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Rifles, Reloading, Optics, Equipment
Reloading
Barnes 145 LRX and 168 LRX 7mm Dakota
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<blockquote data-quote="pods8" data-source="post: 1064644" data-attributes="member: 83233"><p>Yeah they recommend using the heavier data to start with, you can keep in mind you can potentially exceed the max charge a bit keeping in mind what the gun/brass/velocity are giving you in terms of feedback. I shoot the 145gr in 7-08 and had to do the same thing. </p><p></p><p>I rarely use the factory COAL data (I load longer) and wouldn't tend to pay much attention to it unless my gun was requiring a shorter loading, then I'd tread more carefully near max charge. I use the dowel method to check the bullet on the lands: dowel with a bushing set against the muzzle with the dowel against the bolt face and then pull the bolt and push a bullet up against the lands with another dowel. Measure the distance between the muzzle and bushing to figure out the COAL for that specific bullet. (I do then use a comparator to measure the ogive position on the bullet and do it for a few bullets to check, sometimes the ogive to tip varies but the base to ogive is typically consistent.)</p><p></p><p>The barnes certainly can vary in sweet spot, in one of my guns it likes .12" off the lands, in another .05" works well. I'd tend to check the range between .02-.15" once you've dialed in a powder charge you like.</p></blockquote><p></p>
[QUOTE="pods8, post: 1064644, member: 83233"] Yeah they recommend using the heavier data to start with, you can keep in mind you can potentially exceed the max charge a bit keeping in mind what the gun/brass/velocity are giving you in terms of feedback. I shoot the 145gr in 7-08 and had to do the same thing. I rarely use the factory COAL data (I load longer) and wouldn't tend to pay much attention to it unless my gun was requiring a shorter loading, then I'd tread more carefully near max charge. I use the dowel method to check the bullet on the lands: dowel with a bushing set against the muzzle with the dowel against the bolt face and then pull the bolt and push a bullet up against the lands with another dowel. Measure the distance between the muzzle and bushing to figure out the COAL for that specific bullet. (I do then use a comparator to measure the ogive position on the bullet and do it for a few bullets to check, sometimes the ogive to tip varies but the base to ogive is typically consistent.) The barnes certainly can vary in sweet spot, in one of my guns it likes .12" off the lands, in another .05" works well. I'd tend to check the range between .02-.15" once you've dialed in a powder charge you like. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Barnes 145 LRX and 168 LRX 7mm Dakota
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