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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning: Trying to turn full neck but seeing cutting high on shoulder (280 AI)
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<blockquote data-quote="Mike Matteson" data-source="post: 2367508" data-attributes="member: 101791"><p>I am looking almost the same thing, but I have set up with 21st Century to cut my necks. I am changing my 280AI neck to 6mm. I've been told by very informed person here at LRH, and backed up by the smith, to cut the neck to thickness before any firing of the cases and even before sizing the necks down to .243. The number that has came up with was .013 is magic number to cut your necks too. I had a reamer built to reduce the chamber size in the neck to only allow .002 expansion. (6mm-280AI) The mandrel that I gotten from 21st Ctry don't quick match the ID of the brass I have. 21st will build a mandrel for me, but I needed it yesterday. (Not a problem) The biggest problem is my smith is ready to chambering some cases and firing them. So I am going have the smith cut down the mandrel to fit the D.I. It doesn't stop there. The I.D. varies some for case to case. (I Purchased 500 case in one lot. Order in Feb and received in late Nov). I has me on the run. </p><p>Looking at your problem, My thinking you need to cut or trim the case to length first, then cut the necks to thickness to have better control. Which I will take that into account in working my case over. I had though about it, but hadn't check any case length yet. Sure going to do that now. Another step and a never ending story.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2367508, member: 101791"] I am looking almost the same thing, but I have set up with 21st Century to cut my necks. I am changing my 280AI neck to 6mm. I've been told by very informed person here at LRH, and backed up by the smith, to cut the neck to thickness before any firing of the cases and even before sizing the necks down to .243. The number that has came up with was .013 is magic number to cut your necks too. I had a reamer built to reduce the chamber size in the neck to only allow .002 expansion. (6mm-280AI) The mandrel that I gotten from 21st Ctry don't quick match the ID of the brass I have. 21st will build a mandrel for me, but I needed it yesterday. (Not a problem) The biggest problem is my smith is ready to chambering some cases and firing them. So I am going have the smith cut down the mandrel to fit the D.I. It doesn't stop there. The I.D. varies some for case to case. (I Purchased 500 case in one lot. Order in Feb and received in late Nov). I has me on the run. Looking at your problem, My thinking you need to cut or trim the case to length first, then cut the necks to thickness to have better control. Which I will take that into account in working my case over. I had though about it, but hadn't check any case length yet. Sure going to do that now. Another step and a never ending story. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning: Trying to turn full neck but seeing cutting high on shoulder (280 AI)
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