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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Reloading Thread
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<blockquote data-quote="Lefty7mmstw" data-source="post: 800660" data-attributes="member: 48043"><p>When they say 8" twist minimum, they want 8" or faster twist... Say 7.5 or 7" twist in this case. Most 1 in 9 barrels will be marginal if they are asking for the 8" twist, especially at lower altitude. Both bullet length AND weight are variables here. My ar shoots some 75-77 grain pills well at 9" twist, but some would be needing an 8" twist, especially the poly tipped ones.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 800660, member: 48043"] When they say 8" twist minimum, they want 8" or faster twist... Say 7.5 or 7" twist in this case. Most 1 in 9 barrels will be marginal if they are asking for the 8" twist, especially at lower altitude. Both bullet length AND weight are variables here. My ar shoots some 75-77 grain pills well at 9" twist, but some would be needing an 8" twist, especially the poly tipped ones. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Reloading Thread
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