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Take the decapping pin out, and then put various thicknesses of feeler gages between the case head and the shellholder. Start with 0.005," then try 0.010," and so on. Most likely will only have to do that the first time.
Sometimes when setting a shoulder back you need a little "more" sizing and I had to do that when reforming brass for my Weatherby. I assume the cases aren't too long (check that too). Good luck.
Sometimes when setting a shoulder back you need a little "more" sizing and I had to do that when reforming brass for my Weatherby. I assume the cases aren't too long (check that too). Good luck.
