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Rifles, Reloading, Optics, Equipment
Reloading
Key to low ES on reloading
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<blockquote data-quote="Pdvdh" data-source="post: 1091884" data-attributes="member: 4191"><p>One thing that I've learned recently is that coating bullets with hexagonal boron nitride (HBN) will reduce ES. HBN coated bullets reduce the friction between the bullet and the bore. Folks shooting HBN coated bullets pretty much universally agee they experience lower ES from any load they shoot. I believe that the science/physics involved supports this benefit. A bullet with reduced bore friction will produce lower ES than that same bullet with greater bullet to bore friction. </p><p></p><p>This is a primary reason I've HBN coated all of my bullets this past winter. I haven't yet put in the time to document a reduction in ES from my rifles, but I have no doubt that the reduction in bullet to bore friction will reduce the range of chamber pressure for a given load/bullet, which will also reduce the range of velocity. </p><p></p><p>The reason I've gone to HBN coated bullets is that I've never enjoyed the pursuit of reduced ES/MV data. It can take a lot of time and effort, without any certainty of reaching any set goal. I believe the HBN coated bullets will reduce the ES of each of my loads in every single rifle. And the HBN coating process is reasonably pain free. So I went all-in.</p><p></p><p>The reason I mention the importance of the velocity measuring equipment in the prior post? I learned I had wasted a lot of time chasing reduced ES after I started shooting each bullet over duplicate/triplicate velocity measuring instruments.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1091884, member: 4191"] One thing that I've learned recently is that coating bullets with hexagonal boron nitride (HBN) will reduce ES. HBN coated bullets reduce the friction between the bullet and the bore. Folks shooting HBN coated bullets pretty much universally agee they experience lower ES from any load they shoot. I believe that the science/physics involved supports this benefit. A bullet with reduced bore friction will produce lower ES than that same bullet with greater bullet to bore friction. This is a primary reason I've HBN coated all of my bullets this past winter. I haven't yet put in the time to document a reduction in ES from my rifles, but I have no doubt that the reduction in bullet to bore friction will reduce the range of chamber pressure for a given load/bullet, which will also reduce the range of velocity. The reason I've gone to HBN coated bullets is that I've never enjoyed the pursuit of reduced ES/MV data. It can take a lot of time and effort, without any certainty of reaching any set goal. I believe the HBN coated bullets will reduce the ES of each of my loads in every single rifle. And the HBN coating process is reasonably pain free. So I went all-in. The reason I mention the importance of the velocity measuring equipment in the prior post? I learned I had wasted a lot of time chasing reduced ES after I started shooting each bullet over duplicate/triplicate velocity measuring instruments. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Key to low ES on reloading
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