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Message: <blockquote data-quote="PBramble" data-source="post: 3313373" data-attributes="member: 5778">Except that when jammed into the lands, the pressure spike is much higher to get the bullet moving. One way that was used to find the maximum safe load for a rifle was to work up loads at the maximum length and watch for pressure signs.OAL will change depending on the bullet too. A VLD will seat out much farther than a round nose bullet by design. COAL is usually used to figure if you can load them in the magazine. You should be measuring from the ogive to get consistently accurate measurements.</blockquote>