I understand pretty well I think about resizing brass that has been fired. But, what about new brass? Anything that needs to be done to it or maximum accuracy, or because of the fact that it may be smaller in some dimension than I want (i.e., headspace), should I just fire a shot for the purposes of blowing out the case so I can it resized just to the dimension I want? I know benchrest shooters do this, but I am not quite that finicky.
I thought I would just run all the new cases through the full length resizing die to set the shoulder back to what I need (if they need any setback at all - doubtful), and use the expander to expand the neck for consistent bullet tension and iron out any dents.
OR
Use a mandrel to size the interior neck dimension without any of the potential disadvantages of an expander being pulled through the neck (increased neck runout). I have found that even with a carbide expander, it does cause increased neck runout (I am using Redding dies).
Recommendations? This is Winchester 223 brass.
- Phil
I thought I would just run all the new cases through the full length resizing die to set the shoulder back to what I need (if they need any setback at all - doubtful), and use the expander to expand the neck for consistent bullet tension and iron out any dents.
OR
Use a mandrel to size the interior neck dimension without any of the potential disadvantages of an expander being pulled through the neck (increased neck runout). I have found that even with a carbide expander, it does cause increased neck runout (I am using Redding dies).
Recommendations? This is Winchester 223 brass.
- Phil

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