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Rifles, Reloading, Optics, Equipment
Reloading
Let's talk about the "dreaded donut"
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<blockquote data-quote="rscott5028" data-source="post: 500945" data-attributes="member: 24624"><p>That is a major flaw in the Hornady COAL gauge. I pondered that for a long time and just kept loading (thinking I was seating .010" off the lands) because they didn't point that flaw out in their instructions. </p><p> </p><p>Finally, I took some other measurements and cross-checked and compared and convinced myself that the gauge was reading ~.015" short of what it should. </p><p> </p><p>The bottom line is that the Hornady "modified case" is short by some amount. But, not all of them by the same amount. So, you get a good reading from the front shoulder to where the ogive meets the lands. But, the distance from the shoulder to the case head+headspace+bolt face varies. </p><p> </p><p>This may not always be true. But, it sounds like you ran into the same problem. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 500945, member: 24624"] That is a major flaw in the Hornady COAL gauge. I pondered that for a long time and just kept loading (thinking I was seating .010" off the lands) because they didn't point that flaw out in their instructions. Finally, I took some other measurements and cross-checked and compared and convinced myself that the gauge was reading ~.015" short of what it should. The bottom line is that the Hornady "modified case" is short by some amount. But, not all of them by the same amount. So, you get a good reading from the front shoulder to where the ogive meets the lands. But, the distance from the shoulder to the case head+headspace+bolt face varies. This may not always be true. But, it sounds like you ran into the same problem. -- richard [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Let's talk about the "dreaded donut"
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