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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hexagonal Boron Nitride
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<blockquote data-quote="royinidaho" data-source="post: 1212906" data-attributes="member: 2011"><p>I have been recently testing some monolithic copper bullets and comparing HBN and not HBN'd.</p><p></p><p>The jury is still out on this observation but I "think" I notice a velocity difference due to the quality or depth of the HBN coating.</p><p></p><p>With a long tumbling duration ES is say 5 and MV is 3128.</p><p></p><p>With a very short tumble duration ES is again say 5 with a MV of 3118.</p><p></p><p>The pattern is very consistent.</p><p></p><p>This is with 400 class bullets.</p><p></p><p>It's quite nifty that components, powder and technology is available to notice things such as this.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 1212906, member: 2011"] I have been recently testing some monolithic copper bullets and comparing HBN and not HBN'd. The jury is still out on this observation but I "think" I notice a velocity difference due to the quality or depth of the HBN coating. With a long tumbling duration ES is say 5 and MV is 3128. With a very short tumble duration ES is again say 5 with a MV of 3118. The pattern is very consistent. This is with 400 class bullets. It's quite nifty that components, powder and technology is available to notice things such as this. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Hexagonal Boron Nitride
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