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ADJUSTING NECK TENSION

@JEFFPPC on those bbls, did you gage them or slug them?

What is your guess on those two bbls that were mentioned above? Do you think it was bbl gage or something else that moved you down a grain?
 
With different sized expansion mandrels like the ones 21st Century makes for each caliber you can make fine adjustments. They also help with reducing runout. I like seating with a hydraulic gauged press to check consistency. I believe that is most important.
 

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