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Rifles, Reloading, Optics, Equipment
Reloading
264 win mag headspace question/problem
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<blockquote data-quote="RegionRat" data-source="post: 2652319" data-attributes="member: 57231"><p>The Redding incremental shell holder set does the opposite of this.</p><p></p><p>Redding's shell holders are taller by the amount stamped on them in thousandths of an inch, so if the standard shell holder is 0.125", then the +2 shell holder is 0.127", the +4 is 0.129" and so on.</p><p></p><p>Sanding a shell holder down presumably brings the 0.125" dimension down and allows the die to come closer to the base of the case head.</p><p></p><p>Also, keep in mind that lengths and diameters are weakly coupled by the geometry of the design, so if the diameters are the real problem, squishing down the die is a weak way to reduce the diameter. When a diameter is the problem in instances like this one, we either need the L.W. Collet Sizer to reduce the value above the belt, or we end up needing a custom die.</p><p></p><p>Larry passed away recently, but turned the company over to others about five or six years ago and they still produce his die in batches.</p><p></p><p>ETA: if it turns out to be the diameters, see if the gunsmith who cut that chamber is willing to correct it. If not, a chamber cast will help debug the issue of maybe needing a custom die. Usually a benefit to owning a Go-Gage. You can reference you comparators to the Go-Gage and see if the shoulder datum length of the chamber or the ammo is a problem.</p></blockquote><p></p>
[QUOTE="RegionRat, post: 2652319, member: 57231"] The Redding incremental shell holder set does the opposite of this. Redding's shell holders are taller by the amount stamped on them in thousandths of an inch, so if the standard shell holder is 0.125", then the +2 shell holder is 0.127", the +4 is 0.129" and so on. Sanding a shell holder down presumably brings the 0.125" dimension down and allows the die to come closer to the base of the case head. Also, keep in mind that lengths and diameters are weakly coupled by the geometry of the design, so if the diameters are the real problem, squishing down the die is a weak way to reduce the diameter. When a diameter is the problem in instances like this one, we either need the L.W. Collet Sizer to reduce the value above the belt, or we end up needing a custom die. Larry passed away recently, but turned the company over to others about five or six years ago and they still produce his die in batches. ETA: if it turns out to be the diameters, see if the gunsmith who cut that chamber is willing to correct it. If not, a chamber cast will help debug the issue of maybe needing a custom die. Usually a benefit to owning a Go-Gage. You can reference you comparators to the Go-Gage and see if the shoulder datum length of the chamber or the ammo is a problem. [/QUOTE]
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264 win mag headspace question/problem
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