The only time I had problems with 9mm shooting minute of barn was when I used plated rounds in my H&K. That gun just won't shoot anything but real jacketed bullets.
Another thing that could be doing it is your crimp. If your crimp is too heavy, you could be tearing into the jacket which can cause it to start falling apart as the bullet goes down the barrel. I kept cranking my seating die down and pulling the pullet each time. When the crimp dented the bullet, I backed off and left it there and everything works fine.
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There are two types of men: those with guns, and those at their mercy.
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