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Rifles, Reloading, Optics, Equipment
Gunsmithing
Sticky bolt on hand loads
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<blockquote data-quote="Canadian Bushman" data-source="post: 916234" data-attributes="member: 41122"><p>A datum is the place a mesurment is toleranced from. Concerning headspace its the head of the case or the boltface. </p><p></p><p>A fired case isnt always the size of the chamber. It typically is about .001 - .002 inch smaller than the chamber because of the elastic properties described by clark. Unless it is acted upon by high pressures deforming it permanently, which is more common with magnums. </p><p></p><p>Some folks like fl dies because it assures a case will feed and chamber easily and some people also get better accuracy with loads in cases that have been bumped among many other reasons. There is actually a really good thread on this subject in here somewhere. </p><p></p><p><a href="http://www.longrangehunting.com/forums/f28/neck-size-full-length-size-50053/" target="_blank">http://www.longrangehunting.com/forums/f28/neck-size-full-length-size-50053/</a></p></blockquote><p></p>
[QUOTE="Canadian Bushman, post: 916234, member: 41122"] A datum is the place a mesurment is toleranced from. Concerning headspace its the head of the case or the boltface. A fired case isnt always the size of the chamber. It typically is about .001 - .002 inch smaller than the chamber because of the elastic properties described by clark. Unless it is acted upon by high pressures deforming it permanently, which is more common with magnums. Some folks like fl dies because it assures a case will feed and chamber easily and some people also get better accuracy with loads in cases that have been bumped among many other reasons. There is actually a really good thread on this subject in here somewhere. [url]http://www.longrangehunting.com/forums/f28/neck-size-full-length-size-50053/[/url] [/QUOTE]
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Sticky bolt on hand loads
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