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Long Range Hunting & Shooting
First Build - Looking for thoughts...
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<blockquote data-quote="codyadams" data-source="post: 1667295" data-attributes="member: 87243"><p>I'll give an example of what it takes to "overtwist". In my .260 AI, I have an 8 twist. I usually shoot 140+ bullets in it. However, I fireformed some Peterson brass, and for fun and somewhat curiosity, I got some 85 grain sierra varminters, figured the extra twist would help the explosive affect. I loaded with varget, sent them at a mild 3350 fps. They grouped like this: </p><p>[ATTACH=full]140266[/ATTACH]</p><p></p><p>With the lower two of the group being from me yanking the trigger on both shots. HOWEVER, if my barrel got anything past warm, I would get every couple rounds as flyers, like 20 feet off, due to them coming apart. </p><p></p><p>But as you see, they were still very accurate, with zero load developement, they would just come apart. This is the extreme you have to go to to have twist cause a significant issue.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1667295, member: 87243"] I'll give an example of what it takes to "overtwist". In my .260 AI, I have an 8 twist. I usually shoot 140+ bullets in it. However, I fireformed some Peterson brass, and for fun and somewhat curiosity, I got some 85 grain sierra varminters, figured the extra twist would help the explosive affect. I loaded with varget, sent them at a mild 3350 fps. They grouped like this: [ATTACH=full]140266[/ATTACH] With the lower two of the group being from me yanking the trigger on both shots. HOWEVER, if my barrel got anything past warm, I would get every couple rounds as flyers, like 20 feet off, due to them coming apart. But as you see, they were still very accurate, with zero load developement, they would just come apart. This is the extreme you have to go to to have twist cause a significant issue. [/QUOTE]
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