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Rifles, Reloading, Optics, Equipment
Gunsmithing
7mm question/problem
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<blockquote data-quote="shortgrass" data-source="post: 1300792" data-attributes="member: 24284"><p>Could be that polygonal rifling. I see NO reason to venture away from 5R or conventional rifling. 7mm deserves a 1-8.5 or 1-9 twist. What it says on a box of bullets, concerning twist, isn't 'set in stone',,, it's a 'suggestion' or guidance. The combination of 1-10 twist and poly rifling could be what's giving you 'fits'. I don't know how a 'gunsmith' uses the wrong caliber barrel, but anything is possible these days.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1300792, member: 24284"] Could be that polygonal rifling. I see NO reason to venture away from 5R or conventional rifling. 7mm deserves a 1-8.5 or 1-9 twist. What it says on a box of bullets, concerning twist, isn't 'set in stone',,, it's a 'suggestion' or guidance. The combination of 1-10 twist and poly rifling could be what's giving you 'fits'. I don't know how a 'gunsmith' uses the wrong caliber barrel, but anything is possible these days. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
7mm question/problem
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