+2 on the VLD chamfer tool and ensuring the case neck tension isn't too high. The VLD chamfer tool alone solved every issue I had.223 lee crimp die is a collet crimp not a roll or taper and does not have a carbide ring. THAT is a pistol crimp die that has that. Don't crimp the bullet, you will ruin it. All that is needed is proper neck tension.
And you need the VLD type of chamfer tool.