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Tennessee Gun Owners Forums
Reloading
7mm PRC Optimal powder charge help... update... I give up!!!!
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<blockquote data-quote="jlanecr500" data-source="post: 5859003" data-attributes="member: 16430"><p>I ran the coal at SAMMI and again .100 longer. 68gr RL25 under the 175 ELDX is real close to the node, is at 60kpsi, and Calc velocity is 2861fps. You're not far off. With high bc projectiles, the only way to truly find the lands is for the bullet to not stick in the lands when using a mod case with comparator locked at measured max coal. Hold gun with barrel up. If it sticks, back off .010 at a time until.it doesn't. Then load your loads at your preferred distance off that length. In Other words, .020 off jam may be only .001 off the lands.</p></blockquote><p></p>
[QUOTE="jlanecr500, post: 5859003, member: 16430"] I ran the coal at SAMMI and again .100 longer. 68gr RL25 under the 175 ELDX is real close to the node, is at 60kpsi, and Calc velocity is 2861fps. You're not far off. With high bc projectiles, the only way to truly find the lands is for the bullet to not stick in the lands when using a mod case with comparator locked at measured max coal. Hold gun with barrel up. If it sticks, back off .010 at a time until.it doesn't. Then load your loads at your preferred distance off that length. In Other words, .020 off jam may be only .001 off the lands. [/QUOTE]
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Tennessee Gun Owners Forums
Reloading
7mm PRC Optimal powder charge help... update... I give up!!!!
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