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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity:How much ?
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<blockquote data-quote="Bart B" data-source="post: 362096" data-attributes="member: 5302"><p>Mikecr comments:All extractors push the case head sideways on the bolt face. At least the ones on Winchesters, Remington's, Garands, Paramounts, Springfields, Mausers, Rugers and others do. If they didn't, the case would slip out of the bolt face when the case is held in the bolt with the bolt removed from the rifle. Even with bolts with plunger ejectors removed, the case will be held against the bolt face edge opposite the extractor. I've sliped sized and new cases in a removed bolt's face, marked the back of the bullet with a dye, then chamberd them. All of 'em show scratches where opposite the ejector; evidence to me the ejector's pushing them there.</p><p></p><p>No way does the back end of the case rest on the chamber bottom from gravity as is oft times claimed. The only way the back end of a case will be perfectly centered in the chamber's back end is when the diameters of both are the same at the pressure ring area. Typically, the case is a thousandth or more smaller at that point.</p><p></p><p>What's a "proper" extractor's requirements? </p><p></p><p>I've removed plunger (button?) ejectors or cut their springs back too; good idea if you want to keep your brass clean.</p></blockquote><p></p>
[QUOTE="Bart B, post: 362096, member: 5302"] Mikecr comments:All extractors push the case head sideways on the bolt face. At least the ones on Winchesters, Remington's, Garands, Paramounts, Springfields, Mausers, Rugers and others do. If they didn't, the case would slip out of the bolt face when the case is held in the bolt with the bolt removed from the rifle. Even with bolts with plunger ejectors removed, the case will be held against the bolt face edge opposite the extractor. I've sliped sized and new cases in a removed bolt's face, marked the back of the bullet with a dye, then chamberd them. All of 'em show scratches where opposite the ejector; evidence to me the ejector's pushing them there. No way does the back end of the case rest on the chamber bottom from gravity as is oft times claimed. The only way the back end of a case will be perfectly centered in the chamber's back end is when the diameters of both are the same at the pressure ring area. Typically, the case is a thousandth or more smaller at that point. What's a "proper" extractor's requirements? I've removed plunger (button?) ejectors or cut their springs back too; good idea if you want to keep your brass clean. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity:How much ?
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