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The Range
Ammo & Reloading
Casting issues
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<blockquote data-quote="Ahall" data-source="post: 4235380" data-attributes="member: 49426"><p>Mold blocks should float on there mount pins so the alignment pins can find alignment </p><p></p><p>crud and lead in the joint between the blocks and handles can bind the joint and prevent proper closure</p><p></p><p></p><p></p><p>Casting with the sprue plate against the spout increases the internal pressure on the mold when compared to casting with an air gap. I have see bullets grow whiskers out the air vents when the mold was pressed to the pot. </p><p></p><p></p><p>Lee molds are aluminum </p><p>It expands fastest than steel so if the tolerances are off the steel alignment pins can shift in use but feal solid when the molds cool. </p><p>Most Lee molds have at least one steel alignment pin</p><p></p><p></p><p>Hold the block up to a bright light and see if you see any gaps. If you see a gap you can find the high spot and shave it off</p></blockquote><p></p>
[QUOTE="Ahall, post: 4235380, member: 49426"] Mold blocks should float on there mount pins so the alignment pins can find alignment crud and lead in the joint between the blocks and handles can bind the joint and prevent proper closure Casting with the sprue plate against the spout increases the internal pressure on the mold when compared to casting with an air gap. I have see bullets grow whiskers out the air vents when the mold was pressed to the pot. Lee molds are aluminum It expands fastest than steel so if the tolerances are off the steel alignment pins can shift in use but feal solid when the molds cool. Most Lee molds have at least one steel alignment pin Hold the block up to a bright light and see if you see any gaps. If you see a gap you can find the high spot and shave it off [/QUOTE]
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