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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Case stretch
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<blockquote data-quote="shortgrass" data-source="post: 414098" data-attributes="member: 24284"><p>Hey,,, I'm just full of little tidbits of obscure info. That .006" tolerance must be the limitation the brass as it is still the limiting component for the pressures that are generated as the propellant burns. The higher the pressure the tighter the working tolerance. We count on the brass case to stretch and then contract some, so it can be extracted from the chamber. By design and by the nature of brass. I would suspect case stretching, like the OP asked about, comes from high pressure cartridges or 'generous' chambers or both. .005" 'growth' wouldn't bother me too much, but, when I resized those cases I'd only re-size enough to ensure reliable function in my rifle. That will help limit 'growth' and/or hard brass for future reloadings.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 414098, member: 24284"] Hey,,, I'm just full of little tidbits of obscure info. That .006" tolerance must be the limitation the brass as it is still the limiting component for the pressures that are generated as the propellant burns. The higher the pressure the tighter the working tolerance. We count on the brass case to stretch and then contract some, so it can be extracted from the chamber. By design and by the nature of brass. I would suspect case stretching, like the OP asked about, comes from high pressure cartridges or 'generous' chambers or both. .005" 'growth' wouldn't bother me too much, but, when I resized those cases I'd only re-size enough to ensure reliable function in my rifle. That will help limit 'growth' and/or hard brass for future reloadings. [/QUOTE]
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Case stretch
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