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Long Range Hunting & Shooting
Why do some rifles shoot better dirty?
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<blockquote data-quote="Marine sniper" data-source="post: 237101" data-attributes="member: 4768"><p>We did some testing of this back in 93-94 at Sniper School. Our primary consideration was to try to figure out a way to predict cold bore shots.</p><p></p><p>In general a higher quality barrel will produce a more predictable cold bore shot from a clean barrel. If you played around with how much you cleaned the barrel (just remove powder residue, remove all copper, or remove most of the copper, etc) you could find a "condition" that would produce a repeatable cold bore shot.</p><p></p><p>Remember lower quality barrels are usually rougher inside the bore than a Shilen or Hart. It takes a few shots for these imperfections to fill with copper, there by creating a condition. Also remember as this is happening the friction coefficient of the bore is changing.</p></blockquote><p></p>
[QUOTE="Marine sniper, post: 237101, member: 4768"] We did some testing of this back in 93-94 at Sniper School. Our primary consideration was to try to figure out a way to predict cold bore shots. In general a higher quality barrel will produce a more predictable cold bore shot from a clean barrel. If you played around with how much you cleaned the barrel (just remove powder residue, remove all copper, or remove most of the copper, etc) you could find a "condition" that would produce a repeatable cold bore shot. Remember lower quality barrels are usually rougher inside the bore than a Shilen or Hart. It takes a few shots for these imperfections to fill with copper, there by creating a condition. Also remember as this is happening the friction coefficient of the bore is changing. [/QUOTE]
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Why do some rifles shoot better dirty?
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