What did I do wrong
The most probable cause is mis-adjusted crimping/seating die. Back off seating and adjust crimp to just crimo to point of removing flare, then adjust
seating stem to achieve specified overall length.
Don't discard "wavy" case. Use bullet puller to remove bullet, powder, and then resize. Don't remove live primer, just skip primer setting step. Resizing
will eliminate wavy case, and allow you to salvage case
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