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Rifles, Reloading, Optics, Equipment
Reloading
243 Win Ackley Improved primers.
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<blockquote data-quote="Seabeeken" data-source="post: 2458689" data-attributes="member: 68015"><p>When headspacing ackley improved rounds you should use Manson headspace gauges as they are made to have the .004" crush fit. H-450 is a slow burning powder and may not be building enough pressure. Ackley recommended a "snappy" load. As already said, the case gripped the chamber and expanded and didnt set back against the bolt face after being driven forward by the firing pin. Had it done so, it likely would have had a case head separation which may still happen on the next firing. I learned this while forming 250ai cases.</p></blockquote><p></p>
[QUOTE="Seabeeken, post: 2458689, member: 68015"] When headspacing ackley improved rounds you should use Manson headspace gauges as they are made to have the .004" crush fit. H-450 is a slow burning powder and may not be building enough pressure. Ackley recommended a "snappy" load. As already said, the case gripped the chamber and expanded and didnt set back against the bolt face after being driven forward by the firing pin. Had it done so, it likely would have had a case head separation which may still happen on the next firing. I learned this while forming 250ai cases. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
243 Win Ackley Improved primers.
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