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Rifles, Reloading, Optics, Equipment
Equipment Discussions
New Borden Bigfoot action review and info
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<blockquote data-quote="MagnumManiac" data-source="post: 2230058" data-attributes="member: 10755"><p>It is stable in my current 9" twist.</p><p>According to Litz's calculator it is right at 1.5. I didn't want to spin it fast.</p><p>We tried it in a 10" twisted Edge and it didn't stabilise at all.</p><p>I coat these in HBN and they are turned with relief grooves like a Barnes or Hammer.</p><p>I could still go 8" twist if the plan is going to have them running at about 3100fps or less. I am yet to see the velocity specs on the 33XC, but mine will do 3200fps with the coated bullets, but it has gone faster than this with a 300g OTM that was also coated.</p><p>Brass doesn't like it much though.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2230058, member: 10755"] It is stable in my current 9” twist. According to Litz’s calculator it is right at 1.5. I didn’t want to spin it fast. We tried it in a 10” twisted Edge and it didn’t stabilise at all. I coat these in HBN and they are turned with relief grooves like a Barnes or Hammer. I could still go 8” twist if the plan is going to have them running at about 3100fps or less. I am yet to see the velocity specs on the 33XC, but mine will do 3200fps with the coated bullets, but it has gone faster than this with a 300g OTM that was also coated. Brass doesn’t like it much though. Cheers. [/QUOTE]
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New Borden Bigfoot action review and info
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