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The Basics, Starting Out
Semi auto advice needed
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<blockquote data-quote="cajun" data-source="post: 2712382" data-attributes="member: 9772"><p>I think the problem with that one is there are 2 grendel chambers. One uses a 7.62x39 bolt. There is .010 difference in headspace. But, if you look at any chamber drawing there is a tolerance of .010. So if you have a max chamber and most sizing dies are set to min plus a little tolerance stacking you get a sizing die that will push the shoulder back .014. I've seen it. You can tell on the initial firing of new brass how much it grows if you have the hornady tool. This is why you should always measure and push the shoulders a min amount.</p></blockquote><p></p>
[QUOTE="cajun, post: 2712382, member: 9772"] I think the problem with that one is there are 2 grendel chambers. One uses a 7.62x39 bolt. There is .010 difference in headspace. But, if you look at any chamber drawing there is a tolerance of .010. So if you have a max chamber and most sizing dies are set to min plus a little tolerance stacking you get a sizing die that will push the shoulder back .014. I’ve seen it. You can tell on the initial firing of new brass how much it grows if you have the hornady tool. This is why you should always measure and push the shoulders a min amount. [/QUOTE]
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The Basics, Starting Out
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