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Rifles, Reloading, Optics, Equipment
Reloading
Not the first time... 7mm Rem Mag - issues with ELD-X 175gr.
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<blockquote data-quote="coyotezapper" data-source="post: 1693776" data-attributes="member: 20438"><p>You obviously have a chronograph so why not just do normal load work up in 1/2 grain increments. Your methodology is too erratic IMO. 68-70 grain window is not a wide enough window to work in. Start at 64 and go up in 1/2 grain increments logging your velocity. What you want to see is the velocity flatten out, meaning that there is minimal velocity increase between two charges. Once you find this flat spot load to the middle of it and then do seating depth testing. Its that simple. MRP2 is a good powder choice for this cartridge / bullet combo and will shoot very well if done right. 2900 fps should be where it shoots well.</p><p></p><p>Another thing to consider is your twist rate. 1-8.6 may be a little slow depending on your altitude. Run it in the Berger calculator and see.</p><p></p><p>I have never had an issue with any ELDX bullet not shooting well and to often the bullet is blamed when there are other things affecting the results.</p></blockquote><p></p>
[QUOTE="coyotezapper, post: 1693776, member: 20438"] You obviously have a chronograph so why not just do normal load work up in 1/2 grain increments. Your methodology is too erratic IMO. 68-70 grain window is not a wide enough window to work in. Start at 64 and go up in 1/2 grain increments logging your velocity. What you want to see is the velocity flatten out, meaning that there is minimal velocity increase between two charges. Once you find this flat spot load to the middle of it and then do seating depth testing. Its that simple. MRP2 is a good powder choice for this cartridge / bullet combo and will shoot very well if done right. 2900 fps should be where it shoots well. Another thing to consider is your twist rate. 1-8.6 may be a little slow depending on your altitude. Run it in the Berger calculator and see. I have never had an issue with any ELDX bullet not shooting well and to often the bullet is blamed when there are other things affecting the results. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Not the first time... 7mm Rem Mag - issues with ELD-X 175gr.
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