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Rifles, Reloading, Optics, Equipment
Reloading
Powder Temp Stability Test – 8028XBR, Varget, H4350, RL19, RL26, N560
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<blockquote data-quote="Pdvdh" data-source="post: 1556262" data-attributes="member: 4191"><p>When the barrel is left warm, and the ammo and bullet are chilled, the steel bore remains warm temperature ID, while the bullet OD is reduced.</p><p>If bore and bullet diameters play a significant role, I think it would be much more pronounced by elevating the bore temperature thru repetitive shots fired. I do think I see this affect after chronographing a thousand and more bullet velocities over the years.</p><p></p><p>Which is why my temp sensitivity testing involves one shot at all temps tested. Then allow bore to return to ammo temperature before collecting another MV.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1556262, member: 4191"] When the barrel is left warm, and the ammo and bullet are chilled, the steel bore remains warm temperature ID, while the bullet OD is reduced. If bore and bullet diameters play a significant role, I think it would be much more pronounced by elevating the bore temperature thru repetitive shots fired. I do think I see this affect after chronographing a thousand and more bullet velocities over the years. Which is why my temp sensitivity testing involves one shot at all temps tested. Then allow bore to return to ammo temperature before collecting another MV. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powder Temp Stability Test – 8028XBR, Varget, H4350, RL19, RL26, N560
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