ok so I am a newbe,I was able to de prime several cases now all of a sudden my deprimer is pushing the pin up through the top I tried several cases still does it. I took the pin out rolled it across the table I dont see it being bent.
any suggestions?
I was able to complete a couple rounds with no issue.so here I am.

Lee?

Tighten the collet locking the pin in place, needs to be tighter than you would think!

yes sir it is a lee single stage challenger press.
I'm headed to the bench... thank you.

Tight like you need a cheater bar to make it stay.

It is an interesting design and I like them for automated machinery as indicators but works poorly as a main depriming die

Yea i see tight is right!

Are they military cases?
Can you see a crimp around primer?

no not military cases.
if they were would i have to do something different? these are 9mm lugar handgun cases.
I do intend to load rifle cases soon as I get the hang of reloading.I understand reloading rifle cases are a few more steps than pistol cases.

No, bottlenecked rifle cases require Fewer steps; go back and read your books. tighten your decapper nut, really tight. That is why Hornady has threads on theirs. But the Lee design works fine.

Not to mention handgun loading can be more dangerous than bottleneck loading

Be sure......100% sure that you only charge one time

A powder check die is a good idea to avoid double charges in pistol cases.

It sounds like an adjustment problem. You have probably screwed down too far and are bottoming.

Decapping pins are CHEAP. Throw away the present and install a new one. Then back off.

Slowly screw in the decapping pin until it decaps. DO NOT make any other adjustments that will bottom. Keep the rest of the die well above bottom.

Take two aspirins and call us in the morning.

Welcome and dooo be careful when loading pistol rounds. First read, read, and read some more. 9 mm brass can have primer crimps, I have hundreds of 9 mm WCC brass that has a primer crimp. IMO Lee dies are the strongest for removing crimped primers.

It could also be that the primers are Berdan type (2 flash holes) whereas the Boxer type has only one hole. Lee would not break when you accidently put a Berdan primed case in it. It would just push up the decapping rod. With other brands of decapping die, you would probably break the decapping pin.