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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel fluting post build affect accuracy?
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<blockquote data-quote="Richard338" data-source="post: 70135" data-attributes="member: 1537"><p>The thermal expansion coefficient for steel in the temp range of 20C-100C is from (1x10^-5)/C to (2x10^-5)/C. Longtooths post says 2x10^-5/C for 416 steel.</p><p>This is a fractional change. So if you went from 20-100C the fractional change is 0.0016.</p><p>This means that a 30" barrel lengthens by 0.048 inches. If the barrel is 1" thick, it will become 0.0016 inches thicker.</p><p>A .2640 bore will open up by 0.0004 inches (less than 1 thou).</p></blockquote><p></p>
[QUOTE="Richard338, post: 70135, member: 1537"] The thermal expansion coefficient for steel in the temp range of 20C-100C is from (1x10^-5)/C to (2x10^-5)/C. Longtooths post says 2x10^-5/C for 416 steel. This is a fractional change. So if you went from 20-100C the fractional change is 0.0016. This means that a 30" barrel lengthens by 0.048 inches. If the barrel is 1" thick, it will become 0.0016 inches thicker. A .2640 bore will open up by 0.0004 inches (less than 1 thou). [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel fluting post build affect accuracy?
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