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Rifles, Reloading, Optics, Equipment
Reloading
223 improved fire forming issues
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<blockquote data-quote="LRSickle" data-source="post: 436432" data-attributes="member: 18167"><p>It just doesn't seem right. I may be wrong so we might both be learning something. When ignition occurs your case expands and grips the sides of your chamber first, followed by your case expanding length-wise. If your case is pressed back against your bolt in the first place, your bolt will support the base of cartridge and keep your web from stretching and thinning out. The only way your case can stretch is forward, which is what you want since your fireforming. I'm pretty sure your unfired cases are smaller that your go-guage which might account for the headspace problem when your fireforming.</p><p>As far as deforming your case goes, just tap on the side to make it slightly out-of-round. Just enough so the friction of the case against the chamber walls will force the case back against the bolthead. Just tap the sides lightly with a screwdriver handle.</p><p>If your fireforming with reduced loads, I don't think you'll have to worry about high chamber pressures.</p></blockquote><p></p>
[QUOTE="LRSickle, post: 436432, member: 18167"] It just doesn't seem right. I may be wrong so we might both be learning something. When ignition occurs your case expands and grips the sides of your chamber first, followed by your case expanding length-wise. If your case is pressed back against your bolt in the first place, your bolt will support the base of cartridge and keep your web from stretching and thinning out. The only way your case can stretch is forward, which is what you want since your fireforming. I'm pretty sure your unfired cases are smaller that your go-guage which might account for the headspace problem when your fireforming. As far as deforming your case goes, just tap on the side to make it slightly out-of-round. Just enough so the friction of the case against the chamber walls will force the case back against the bolthead. Just tap the sides lightly with a screwdriver handle. If your fireforming with reduced loads, I don't think you'll have to worry about high chamber pressures. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
223 improved fire forming issues
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