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Rifles, Reloading, Optics, Equipment
Reloading
Case mouth stretch in fired 222 brass
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<blockquote data-quote="MagnumManiac" data-source="post: 1632773" data-attributes="member: 10755"><p>There needs to be .003" minimum clearance between a sized/loaded rounds neck and the chamber.</p><p>The maximum should be .006", but have seen factory chambers larger.</p><p>A tight neck, say .002" MAY increase pressure beyond normal 'tracking', this occurred to me in several instances of 'turned-neck' chambers.</p><p>I no longer order 'turned-neck' chambers and order my neck clearance AFTER buying a batch of brass for that barrel with .003" clearance. My best barrel has a neck clearance of .004", just as an example.</p><p>Pressure spikes are not conducive to tuning a load.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1632773, member: 10755"] There needs to be .003" minimum clearance between a sized/loaded rounds neck and the chamber. The maximum should be .006", but have seen factory chambers larger. A tight neck, say .002" MAY increase pressure beyond normal 'tracking', this occurred to me in several instances of 'turned-neck' chambers. I no longer order 'turned-neck' chambers and order my neck clearance AFTER buying a batch of brass for that barrel with .003" clearance. My best barrel has a neck clearance of .004", just as an example. Pressure spikes are not conducive to tuning a load. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Case mouth stretch in fired 222 brass
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