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Rifles, Reloading, Optics, Equipment
Reloading
Brass?
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<blockquote data-quote="Stammster" data-source="post: 2211701" data-attributes="member: 114381"><p>Hornady brass is typically lighter weight and more H2O capacity than others. Up to 20gr per case less (ie. 270) and 2-3 gr H2O more.</p><p>So yes, it does make a difference in velocity. My Hornady loads take +/- 2gr more of powder to achieve the same velocity. Many are therefore over book max charge value, but perfectly safe. In fact, I typically use book velocity, rather than load weight when doing load development (correcting as necessary for barrel length).</p><p></p><p>Hornady also has huge spread in case weight, like 10-11gr (I.e 270 Win 170-182 gr). However, H2O capacity is more consistent (<0.3 gr H2O spread over such a large range) - which I found quite suprising.</p></blockquote><p></p>
[QUOTE="Stammster, post: 2211701, member: 114381"] Hornady brass is typically lighter weight and more H2O capacity than others. Up to 20gr per case less (ie. 270) and 2-3 gr H2O more. So yes, it does make a difference in velocity. My Hornady loads take +/- 2gr more of powder to achieve the same velocity. Many are therefore over book max charge value, but perfectly safe. In fact, I typically use book velocity, rather than load weight when doing load development (correcting as necessary for barrel length). Hornady also has huge spread in case weight, like 10-11gr (I.e 270 Win 170-182 gr). However, H2O capacity is more consistent (<0.3 gr H2O spread over such a large range) - which I found quite suprising. [/QUOTE]
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