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Rifles, Reloading, Optics, Equipment
Reloading
Chambered Round Alignment to Bore; Neck Sized vs Full Length Sized
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<blockquote data-quote="BountyHunter" data-source="post: 645457" data-attributes="member: 12"><p>No one can measure "one" thing to say this is the most important thing. It is a combination of the parts.</p><p> </p><p>The point/inference about the alignment being the key is misleading IMO for several reasons.</p><p> </p><p>Cases do not suspend in air inside the chamber. They are held front and at the rear by the bolt and extractor regardless of what sizing method. Very few people realize and talk about the part the bolt plays in centering the round.</p><p> </p><p>The issue of case sizing has more to do with uniformity of the case, reliability of loading and extraction, and reliable neck tension which will open/close groups. We can argue the FL vs NS repeatedly and will I am sure for accuracy, but to me it is reliability of case in and out of the chamber without being tight or hard extraction and uniform case dimensions.</p><p> </p><p>Again, there is a growing awareness that super tight necks in the LR community are not necessary. It used to be you had to have no more than .015 total clearance and now many top shooters are going with as much as .03-.04 total clearance as long as the body is uniform, the necks are annealed and you have a uniform tension (which is the hardest to control).</p><p> </p><p>BTW I knew John Hoover what John was doing with the neck tension 4-5 yrs before the article. As I said, it was being used by some before being written up for all. By using a NS die for the final step, it always leaves a little ridge to help center the case except for the Neil Jones and Warner dies which are different and go all the way down on the shoulders.</p></blockquote><p></p>
[QUOTE="BountyHunter, post: 645457, member: 12"] No one can measure "one" thing to say this is the most important thing. It is a combination of the parts. The point/inference about the alignment being the key is misleading IMO for several reasons. Cases do not suspend in air inside the chamber. They are held front and at the rear by the bolt and extractor regardless of what sizing method. Very few people realize and talk about the part the bolt plays in centering the round. The issue of case sizing has more to do with uniformity of the case, reliability of loading and extraction, and reliable neck tension which will open/close groups. We can argue the FL vs NS repeatedly and will I am sure for accuracy, but to me it is reliability of case in and out of the chamber without being tight or hard extraction and uniform case dimensions. Again, there is a growing awareness that super tight necks in the LR community are not necessary. It used to be you had to have no more than .015 total clearance and now many top shooters are going with as much as .03-.04 total clearance as long as the body is uniform, the necks are annealed and you have a uniform tension (which is the hardest to control). BTW I knew John Hoover what John was doing with the neck tension 4-5 yrs before the article. As I said, it was being used by some before being written up for all. By using a NS die for the final step, it always leaves a little ridge to help center the case except for the Neil Jones and Warner dies which are different and go all the way down on the shoulders. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Chambered Round Alignment to Bore; Neck Sized vs Full Length Sized
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