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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
barrel lengths per cartridge decisions
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<blockquote data-quote="cabelasken" data-source="post: 3058284" data-attributes="member: 117774"><p>I select barrel length based on the diameter of bullet and the case volume of the cartridge. In this way I figure I figured out the optimum column length of powder that can be burned before it leaves the barrel. From my calculations, I determined the 30-06 optimum barrel length was between 21 and 22 inches. The 7 MM RM with its bigger case volumn and smaller diameter bullet was 25 inches. Of course powders have different burn rates and the length should be adjusted accordingly. Also, heavier bullets becasue of their added bearing against the barrel will burn a little more effectively than a light bullet in a shorter barrel and velocity loss will be reduced somewhat. Just my thoughts</p></blockquote><p></p>
[QUOTE="cabelasken, post: 3058284, member: 117774"] I select barrel length based on the diameter of bullet and the case volume of the cartridge. In this way I figure I figured out the optimum column length of powder that can be burned before it leaves the barrel. From my calculations, I determined the 30-06 optimum barrel length was between 21 and 22 inches. The 7 MM RM with its bigger case volumn and smaller diameter bullet was 25 inches. Of course powders have different burn rates and the length should be adjusted accordingly. Also, heavier bullets becasue of their added bearing against the barrel will burn a little more effectively than a light bullet in a shorter barrel and velocity loss will be reduced somewhat. Just my thoughts [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
barrel lengths per cartridge decisions
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