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Rifles, Reloading, Optics, Equipment
Reloading
7mm Ultra Loads?
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<blockquote data-quote="41mag" data-source="post: 166491" data-attributes="member: 3804"><p><span style="color: Blue">I hope someone else can explain the reason the 175 grain in a 7 won't beat a 200 in a 30.</span></p><p></p><p>Well not that I am an expert on it, but I would say expansion ratio & bearing surface. </p><p></p><p>Depending on the bearing surface you will hit higher pressure signs in the smaller diameter longer bullet than you will in the fatter bullet with less surface. </p><p></p><p>Also even though not that much actual difference in bore size the .284 is still smaller than the .308 and when getting into top ressure loads this will make a difference in burn rates and pressure peaks over the distance of the entire barrel length. </p><p></p><p>Just my view of it.</p></blockquote><p></p>
[QUOTE="41mag, post: 166491, member: 3804"] [COLOR="Blue"]I hope someone else can explain the reason the 175 grain in a 7 won't beat a 200 in a 30.[/COLOR] Well not that I am an expert on it, but I would say expansion ratio & bearing surface. Depending on the bearing surface you will hit higher pressure signs in the smaller diameter longer bullet than you will in the fatter bullet with less surface. Also even though not that much actual difference in bore size the .284 is still smaller than the .308 and when getting into top ressure loads this will make a difference in burn rates and pressure peaks over the distance of the entire barrel length. Just my view of it. [/QUOTE]
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Reloading
7mm Ultra Loads?
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