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Rifles, Reloading, Optics, Equipment
Reloading
COAL using CBTO from Hornady OAL gauge significantly shorter than book COAL?
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<blockquote data-quote="FireFlyFishing" data-source="post: 3070817" data-attributes="member: 127412"><p>So, it's as easy as [USER=14204]@FEENIX[/USER]'s second video from Brownells. The key is having the bullet comparator tool coupled with OAL tool. I like to do five different bullets and take the avg of all the measurements. If I have a measurement way different than the other four I'll remeasure that bullet in the OAL tool. 99% of the time you're within .001-.002". I usually seat 0.020" deeper than my "jam" measurement I got from the OAL tool. </p><p></p><p>The load books typically will give you the SAAMI spec COAL. This is what factory ammo seating depth to chamber in all SAAMI spec'd chambers.</p><p></p><p>Edit: The exception is lathe turned bullets. You can do COAL for your final measurement.</p></blockquote><p></p>
[QUOTE="FireFlyFishing, post: 3070817, member: 127412"] So, it's as easy as [USER=14204]@FEENIX[/USER]'s second video from Brownells. The key is having the bullet comparator tool coupled with OAL tool. I like to do five different bullets and take the avg of all the measurements. If I have a measurement way different than the other four I'll remeasure that bullet in the OAL tool. 99% of the time you're within .001-.002". I usually seat 0.020" deeper than my "jam" measurement I got from the OAL tool. The load books typically will give you the SAAMI spec COAL. This is what factory ammo seating depth to chamber in all SAAMI spec'd chambers. Edit: The exception is lathe turned bullets. You can do COAL for your final measurement. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
COAL using CBTO from Hornady OAL gauge significantly shorter than book COAL?
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