE="19elkhunter51, post: 1678330, member: 14169"] I don't crimp any of my rifle cartridges. 22-250, 243, 25-06, 30-06, 300 WM, 300 RUM and 338 Edge. When I first started reloading my rifle cartridges vacillated over crimp/no crimp. At that time most of what I read indicated that no crimp yielded the best accuracy. I like that thought. I did measure a lot of last round in the magazine cartridges. Never found any that had moved in an amount that I could measure with a caliper or micrometer. I don't bother to measure any more. One thing that I do to help consistency in neck tension is use Imperial graphite powder on the inside of the necks of my cases. Pistol cartridges are the same. I was a competitive shooter for a long time and NEVER had a bullet move forward to stop the cylinder. Just my experience and your mileage may vary. When I was shooting a lot, I reloaded right at or slightly more than ten thousand rounds of 38 and 45 combined. I usually had one or two problems a year with my pistol cartridges and most of those involved a primer upside down in the case. I have recently started shooting two of the most inaccurate rifles I have ever owned. One is an AR 15 and the other is an LR 10. I am just starting to load for those two rifles and I am strongly considering using a crimp on the cartridges. I believe that there is no room for a malfunction in these two weapons and to the extent possible I want these to be more reliable than accurate. I believe these two rifles only need to be accurate to three hundred yards and that accuracy is not as small as the the area of a game animal. [/QUOTE]
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