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Effects Of Cartridge Over All Length (COAL) And Cartridge Base To Ogive (CBTO) – Part 2
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<blockquote data-quote="MrBamboo" data-source="post: 1061239" data-attributes="member: 81426"><p>I have several Hornady cases for measuring the distance from the base to ogive and use a comparator nut with caliper to get the distance. I thought this "worked" for some time until on one rifle the reloaded cartridges when inserted into the chamber made it hard to close the bolt. I then withdrew the unfired cartridge and fount that it was being jammed into the lands even though the Hornady measurement was "Good."</p><p></p><p>After some thought and going back to using COLA that I have been using since 1976. I realized that to correct this, the Hornady cartridge should be put into you action, and close the bolt to form it to your length, kind of like resizing the shoulder. Because their round is longer from the shoulder to the base which gives an inaccurate reading. </p><p></p><p>I am glad this reloading article did show some of these issues and gave another way to measure your cartridge. </p><p></p><p>Paul</p></blockquote><p></p>
[QUOTE="MrBamboo, post: 1061239, member: 81426"] I have several Hornady cases for measuring the distance from the base to ogive and use a comparator nut with caliper to get the distance. I thought this "worked" for some time until on one rifle the reloaded cartridges when inserted into the chamber made it hard to close the bolt. I then withdrew the unfired cartridge and fount that it was being jammed into the lands even though the Hornady measurement was "Good." After some thought and going back to using COLA that I have been using since 1976. I realized that to correct this, the Hornady cartridge should be put into you action, and close the bolt to form it to your length, kind of like resizing the shoulder. Because their round is longer from the shoulder to the base which gives an inaccurate reading. I am glad this reloading article did show some of these issues and gave another way to measure your cartridge. Paul [/QUOTE]
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Effects Of Cartridge Over All Length (COAL) And Cartridge Base To Ogive (CBTO) – Part 2
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