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Rifles, Reloading, Optics, Equipment
Reloading
How much to turn necks?
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<blockquote data-quote="Alan Griffith" data-source="post: 113347" data-attributes="member: 4686"><p>Ok, just to soothe everyone's curiosity, especially mine, before work this morning, I went and took 3 rounds and loaded them up with 57.5 gr H4350, WLR primers and stuck the bullets into the lands .005". Temp about 65 degrees. The brass I used was in the .0016" to .002" neck thickness variation pile (16 cases). Not the worst of the bunch, but next to it. </p><p></p><p>Here is what happened.</p><p></p><p>Case 1 </p><p></p><p>.0015" to .0017" neck thickness variation. Loaded OD .338". Fired OD .341"</p><p></p><p>Case 2</p><p></p><p>.001425" to .001625". Loaded OD .337". Fired OD .341"</p><p></p><p>Case 3</p><p></p><p>.00155" to .00175". Loaded OD .337". Fired OD .341". </p><p></p><p>Seems to me, and I could be wrong, I'm getting, at most, .004" expansion. Actually, probably .005" because I'm getting .001" spring back after firing; probably! Right?</p><p></p><p>Would I be safe to surmise (that's my way of guessing) my chamber's neck is .342"?</p><p></p><p>Ok, now where to from here?</p><p></p><p>Big Al</p><p></p><p>PS. Isn't this Fun?!?!?! /ubbthreads/images/graemlins/grin.gif</p></blockquote><p></p>
[QUOTE="Alan Griffith, post: 113347, member: 4686"] Ok, just to soothe everyone’s curiosity, especially mine, before work this morning, I went and took 3 rounds and loaded them up with 57.5 gr H4350, WLR primers and stuck the bullets into the lands .005”. Temp about 65 degrees. The brass I used was in the .0016” to .002” neck thickness variation pile (16 cases). Not the worst of the bunch, but next to it. Here is what happened. Case 1 .0015” to .0017” neck thickness variation. Loaded OD .338”. Fired OD .341” Case 2 .001425” to .001625”. Loaded OD .337”. Fired OD .341” Case 3 .00155” to .00175”. Loaded OD .337”. Fired OD .341”. Seems to me, and I could be wrong, I’m getting, at most, .004” expansion. Actually, probably .005” because I’m getting .001” spring back after firing; probably! Right? Would I be safe to surmise (that’s my way of guessing) my chamber’s neck is .342”? Ok, now where to from here? Big Al PS. Isn't this Fun?!?!?! [img]/ubbthreads/images/graemlins/grin.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How much to turn necks?
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