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Rifles, Reloading, Optics, Equipment
Reloading
Fast twist = more pressure?
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<blockquote data-quote="MagnumManiac" data-source="post: 1453754" data-attributes="member: 10755"><p>I see that pressure/velocity is not effected by twist rate, BUT I do see a difference with the number of grooves and their width. My 3 groove match barrels in 300WM are faster than my 5R is at the same pressure.</p><p></p><p>I have a Remington and a Ruger in 25-06, the Ruger has skinny rifling, the Rem has the wide rifling. The groove number in each is the same which is 6.</p><p>The Ruger is faster than the Rem and shows pressure much later in the data, in fact it surpasses most loading manuals and the pressure trace shows the pressure is where it is supposed to be yet the velocity is higher.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1453754, member: 10755"] I see that pressure/velocity is not effected by twist rate, BUT I do see a difference with the number of grooves and their width. My 3 groove match barrels in 300WM are faster than my 5R is at the same pressure. I have a Remington and a Ruger in 25-06, the Ruger has skinny rifling, the Rem has the wide rifling. The groove number in each is the same which is 6. The Ruger is faster than the Rem and shows pressure much later in the data, in fact it surpasses most loading manuals and the pressure trace shows the pressure is where it is supposed to be yet the velocity is higher. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fast twist = more pressure?
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