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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Elasticity of chamber, hot loads and sticky bolt
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<blockquote data-quote="Greyfox" data-source="post: 894231" data-attributes="member: 10291"><p>I think besides an overly hot load causing a sticky bolt, my experience has been the there a a few factors that can cause this, even at standard pressure. </p><p>-The chamber/headspace of a particular rifle being too long, short, or not concentric.</p><p>-Fast burning powders causing the case to take a disproportionate amount of pressure. </p><p>-Insufficient resizing of the fired case. Adjust or modify the dye.</p><p>It's pretty easy to determine the rifle's headspace and chamber concentricity. I have also reduced sticky bolt effects just by changing brass as they do vary in thickness and composition. When neck sizing only, the cases will eventually have to have the shoulder and/or body resized, and this will be indicated by a sticky bolt . I also have found that while ejector marks or flat/cratered primers are an indicator of high pressure and reason for checking it out, it could very well just be the particular bolt face or stiff ejector button causing this, even at acceptable pressures. IMO</p></blockquote><p></p>
[QUOTE="Greyfox, post: 894231, member: 10291"] I think besides an overly hot load causing a sticky bolt, my experience has been the there a a few factors that can cause this, even at standard pressure. -The chamber/headspace of a particular rifle being too long, short, or not concentric. -Fast burning powders causing the case to take a disproportionate amount of pressure. -Insufficient resizing of the fired case. Adjust or modify the dye. It's pretty easy to determine the rifle's headspace and chamber concentricity. I have also reduced sticky bolt effects just by changing brass as they do vary in thickness and composition. When neck sizing only, the cases will eventually have to have the shoulder and/or body resized, and this will be indicated by a sticky bolt . I also have found that while ejector marks or flat/cratered primers are an indicator of high pressure and reason for checking it out, it could very well just be the particular bolt face or stiff ejector button causing this, even at acceptable pressures. IMO [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Elasticity of chamber, hot loads and sticky bolt
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