I seem to go through binges of broken pins. Having 15 years of steady regular loading behind me w/1000s of gi cases preped I've broken plenty of pins. There was this batch of americ brass that a buddy brought me ,9mm,I broke 2 before I looked at the cases,every single flash hole was off center some at the edge of the pocket.
I even broke a pin in a set of LEE 308 dies. Sometimes you just get a bum part.
I've lost a couple of balls in cases too . With 30 cals I use my 32 cal expander ball to open the neck and shake the lost ball out ,then size the case again,I have to save all the brass I can. I started casting and now have a half a dozen expander rods I've turned on the drill press and threaded for the universal decapping die that are handy for opening a neck w/o going as far.
Are you lubing the case necks inside ? That'll pull that ball of in short order too.