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Old June 16, 2011, 07:08 PM   #2
IllinoisCoyoteHunter
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Join Date: December 23, 2008
Location: Southern Illinois
Posts: 1,527
OK, first off you want to flare the case mouth JUST enough for the base of the bullet to fit in. Too much flare will overwork the brass and lead to split necks.

If you don't have your seating die set up properly you may be applying too much crimp and buckling the cases.
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