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The Basics, Starting Out
7PRC - Peterson brass - Redding bushing?
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<blockquote data-quote="CanisLupus" data-source="post: 2839832" data-attributes="member: 119041"><p>I'm not expecting my Peterson brass to arrive until Aug so I can't answer from experience. However, the easiest way I find is by measuring the O.D. of the neck with a bullet seated. Then, I use a bushing that is 0.004-inch smaller than that measured O.D. … I use an expander mandrel before seating bullets, so going 0.004-inch smaller gives a little something in the neck for the mandrel to expand. If you're not using a mandrel before seating bullets, get a bushing that is 0.002-inch smaller than your measured neck O.D. with a bullet seated, or whatever your desired 'neck tension' is.</p></blockquote><p></p>
[QUOTE="CanisLupus, post: 2839832, member: 119041"] I’m not expecting my Peterson brass to arrive until Aug so I can’t answer from experience. However, the easiest way I find is by measuring the O.D. of the neck with a bullet seated. Then, I use a bushing that is 0.004-inch smaller than that measured O.D. … I use an expander mandrel before seating bullets, so going 0.004-inch smaller gives a little something in the neck for the mandrel to expand. If you’re not using a mandrel before seating bullets, get a bushing that is 0.002-inch smaller than your measured neck O.D. with a bullet seated, or whatever your desired ‘neck tension’ is. [/QUOTE]
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7PRC - Peterson brass - Redding bushing?
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