They need to be skived, not much burr but enough it would hamper wad seating.
New 3 1/2 10 G down to 2 7/8 crimp fine. Getting ready to run another 100 Federal 10s. I would assume any gauge new un crimped hull would do as well.
Most cutting has been the entire fold off fired 2 7/8 inch 12 16 & 20 to make short hulls for roll crimping, I don't known well a fired 2 7/8 would do cut back to 2 1/2 then fold crimped. Cut would fall mid way old crimp. Would it crimp again possibly, indexed on the hulls rim length would be right.
William
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