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  #15  
Old 07-16-2017, 05:25 PM
coyotezapper coyotezapper is offline
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Join Date: May 2016
Location: Central Utah
Posts: 189
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My first experience with the RCBS Comp seating die was with a 7-08AI that I needed dies for, 14ish years ago. After not being able to find a seating die I called RCBS and they sent me a 7MM Comp die with an extended shell holder and I have been using it ever since. After reading the comment about run out above, I went and measured a couple of different cartridges loaded with these dies - 7-08AI and 330 Dakota and the run out was less than 1 thou for both so I am not sure what the deal was there with his run out problems. And as NCM said above the window is the best innovation yet and I am surprised that other manufacturers have not jumped on this idea.
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